{"title":"Sharpstar Telescopes - High-Quality Refractors and Accessories.","description":"\u003ch2\u003eSharpStar Refractor Telescopes\u003c\/h2\u003e\u003cp\u003eSharpStar refractor telescopes deliver high optical performance for visual astronomy and astrophotography.\u003c\/p\u003e","products":[{"product_id":"sharpstar-76edph","title":"Sharpstar 76EDPH","description":"\u003ch3\u003eSharpstar 76EDPH: Advanced Optics for Astrophotography\u003c\/h3\u003e\n\u003cp\u003eThe Sharpstar 76EDPH is the second addition to the Sharpstar EDPH family. Known for its aesthetic appeal and compact design, it features a triplet air-spaced lens structure with ED (extra-low dispersion) glass, ensuring outstanding performance for both visual observation and astrophotography. This design effectively eliminates chromatic aberration, delivering detailed and high-contrast images.\u003c\/p\u003e\n\u003cp\u003eWith a 76mm aperture and a focal length of 418mm, the Sharpstar 76EDPH achieves a fast focal ratio of f\/5.5. Its compactness, with a tube length of only 332.9mm when the dew shield is contracted, makes it an ideal companion for travel. This telescope easily fits into travel bags and can be taken on planes, offering convenience for outdoor sky observation.\u003c\/p\u003e\n\u003cp\u003eThe Sharpstar 76EDPH’s precise optical and mechanical design ensures high performance. It also comes with a dedicated 2.5\" f\/4.5 full-frame reducer, elevating it among high-end, fast-focal-ratio astrographs.\u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":42269764255921,"sku":"76EDPH","price":865.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sharpstar-76edph-892755.jpg?v=1718480277"},{"product_id":"sharpstar-carbon-fibre-tripod-for-colour-carbon-mark-iii-harmonic-drive-german-equatorial-mount","title":"Sharpstar Carbon Fibre Tripod for Colour Carbon Mark III Harmonic Drive German Equatorial Mount","description":"\u003ch1 class=\"title page-title\" data-mce-fragment=\"1\"\u003eSharpstar Carbon Fibre Tripod for Colour Carbon Mark III Harmonic Drive German Equatorial Mount.\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eThis is a lightweight carbon fibre tripod specifically designed for the Sharpstar Mark III mount.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eMark III is a lightweight and portable German equatorial mount with a delicate harmonic gear system. Despite its lightweight of 7.95kg, Mark III boasts outstanding payload capacity, quick dynamic response and accurate data-transmission and processing. It’s a great option for astro-observation or astrophotography, and a handy and functional helper along your journey to the universe exploration.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cbr\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":42313216360625,"sku":"SSCFTripod","price":579.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sharpstar-carbon-fibre-tripod-for-colour-carbon-mark-iii-harmonic-drive-german-equatorial-mount-859376.jpg?v=1718365039"},{"product_id":"askar-fra400-f-5-6-with-focal-reducer-to-attain-f-3-9-1","title":"Askar FRA400 Astrograph Flat-Field f\/5.6 to f\/3.9 Telescope","description":"\u003ch2\u003eAskar FRA400 Flat-Field Astrograph \u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA400 is part of the acclaimed Askar FRA (Flat-field Refractive Astrograph) series, designed for high-quality astrophotography and visual observation. With built-in flat-field correction and excellent control of chromatic aberration, the FRA400 delivers sharp, colour-accurate stars from centre to edge — even on full-frame sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S7a53e74235064d989c198f58cfc86d87s.jpg\" alt=\"Askar FRA400 Telescope\" style=\"width: 100%; max-width: 900px; margin: 20px auto; display: block;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eFlat-Field Design for Full-Frame Imaging\u003c\/h2\u003e\n\u003cp\u003eThe FRA400 optical system uses a premium 5-element design with a built-in field flattener. This means no need for additional spacing or back-focus adjustments — simply connect your camera and capture perfectly flat star fields every time.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S66f0dd4fc74c4669ac1fc3d324c4de8e6.png\" alt=\"Askar FRA Optical Design\" style=\"width: 100%; max-width: 900px; margin: 20px auto; display: block;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eFast and Flexible Imaging Performance\u003c\/h2\u003e\n\u003cp\u003eAt its native focal ratio of \u003cstrong\u003ef\/5.6\u003c\/strong\u003e, the FRA400 is already fast enough for nebulae, galaxies, and wide-field deep-sky imaging. The included \u003cstrong\u003efocal reducer\u003c\/strong\u003e takes this even further — reducing the system to \u003cstrong\u003ef\/3.9\u003c\/strong\u003e for dramatically shorter exposure times and an even wider field of view.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S264365ce2a734e6e9a8b4f9508e2ce1ax.jpg\" alt=\"Askar FRA400 Tube Rings\" style=\"width: 100%; max-width: 900px; margin: 20px auto; display: block;\"\u003e\u003c\/p\u003e\n\u003ch2\u003ePractical Mounting and Rig Setup\u003c\/h2\u003e\n\u003cp\u003eThe FRA400 includes stylish, patented tube rings featuring multiple accessory mounting points. This makes attaching guide scopes, mini PCs, dew heaters, and focus motors simple and stable — perfect for both field and observatory use.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Scb918ea7a69a4e8a8c24bbcf0951b1bad.jpg\" alt=\"Askar FRA400 Setup\" style=\"width: 100%; max-width: 900px; margin: 20px auto; display: block;\"\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlat-field astrograph design for imaging — no additional flattener required\u003c\/li\u003e\n\u003cli\u003eIncludes focal reducer to reach an ultra-fast \u003cstrong\u003ef\/3.9\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFull-frame imaging circle — sharp stars edge to edge\u003c\/li\u003e\n\u003cli\u003eExcellent chromatic aberration control\u003c\/li\u003e\n\u003cli\u003eStrong, stylish tube rings with multiple accessory mounting points\u003c\/li\u003e\n\u003cli\u003eIdeal for deep-sky imaging and visual observation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose the Askar FRA400?\u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA400 is engineered to make astrophotography simpler, faster, and more reliable. Whether you're capturing colourful nebulae, galaxy fields, or expansive wide-field shots, the FRA400 delivers stunning results with minimal setup complexity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExplore the universe with clarity, speed, and precision.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr style=\"margin: 30px 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42380668174513,"sku":"ASKR-FRA400","price":1260.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-fra400-f56-with-focal-reducer-to-attain-f39-142123.webp?v=1718364130"},{"product_id":"askar-fra500-f-5-6-quintuplet-astrograph-apo","title":"Askar FRA500 90mm f\/5.6 Quintuplet Flat-Field APO Astrograph","description":"\u003ch2 data-mce-fragment=\"1\" class=\"title page-title\"\u003eAskar FRA500 f\/5.6 Quintuplet Astrograph APO Refractor Telescope\u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA500 belongs to the renowned FRA (Flat-field Refractive Astrograph) series. With a \u003cstrong\u003equintuplet, Petzval-like design\u003c\/strong\u003e including \u003cstrong\u003etwo ED elements\u003c\/strong\u003e, it delivers a naturally flat field and excellent chromatic correction for \u003cstrong\u003efull-frame astrophotography\u003c\/strong\u003e and refined visual observing.\u003c\/p\u003e\n\u003ch2\u003eHighlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-element Petzval-style optical system\u003c\/strong\u003e (3+2) with two ED lenses for tight, colour-pure stars\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNative flat field\u003c\/strong\u003e—no external flattener or spacing math required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90 mm aperture · 500 mm focal length · f\/5.6\u003c\/strong\u003e for deep-sky imaging \u0026amp; smaller targets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55 mm image circle\u003c\/strong\u003e—covers full-frame sensors with edge-to-edge sharpness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust 3.5″ dual-speed focuser\u003c\/strong\u003e with clear graduations and finder base\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable:\u003c\/strong\u003e 410 mm retracted length, ~4.1 kg OTA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality control:\u003c\/strong\u003e 15-step QA and premium mechanical finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eAccording to customer feedback, performance rivals or exceeds some higher-priced alternatives, while remaining compact for field use.\u003c\/em\u003e\u003c\/p\u003e\n\u003cfigure style=\"margin: 20px 0;\"\u003e\u003cimg style=\"width: 100%; max-width: 1200px; display: block; margin: 0 auto;\" height=\"931\" width=\"1600\" loading=\"lazy\" alt=\"Askar FRA500 quintuplet astrograph refractor—overview\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fra500-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-1600pix.webp\"\u003e\n\u003cfigcaption style=\"text-align: center; margin-top: 8px;\"\u003eFRA500: flat-field astrograph optimised for full-frame imaging.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003ch2\u003eOptical Design \u0026amp; Field Correction\u003c\/h2\u003e\n\u003cp\u003eThe FRA500 inherits the \u003cstrong\u003eFRA series 3+2 lens group\u003c\/strong\u003e: a front triplet (two ED) controls CA and spherical aberrations, while a rear doublet sets the focal plane and flattens the field. The result is \u003cstrong\u003esharp stars to the edge\u003c\/strong\u003e with minimal tilt sensitivity and no back-focus puzzles.\u003c\/p\u003e\n\u003cfigure style=\"margin: 20px 0;\"\u003e\u003cimg style=\"width: 100%; max-width: 1200px; display: block; margin: 0 auto;\" height=\"848\" width=\"1200\" loading=\"lazy\" alt=\"Askar FRA500 optical and mechanical layout\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fra500-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-2.webp\"\u003e\u003c\/figure\u003e\n\u003ch2\u003ePortable, Rigid, and Rig-Friendly\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e3.5″ focuser\u003c\/strong\u003e offers coarse and 1:10 fine adjustment with clear scale markings. A standard finder base simplifies adding a guider or accessories. The included \u003cstrong\u003etube rings, carry handle, and Losmandy-style dovetail\u003c\/strong\u003e support secure mounting and tidy cable runs—ideal for mobile imaging setups.\u003c\/p\u003e\n\u003cfigure style=\"margin: 20px 0;\"\u003e\u003cimg style=\"width: 100%; max-width: 1000px; display: block; margin: 0 auto;\" height=\"325\" width=\"1000\" loading=\"lazy\" alt=\"Askar FRA500 portable configuration with rings, handle and Losmandy plate\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fra500-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-5.webp\"\u003e\u003c\/figure\u003e\n\u003ch2\u003eTech Specs\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; max-width: 900px; border-collapse: collapse; margin: 12px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eAperture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e90 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eFocal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e500 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eFocal Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eOptical Layout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eQuintuplet air-spaced APO (3+2), 2 × ED elements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eImage Circle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eBack Focus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e158 mm from M48×0.75 (conical extender) · 85 mm from M86×1 (rotator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e452 mm (dew shield extended) · 410 mm (retracted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eWeight (OTA)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e≈ 4.1 kg · Gross ≈ 5.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eRear Thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eM86×1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eAdapter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eConical adapter to M48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eIncluded\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eFRA500 OTA, tube rings, handle, Losmandy-style plate, conical extender, manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cfigure style=\"margin: 20px 0;\"\u003e\u003cimg style=\"width: 100%; max-width: 1200px; display: block; margin: 0 auto;\" height=\"561\" width=\"1200\" loading=\"lazy\" alt=\"Askar FRA500 imaging configuration and details\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fra500-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-3.webp\"\u003e\u003c\/figure\u003e\n\u003ch2\u003eWhat It’s Great For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFull-frame, wide-to-moderate field deep-sky imaging (nebulae, clusters, smaller galaxies)\u003c\/li\u003e\n\u003cli\u003ePortable rigs and remote trips where \u003cstrong\u003erigidity + speed + simplicity\u003c\/strong\u003e matter\u003c\/li\u003e\n\u003cli\u003eVisual observing with crisp, high-contrast views\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfigure style=\"margin: 20px 0;\"\u003e\u003cimg style=\"width: 100%; max-width: 1200px; display: block; margin: 0 auto;\" height=\"1279\" width=\"1200\" loading=\"lazy\" alt=\"Askar FRA500 mechanical details and finish\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fra500-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-4.webp\"\u003e\u003c\/figure\u003e\n\u003cfigure style=\"margin: 20px 0;\"\u003e\u003cimg style=\"width: 100%; max-width: 1000px; display: block; margin: 0 auto;\" height=\"751\" width=\"1000\" loading=\"lazy\" alt=\"Askar FRA500 accessories and included components\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fra500-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-6.webp\"\u003e\u003c\/figure\u003e\n\u003chr style=\"margin: 30px 0;\"\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440202322097,"sku":"ASKR-FRA500F56","price":1950.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-fra500-f56-quintuplet-astrograph-apo-385352.webp?v=1718364124"},{"product_id":"askar-fra600-f-5-6-quintuplet-astrograph-apo","title":"Askar FRA600 f\/5.6 Quintuplet Astrograph APO","description":"\u003ch2\u003eAskar FRA600 f\/5.6 Quintuplet Astrograph APO Refractor Telescope\u003c\/h2\u003e\n\n\u003cp\u003eThe Askar FRA600 is a member of the FRA (Flat-field Refractive Astrograph) series, designed for full-frame astrophotography and refined visual observing. Its \u003cstrong\u003e5-element Petzval-like design\u003c\/strong\u003e with \u003cstrong\u003etwo ED elements\u003c\/strong\u003e provides a naturally flat field, excellent colour correction, and crisp, round stars across a generous \u003cstrong\u003e66 mm image circle\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eHighlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e108 mm aperture • 600 mm focal length • f\/5.6\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuintuplet (3+2) APO\u003c\/strong\u003e optical layout with two ED lenses for tight, colour-pure stars\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNative flat field\u003c\/strong\u003e—no external flattener or spacing maths required\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e66 mm image circle\u003c\/strong\u003e—surpasses standard full-frame coverage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge 4.2″ rack-and-pinion focuser\u003c\/strong\u003e with 1:10 micro-adjust and multi-thread adapters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePortable\u003c\/strong\u003e 493 mm length (dew shield retracted), robust rings, handle, Losmandy plate\u003c\/li\u003e\n  \u003cli\u003eQuality-assured mechanical finish and smooth operation under imaging payloads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eCustomer feedback suggests performance comparable to, or exceeding, some higher-priced alternatives—while remaining practical for portable rigs.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cfigure style=\"margin:20px 0;\"\u003e\n  \u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fra600-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-3.webp\" alt=\"Askar FRA600 quintuplet astrograph overview\" loading=\"lazy\" width=\"1600\" height=\"931\" style=\"width:100%;max-width:1200px;display:block;margin:0 auto;\"\u003e\n\u003c\/figure\u003e\n\n\u003ch2\u003eWatch: Unboxing \u0026amp; Demonstration\u003c\/h2\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:740px;margin:0 auto;\"\u003e\n  \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/saNRBS695Dc\" title=\"Askar FRA600 Quintuplet Astrograph Unboxing and Demo\" frameborder=\"0\" allowfullscreen style=\"position:absolute;top:0;left:0;width:100%;height:100%;\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eOptical Design \u0026amp; Field Correction\u003c\/h2\u003e\n\u003cp\u003eLike the FRA400, the FRA600 uses a \u003cstrong\u003ePetzval-style 3+2 configuration\u003c\/strong\u003e: a front triplet (including two ED elements) manages aberrations; a rear doublet sets the focal plane and flattens the field. The 80 mm rear-group elements help maintain illumination, yielding \u003cstrong\u003eeven brightness and pinpoint stars\u003c\/strong\u003e across the frame.\u003c\/p\u003e\n\n\u003cfigure style=\"margin:20px 0;\"\u003e\n  \u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fra600-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-5.webp\" alt=\"Askar FRA600 optical and mechanical layout\" loading=\"lazy\" width=\"1200\" height=\"848\" style=\"width:100%;max-width:1200px;display:block;margin:0 auto;\"\u003e\n\u003c\/figure\u003e\n\n\u003ch2\u003eFocuser, Mechanics \u0026amp; Rig-Friendliness\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e4.2″ R\u0026amp;P focuser\u003c\/strong\u003e offers coarse and 1:10 fine control, clear graduations, and multiple thread options. The standard conical extension provides \u003cstrong\u003eM68×1\u003c\/strong\u003e, \u003cstrong\u003eM54×0.75\u003c\/strong\u003e and \u003cstrong\u003eM48×0.75\u003c\/strong\u003e connections (with 2″ filter holder), simplifying camera attachment and future-proofing your setup. Multifunction red-anodised \u003cstrong\u003etube rings\u003c\/strong\u003e include mounting points on three sides for guidescopes, controllers, and mini PCs.\u003c\/p\u003e\n\n\u003cp\u003eWith a tube diameter of 120 mm and a \u003cstrong\u003eretractable dew shield\u003c\/strong\u003e, the OTA measures \u003cstrong\u003e493 mm retracted\u003c\/strong\u003e, making it a practical choice for travel and remote imaging.\u003c\/p\u003e\n\n\u003cfigure style=\"margin:20px 0;\"\u003e\n  \u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fra600-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-6.webp\" alt=\"Askar FRA600 focuser, adapters and finish\" loading=\"lazy\" width=\"1200\" height=\"800\" style=\"width:100%;max-width:1200px;display:block;margin:0 auto;\"\u003e\n\u003c\/figure\u003e\n\n\u003ch2\u003eWhat It’s Great For\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFull-frame deep-sky imaging with a moderate field (nebulae, clusters, smaller galaxies)\u003c\/li\u003e\n  \u003cli\u003ePortable rigs where \u003cstrong\u003erigidity, flat field, and simplicity\u003c\/strong\u003e are essential\u003c\/li\u003e\n  \u003cli\u003eHigh-contrast visual observing with minimal chromatic aberration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;max-width:900px;border-collapse:collapse;margin:12px 0;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eAperture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e108 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eFocal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e600 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eFocal Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eOptical Layout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eQuintuplet dual-ED air-spaced APO (Petzval-like 3+2)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eImage Circle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e66 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eBack Focus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e160 mm from rotator M90×1 thread\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e493 mm (dew shield retracted)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eOTA Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e~6.5 kg (TBC)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eBack-End Threads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eM108×1 (no rotator), M90×1; 2″ \u0026amp; 1.25″ eyepiece holders\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003e\u003cstrong\u003eIncluded Adapters\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px;\"\u003eM90×1→M68×1, M68×1→M54×0.75, M54×0.75→M48×0.75 (with 2″ filter holder)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFRA600 OTA with retractable dew shield\u003c\/li\u003e\n  \u003cli\u003ePair of tube rings with top handle\u003c\/li\u003e\n  \u003cli\u003eLosmandy-style dovetail bar\u003c\/li\u003e\n  \u003cli\u003eConical adapter set (thread converters + 2″ filter holder)\u003c\/li\u003e\n  \u003cli\u003e2″ to 1.25″ adapter (eyepiece holder)\u003c\/li\u003e\n  \u003cli\u003eInstruction manual \u0026amp; QC inspection list\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGallery\u003c\/h2\u003e\n\u003cfigure style=\"margin:20px 0;\"\u003e\n  \u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fra600-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-4.webp\"\u003e\n    \u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fra600-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-4.webp\" alt=\"Askar FRA600 side profile and mechanical details\" loading=\"lazy\" width=\"1200\" height=\"900\" style=\"width:100%;max-width:1200px;display:block;margin:0 auto;\"\u003e\n  \u003c\/a\u003e\n\u003c\/figure\u003e\n\n\u003cfigure style=\"margin:20px 0;\"\u003e\n  \u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ip\/content\/askar-fra600-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-a.webp\"\u003e\n    \u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ip\/content\/askar-fra600-f-5.6-quintuplet-astrograph-apo-apochromatic-refractor-telescope-a.webp\" alt=\"Askar FRA600 accessories and adapters layout\" loading=\"lazy\" width=\"1200\" height=\"900\" style=\"width:100%;max-width:1200px;display:block;margin:0 auto;\"\u003e\n  \u003c\/a\u003e\n\u003c\/figure\u003e\n\n\u003chr style=\"margin:30px 0;\"\u003e\n","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440205107377,"sku":"ASKR-FRA600F56","price":2699.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-fra600-f56-quintuplet-astrograph-apo-220225.webp?v=1718364137"},{"product_id":"askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-2","title":"Askar 107PHQ 107mm f\/7 ED APO Quadruplet Apochromatic Refractor – Dark Clear Skies","description":"\u003ch1 data-mce-fragment=\"1\"\u003eASKAR 107PHQ 107mm f\/7 ED APO Quadruplet Apochromatic Refractor Telescope\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-1c.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-1c.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAskar 107PHQ, a versatile all-rounder\u003cbr data-mce-fragment=\"1\"\u003eThe Askar 107PHQ can literally be applied in any conceivable situations, and that’s the top reason why 107PHQ is produced: to slash as much trouble for users as possible.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eASKAR 107PHQ ED APO quadruplet telescope features:\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• 107MM f\/6.5 three-element full separation optical design\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Includes two ED lens elements\u003cbr data-mce-fragment=\"1\"\u003e• Built-in field flattener for full fram photography with 44mm image circle\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Wide range of imaging connections: M68, M54, M48\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• New 3.4\" dual-speed rack and pinion focuser, 10:1 fine focus for up to 8kg payload\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e•  2\" and 1.25\" universal interfaces\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Angle adjuster for 360 degree rotation\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Universal (Vixen-style) dovetail bar with tube rings\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Comes with a finderscope shoe\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cdiv class=\"youtube-embed-wrapper\" data-mce-fragment=\"1\"\u003e\u003ciframe height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/GlCOFG-kPUg\" width=\"640\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.youtube.com\/embed\/GlCOFG-kPUg\" allowfullscreen=\"\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAs the first long-focal-ratio Flatfield astrograph from Askar, 107PHQ is born with a special mission: whether you are just getting started in astrophotography, or an enthusiast who has been quite familiar with all equipment and devices, you can always find Askar 107PHQ a useful astrograph which is functionally practical and physically attractive.\u003cbr data-mce-fragment=\"1\"\u003eIt’s especially amateur or beginner friendly since you don’t need to attach an extra field flattener to get a satisfactory picture. And for the fact that you don’t need a flattener and you can easily get over back-focus calculation and confusing connection steps, all you need to do is to equip your 107PHQ with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-2c.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-2c.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAskar 107PHQ can capture tiny star objects due to its 740mm focal length and astonishing field flattening capacity. When used Askar 107PHQ and a high-resolution camera, it can still bring out lots of detailed information of your target.\u003cbr data-mce-fragment=\"1\"\u003eAskar 107PHQ is also a nice choice for your visual observation. It fits 1.25\", 2\" zenith mirrors as well as various eyepieces and can achieve a perfect focus. It can even be used to observe planets with a super-high magnification eyepiece.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-3.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-3.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAskar 107PHQ, an f\/7 astrograph, contains four pieces of lenses including two pieces of ED glass, which can better reduce chromatic aberration. It can achieve excellent color correction even with the magnification mounting to 300× in visual observation.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-4.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-4.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe sleek 107PHQ is assembled with high-quality CNC-machined components and wrapped with smooth coating. The calm and seriousness is offset by the bright green decorative rings or knobs. The 3.4\" rigid focuser is capable of handling a load of 8kg. It’s designed with a long travel distance of 95mm, which is suitable for visual observation. And it’s been optimized especially for astrophotography.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-5-copy.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-5-copy.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe built-in Flatfield lens is a great contribution to Askar 107PHQ’s imaging ability. It supports 44mm full-frame imaging. The stars around the corner of the images seldom suffer from distortion or deformation. At the center of its field of view, the RMS radius is merely 3um. Even a fastidious user can also be satiated when it comes to the shape of stars. Askar 170PHQ can effectively handle with problems of field curvature and vignette.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-6.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-6.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe standard package includes an Askar 107PHQ OTA, a set of four-piece M86-M48 adapters, a pair of tube rings, a 300mm Askar Vixen-style dovetail plate and a high-quality aluminum suitcase.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-7.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-7.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSPECIFICATIONS\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAperture size：107mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFocal length：749mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFocal ratio：f\/7\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eObjective lens：Quadruplet air-spaced APO (including two ED glass)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eImage circle：44mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMaximum accessory connection (with the focuser fully retreated)：\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e1. Imaging mode:\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e79mm (from the base of M48×0.75 male thread)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e99mm (from the base of M54×0.75 male thread)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e119mm (from the base of M68×1male thread)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e149mm (from the base of M86×1 male thread)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e2. Observing mode:\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e120mm (from the end of 2\" visual back)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTotal length：603mm（when the dew shield is contracted）\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e754mm（when the dew shield is stretched）\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNet weight：5.7kg\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eGross weight：6.9kg\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eRear-end thread type：M86×1 to M68×1\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eM68×1 to M54×0.75\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eM54×0.75 to M52×0.75\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eM52×0.75 to M48×0.75（with M48×0.75 filter thread）\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFour-piece photographic adapter：M48×0.75\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eStandard package items：a 107PHQ OTA，a pair of tube rings, a handle, an Askar 300mm Vixen dovetail plate, a set of four-piece photographic adapters, a manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-8.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-8.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-9.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-9.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-10.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-10.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-11.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-107phq-107mm-f-7-ed-apo-quadruplet-apochromatic-refractor-telescope-11.webp\"\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440210841777,"sku":"ASKAR-107PHQ","price":2699.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-107phq-107mm-f7-ed-apo-quadruplet-apochromatic-refractor-602637.webp?v=1718364130"},{"product_id":"sharpstar-13028hnt-130mm-super-fast-f-2-8-hyperboloid-newtonian-reflector-telescope-red","title":"SharpStar 13028HNT 130mm Super-Fast f\/2.8 Hyperboloid Newtonian Reflector Telescope - RED","description":"\u003ch1\u003eSharpStar 13028HNT 130mm Super-Fast f\/2.8 Hyperboloid Newtonian Reflector Telescope with Carbon Fibre Tube\u003cbr\u003e\n\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eSharpstar took the initiative in launching the very first 150mm hyperbolic Newtonian reflective telescope with an extremely-fast focal ratio of f\/2.8 just a few years ago. We are referring to the very popular 15028HNT that has garnered a quite large following since its advent. Not indulging in this great achievement, Sharpstar keeps on with their creativity and dynamism, and now introducing the new 13028HNT to their customers, which has a same focal ratio but a slightly smaller aperture.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe 13028HNT, with a hyperbolic primary mirror, produces round and sharp stars within the full-frame format and supports a 44mm imaging circle. Compared with the more widely used focal  ratio of f\/4, the 13028HNT can attain the same image brightness with almost half of the exposure time. Additionally, due to its compact and concise design of the telescope tube, it will certainly create huge interest on the market. Users who need a compact, but extremely fast travel telescope would benefit immencely.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e365ASTRONOMY TESTING PROCEDURES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe would usually test about 30 - 60% of  the arriving Sharpstar and Askar telescopes (except the smallest ones in the FMA and ACL range). This will provide us with a good understanding of the quality of that batch of optics. We would also test the focuser and check the optical tube, tube rings and dovetail bar and accessories for any visible damage or fault and take a series of test images with a full frame dSLR camera of a specially designed test chart that will show whether the telescope is fit for a full frame sensor or not, whether the image is flat in all corners and generally it will indicate the quility of the optics, i.e. resolution. Whilst we do store this information for all tested telescopes, we don't usually include a printed report, but if you ask, we might be able to send it to you). If we find that the optics are not correctly collimated then we will send them to a specialist to correct it or if the optics cannot be corrected to a good performance then those will be sent back to the manufacturer for replacement, although our experience with Sharpstar and Asker telescopes is quite good, we rarely had to do that. We believe that there is no need to offer complicated optical test reports that would assume a degree in optical sciences from the user to fully understand them.  \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/sharpstar-13028hnt-130mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope-red-3.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe primary mirror is made of a Pyrex-alike glass PZ33. The thermal expansion coefficient is smaller than that of ordinary glass. The dielectric multilayer coating makes the primary mirror obtain a highly reflective surface of up to 97%. The minor axis of the secondary mirror is 65mm, enabling sufficient illumination for full-frame imaging. It's worth mentioning that the coma corrector is a two-part refractive-lens set, one of which is an ED glass, aiming to simplify the optical system while enhancing the aberration correction level.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe telescope tube is totally made of high-end carbon fiber material to achieve a lightweight design whilst creating an artistically beautiful instrument. All the component parts are from CNC constructed metals. The pair of tube rings feature pierced design. Although it increased the production cost, but it will certainly offer an extraordinary customer experience because of its lightweight and detail-oriented design concept.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/sharpstar-13028hnt-130mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope-red-4.webp\"\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\n\u003cspan\u003eThe focuser is a 2.5\" rack-and-pinion device. It is equipped with coarse as well as fine adjustment hand knobs to further improve the focusing precision. The focuser is tapped with M63 thread which can be switched into a more general M48×0.75 thread with a proper adapter ring (included). Thus the users may have a wider range of options in connecting other astronomy accessories to the focuser. The back-focus is standard 55mm(starting from the base of the mounting thread on the adapter ring’s housing), which is user-friendly for newcomers.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA versatile handle and a standard Vixen-style dovetail plate are also included in the 13028HNT package, which may be of convenience for users to attach other potential accessories and to place the telescope on various equatorial mounts.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003eAlthough the telescope doesn't come with an instruction manual, one of our friends has written a nice tutorial that is available via his website.\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003eClick here for  \u003ca href=\"https:\/\/www.stastrophotography.com\/a-step-by-step-guide-to-collimation\/\" target=\"_blank\"\u003e\u003cb\u003eA STEP BY STEP GUIDE TO COLLIMATION\u003c\/b\u003e by Simon Todd.\u003c\/a\u003e  Link shared with his permission.\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/sharpstar-13028hnt-130mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope-red-5.webp\"\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical parameters:\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan\u003eAperture：130mm\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eFocal length of primary mirror：364mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFocal ratio of primary mirror：f\/2.8\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePrimary mirror type：Hyperbolic reflective mirror\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePrimary mirror material：PZ33（similar to Pyrex glass）\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCorrector：two-element air-spaced refractive lenses（including one ED glass）\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMinor axis of secondary mirror：65mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eImage circle：44mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eField of view：6.9 degree\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMain tube material：High-end carbon fiber\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMain tube outer diameter：174mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMain tube length：394mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eNet weight：3.2kg\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eGross weight：4.3kg（including protective cap, tube rings, handle and Vixen-style dovetail plate）\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eResolution：0.89 arc second\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFocuser：2.5\" with fine-adjustment\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLimiting visual magnitude：12.3\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBack-focus：55mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eBOX DIMENSIONS\/WEIGHT: 38 x 42 x 64 cm, 11.5kg\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e*Please note, eyepiece is not included.\u003c\/em\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e \u003c\/p\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e \u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/sharpstar-13028hnt-130mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope-red-6.webp\" height=\"771\" width=\"1024\"\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/1c-sharpstar-15028hnt-150mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope.webp\"\u003e \u003c\/a\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/sharpstar-13028hnt-130mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope-red-7.webp\" height=\"769\" width=\"1024\"\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/960px-sharpstar-15028hnt-150mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope-case.webp\"\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/960px-sharpstar-15028hnt-150mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope-case.webp\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cem\u003eThe SharpStar 13028HNT comes in a very sturdy carrying case.\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003ch3\u003eSAMPLE IMAGES\u003c\/h3\u003e\n\u003cp\u003eClick here to see the original image:\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.sharpstar-optics.com\/Upload\/161882073456.jpg\"\u003eOrion-Horsehead-Flame Image by Sharpstar 13028HNT\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eBelow image has been heavily reduced in size: appr. 1\/3 of the original size.\u003c\/p\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e \u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/sharpstar-13028hnt-130mm-super-fast-f-2.8-hyperboloid-newtonian-reflector-telescope-red-8-orion-horsehead-flame-1100px.webp\" height=\"736\" width=\"1100\"\u003e\n\u003c\/div\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":42440216871089,"sku":"SHS-13028HNT","price":1769.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sharpstar-13028hnt-130mm-super-fast-f28-hyperboloid-newtonian-reflector-telescope-red-637659.webp?v=1718364953"},{"product_id":"sharpstar-sca260-v2-aspherical-cassegrain-telescope-260mm-f-5","title":"SharpStar SCA260 V2 Aspherical Cassegrain Telescope 260mm f\/5","description":"\u003ch1 data-mce-fragment=\"1\"\u003eSharpStar SCA260 Aspherical Cassegrain Telescope 260mm - Fast f\/5 Optics\u003c\/h1\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eThis is the version 2 that comes with some improvements (i.e. better focuser).\u003c\/h2\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eThe serious amateur's large astro photo instrument for deepsky, at the edge of portability, this fast Cassegrain is recommended mainly for astro photography!\u003c\/h2\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFOR FULL FRAME IMAGING!\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThis might be a good alternative to Schmidth-Cassegrain telescopes as it sits nicely somewhere between a f\/10 SCT (like a Celkestron 11\" Edge HD) and a 11\" RASA, but for a very similar cost to an 11\" Edge HD you got a much faster instrument at f\/5. Additional bonuses are the cooling fans and the heavy duty rack and pinion focuser, not to mention the so important carbon fiber tube...\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSharpStar SCA260 telescope features:\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• 260MM f\/5 Aspherical Cassegrain optical design with triplet field flattener\u003cbr data-mce-fragment=\"1\"\u003e• Primary mirror material: PZ33 (sma as pyrex glass)\u003cbr data-mce-fragment=\"1\"\u003e• Secondary mirror: spherical\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Image circle: 80mm\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Tube material: carbon fiber\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Outer diameter of tube: 280.5mm\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• \u003c\/span\u003eTube length: 712mm\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• \u003c\/span\u003eTube weight: 15kg\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• \u003c\/span\u003eResolution: 0.46\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• \u003c\/span\u003eFocuser: 3.2 inch\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• \u003c\/span\u003eVisual limiting magnitude: 13.8\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• \u003c\/span\u003eBack focus: 75mm (calculated from the end of M48 thread)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe SharpStar SCA 260 is a beautifully designed unique optical intrument from Sharpstar!\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e \u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003eSharpstar-optics is excited to launch their newest telescope, an Aspherical Cassegrain OTA SCA260 with short focal ratio. The primary mirror is aspherical with a more complicated grinding task that is reflected in the price. Testing requirements are also more complex than traditional primary mirrors. Its carbon fiber tube is lightweight, durable and nice looking, and the use Pyrex-like materials provides a better controlled quality than traditional materials.\u003cbr data-mce-fragment=\"1\"\u003eThe primary and secondary mirrors are all made with enhanced aluminum coating, and the reflectivity is guaranteed to be above 95%. The secondary mirror has a new lever adjustment function that can be moved in a horizontal position. The 3-inch dedicated focuser ensures smooth operation without slipping when taking photos with heavy accessories.\u003cbr data-mce-fragment=\"1\"\u003eAll CNC aluminum parts and novel hollow handles can be connected to different accessories. The appearance and mechanical quality are of high standards. Its design is to meet the needs of today’s demanding astronomer.\u003cbr data-mce-fragment=\"1\"\u003eThe optical path includes a triplet 3\" field flattener, thus ensuring full-frame photography and vignetting control. The two M54×0.75 threads and M48×0.75 threads at the rear of the focuser can meet different needs and are convenient to connect to most commercially available imaging-terminals and help to achieve perfect focus.\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e \u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/sharpstar-sca260-aspherical-cassegrain-telescope-260mm-f-5-ca.webp\" data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/sharpstar-sca260-aspherical-cassegrain-telescope-260mm-f-5-ca.webp\" data-mce-fragment=\"1\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e \u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/sharpstar-sca260-aspherical-cassegrain-telescope-260mm-f-5-d.webp\" data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/sharpstar-sca260-aspherical-cassegrain-telescope-260mm-f-5-d.webp\" data-mce-fragment=\"1\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e \u003c\/div\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eUser contributions:\u003c\/h3\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003ch4 data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eMELOTTE 15 – “THE HEART OF THE HEART NEBULA”\u003c\/strong\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSubject:                              Melotte 15 – “The Heart of the Heart Nebula”\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eImaging OTA:                     Sharpstar SCA260 – 1300mm, f\/5.0\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eImaging Camera:               ZWO ASI2600MM-PRO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFilters:                      \u003cwbr data-mce-fragment=\"1\"\u003e           Antlia 2” Narrowband: Ha (3nm); Sii (3.5nm); Oiii (3.5nm)\u003c\/wbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFilter Wheel:                      ZWO 7 x 2”\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGuide System:                    ZWO OAG-L with ZWO ASI174MM camera\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMount:                        \u003cwbr data-mce-fragment=\"1\"\u003e        Skywatcher EQ6-R\u003c\/wbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCapture Details:                 Ha: 30 x 300s; Sii: 26 x 300s; Oiii: 26 x 300s\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIntegration time: 6h40’\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBortle 4 over 4 nights\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003eCourtesy of Alistair Scobie\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e(Please note, below is a 900px wide version, but if you click on it, you will see a 1600px wide version. The original was even larger, but we had to reduce it to 1600pixels width as that's the max our shopping cart system allows...)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/SCA260\/Melotte_15_B-Alistair-Scobie-SCA260-ASI2600MM-PRO.webp\" data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/SCA260\/Melotte_15_B-Alistair-Scobie-SCA260-ASI2600MM-PRO.webp\" data-mce-fragment=\"1\"\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":42440219787441,"sku":"SHS-SCA260-V2","price":4390.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sharpstar-sca260-v2-aspherical-cassegrain-telescope-260mm-f5-955242.webp?v=1718480280"},{"product_id":"askar-130phq-130mm-f-7-7-ed-apo-quadruplet-telescope-1","title":"Askar 130PHQ 130mm f\/7.7 ED APO Quadruplet Telescope – Dark Clear Skies","description":"\u003ch1\u003eASKAR 130PHQ 130mm f\/7.7 ED APO Quadruplet Apochromatic Refractor Telescope.\u003c\/h1\u003e\n\u003cp\u003eThe Askar 130PHQ offers a long-focal-ratio, flat field astrograph with a focal length of 1000mm with a 60mm imaging circle newly launched after the Askar 107PHQ. Instead of buying extra flatteners, calculating the backfocus of flattener or making tedious connection to match the distance, astrophotographers can simply equip it with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-1.webp\"\u003e\u003c\/p\u003e\n\u003ch1\u003e\u003cbr\u003e\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eASKAR 130PHQ ED APO quadruplet telescope features:\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e• 130MM f\/7.7 quadruplet air-spaced APO design\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Includes two ED lens elements\u003cbr\u003e• Built-in field flattener for up to medium format photography with 60mm image circle\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Wide range of imaging connections: M68, M54, M48\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• New 3.4\" dual-speed rack and pinion focuser, 10:1 fine focus for up to 8kg payload\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e•  2\" and 1.25\" universal interfaces\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Angle adjuster for 360 degree rotation\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Universal (Vixen-style) dovetail bar with tube rings\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Comes with a finderscope shoe\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lp\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-2.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe 130PHQ has a larger size than 107PHQ, with an aperture 23mm larger than 107PHQ. 130PHQ has a focal ratio of f\/7.7 which is longer than 107PHQ’ s f\/7, and a focal length of 1000mm. The quadruplet lens with two ED glasses offers excellent control of chromatic and other aberrations. With its self-flattening design, 130PHQ offers strong advantages in astronomical shooting. It supports a medium frame 60mm image circle, has a fine spot diagram with tiny distortion of the peripheral stars, and its central RMS radius is less than 2 microns.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-3.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-4.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe 130PHQ comes with a telescopic lens hood, a high quality CNC machined and painted tube and attractive decorative parts. The 3.4\" rigid focuser comes with M68, M54, and M52 adapters and a finder base. When used with the 3\" 0.7 x flat field reducer, the telescope can reach a focal ratio of f\/5.4 and a focal length of 700mm, effectively reducing exposure time. The multifunctional handle comes with a central slot for attaching an M6 screw with an M6 screw hole. Standard Losmandy dovetail plate, together with sturdy double tube ring, is perfectly suited for viewing and shooting.\u003cbr\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-5.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003eSPECIFICATIONS\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAperture size：130mm\u003c\/li\u003e\n\u003cli\u003eFocal length：1000mm\u003c\/li\u003e\n\u003cli\u003eFocal ratio：f\/7.7\u003c\/li\u003e\n\u003cli\u003eObjective lens：Quadruplet air-spaced APO (including two ED glass)\u003c\/li\u003e\n\u003cli\u003eImage circle：60mm\u003c\/li\u003e\n\u003cli\u003eMaximum accessory connection (with the focuser fully retreated)：\n\u003cul\u003e\n\u003cli\u003e1. Imaging mode:\u003cbr\u003e116mm（from the base of M48×0.75 male thread）\u003cbr\u003e136mm（from the base of M54×0.75 male thread）\u003cbr\u003e156mm（from the base of M68×1male thread）\u003cbr\u003e186mm（from the base of M76×1 male thread）\u003c\/li\u003e\n\u003cli\u003e2. Observing mode:\u003cbr\u003e148.5mm（from the end of 2\" eyepiece holder）\u003cbr\u003eTotal length：\u003cbr\u003e842.5mm（including 1.25\" eyepiece holder as dew shield contracted）\u003cbr\u003e889.5mm（including 1.25\" eyepiece holder as dew shield fully stretched）\u003cbr\u003e1011.5mm（including the 4-piece adapter as dew shield contracted）\u003cbr\u003e1061.5mm（including the 4-piece adapter as dew shield fully stretched）\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eNet weight：10.2kg\u003c\/li\u003e\n\u003cli\u003eGross weight：12.5kg\u003c\/li\u003e\n\u003cli\u003eRear-end thread type：\u003cbr\u003eM86×1-M68×1    \u003cbr\u003eM68×1-M54×0.75    \u003cbr\u003eM54×0.75-M54×0.75\u003cbr\u003eM54×0.75-M48×0.75（M48×0.75 filter thread inside）\u003c\/li\u003e\n\u003cli\u003eStandard package items：an 130PHQ OTA，a pair of tube rings, a handle, an Askar  losmandy 300mm dovetail plate, a set of 4-piece photographic adapters, a manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-6.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-7.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-8.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/130PHQ\/askar-130phq-130mm-f-7.7-ed-apo-quadruplet-apochromatic-refractor-telescope-9.webp\"\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440253407409,"sku":"ASKAR-130PHQ","price":3990.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-130phq-130mm-f77-ed-apo-quadruplet-telescope-333168.webp?v=1718364135"},{"product_id":"askar-fma230-f230-f-5-5","title":"Askar FMA230 f\/5.5","description":"\u003ch2 data-mce-fragment=\"1\"\u003eASKAR FMA F230 f\/5.5 Astrograph Camera Lens - Triplet APO Refractor Telescope with f\/4.6 reducer\u003c\/h2\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eThe ASKAR FMA230 objective lens features a triplet air-spaced APO design, includes two pieces of ED (extra-low dispersion) glass, providing excellent correction of chromatic aberration, which lays the foundation for high quality astrophotography and observation.\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fma230-f230-f-5.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.6-reducer-3.webp\" target=\"_self\"\u003e\u003cimg data-mce-fragment=\"1\" title=\"ASKAR FMA230 F230 f\/5.5 Astrograph Camera Lens - Triplet APO Refractor Telescope with f\/4.6 reducer\" alt=\"ASKAR FMA230 F230 f\/5.5 Astrograph Camera Lens - Triplet APO Refractor Telescope with f\/4.6 reducer\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fma230-f230-f-5.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.6-reducer-3.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe FMA230 has a compound lens system. The front objective lens comprises three lenses and the posterior reducer is composed of four lenses and thus it’s sometimes dubbed as a “three at the front and four at the rear” system. The aperture size of the objective lens is 50mm and the original focal length is 275mm thus we’ve got a relatively fast focal ratio of f\/5.5. The objective lens contains two ED glasses which are adapted to cure chromatic aberrations.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fma230-f230-f-5.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.6-reducer-6.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOne can barely find an equal counterpart in the market as designing a three-element apochromatic objective lens in astrograph with such size demands more on craftsmanship and processing technique. We made it because we consistently cling to the belief that we have to deliver a better imaging result to our customers. The FMA230 can solely function as a lens to observe the ground scenery or stars in the sky, or as a telescope for direct-focus photography. You should just fine-tune the helical focuser to perfectly focus without adding extra optical devices.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe four-element reducer is a 0.84×optical device which can change the the FMA230 into a 50mm-aperture astrograph with a focal length of 230mm and a focal ratio of f\/4.6. The reducer is designed specially for sophisticated astrophotography, which plays an essential role in improving the image quality generally across the whole field of view. And it pays special attention to the stars at the edge of the image. The pictures will be greatly enhanced and detailed under the help of this dedicated reducer even the imaging equipment you use is a rather professional full-frame ordinary or astronomy camera.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003eFMA230 is equipped with useful standard accessories.\u003cbr data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003eThe pair of tube rings are artistically pierced. Its stalks are lengthened which means that the tube rings provide more room for the devices, like a camera, that are attached to the FMA230, so they won’t collide with the dovetail plate under the astrograph. \u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fma230-f230-f-5.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.6-reducer-schematic.webp\" target=\"_self\"\u003e\u003cimg data-mce-fragment=\"1\" title=\"ASKAR FMA230 F230 f\/5.5 Astrograph Camera Lens - Triplet APO Refractor Telescope with f\/4.6 reducer\" alt=\"ASKAR FMA230 F230 f\/5.5 Astrograph Camera Lens - Triplet APO Refractor Telescope with f\/4.6 reducer\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-fma230-f230-f-5.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.6-reducer-schematic.webp\" height=\"968\" width=\"1600\"\u003e\u003c\/a\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cem data-mce-fragment=\"1\"\u003eClick on the above image for a larger size.\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cem data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/em\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003eThe FMA230 comes with a Vixen-style dovetail plate. Screw the tube-ring-wrapped astrograph onto the dovetail plate and then directly slide the assembly into the slot on top of an equatorial mount. The slot at the center of the dovetail plate is carved for the attachment to a tripod. It’s quite convenient and helpful especially when you carry out some ground imaging or observation.\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003eIn order to solve the awkwardness of carrying around your astrograph when you engage in field astrophotography, the FMA230 is designed with a pretty-looking and utility handle. The detachable handle is installed on the top side of the tube ring. The handle is not just literally a handle, the dovetail slot carved out of the handle can also be a base for the attachment of finders, guiders or ASIAIRs that have a corresponding dovetail foot. So you have more room to integrate as many accessories as possible. Besides, the handle is carved with 45°Arca-swiss style slots at the sides, so an upside-down handle can be directly slid into a corresponding Arca-swiss clamp on a camera tripod.\u003cbr data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003eThe lightweight and compact FMA230 is a new sibling from the Askar FMA- family, it will definitely bring your observing and imaging experience to a whole new level! \u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSPECIFICATIONS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAperture: 50mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFocal Length: 275mm or 230mm (with reducer) \u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFocal Ratio: f\/5.5 or f\/4.6 (with reducer)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eObjective type: Triplet Dual ED air -spaced APO (objective lens only) or Sex\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003etuplet APO Refractor (with reducer)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOverall length: 248mm (when imaging with the reducer) or 221mm (when observing without the diagonal)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eWeight: 1045g\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eBack-end adapter:\u003c\/span\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eM48x0.75 male thread (photographic mode),\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2\" eyepiece holder barrel (observation mode)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eWHAT'S IN THE BOX\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFMA230 body\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ea pair of multi-directional tube rings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eutility-handle (that also serves as a multi-purpose finderscope bracket)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003etwo extension tubes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003einstruction manual\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2\" adapter (2\" eyepiece holder)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440279261361,"sku":"ASKR-FMA230","price":669.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-fma230-f230-f55-755509.webp?v=1718364123"},{"product_id":"askar-acl200-200mm-f-4-professional-sextuplet-apo-telescope-1","title":"Askar ACL200 200mm f\/4 Professional Sextuplet APO Telescope","description":"\u003ch1 data-mce-fragment=\"1\"\u003eASKAR ACL200 200mm f\/4 Professional Sextuplet APO Astro Camera Lens (ACL) Mark II\u003c\/h1\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eA WORLD FIRST! Structure and appearance of a camera lens, but with a performance of a high quality APO telescope!\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eThe current stock is the Mark II version with a different ring and a red finderscope base clamp at the top. (for the same price as the original version)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe ASKAR ACL200has been specifically designed for astrophotography, whilst it meats the requirements of landscape photography. A unique focusing solution, coarse and fine focusing rings with locking knobs provide the ultimate astro photo experience. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eA groundbraking product for full frame cameras that perfectly combines the usual features of a telescope and a telephoto camera lens.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhen using it for deep-sky imaging, it will produce clear and sharp images with minimal amount of distortion and chromatic aberration, resulting in great astrophotos of highest quality. The built-in filter holder that accepts a 2\" filter will help to achieve your goal: use a light pollution filter (like the Optolong L-Pro) or\/and a H-alpha filter and combine them into a single image. Instead of a H-alpha filter you could also consider a dual or triple narrowband filter, like the ZWO 2\" DB filter or Optolong 2\" L-eNhance or 2\" L-eXtreme.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAlthough not exactly lightweight, you can be assured that it is built to last and will serve you many years if handled with care.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-(acl)-mark-ii-1.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-(acl)-mark-ii-1.webp\"\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eNEW FEATURES OF THE MARK II VERSION\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWe did some modification on the old ACL200, hoping to improve our customers’ experience with it, which includes a handle with standard Vixen dovetail finder slot, a new-type mounting ring and two extra thumbscrews.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eCompared with the old mounting ring, the new ring has an extruding stalk for the installation of the handle. And the new-added handle with a dovetail finder slot will serve for many purposes of attachment like finders or ASIAIR controllers. Further more, the handle can also go with a dual-connection of a controller and a finder as the length of which accommodates both accessories\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-(acl)-mark-ii.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-(acl)-mark-ii.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-f.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-f.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-f.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-f.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-g.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-g.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-g.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-g.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-2.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-2.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-2.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-2.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-i.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-i.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-i.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-i.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eFEATURES\u003c\/h2\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eProfessional telescope APO lens for astrophotography\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHigh quality optical design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eEasy to use as a camera lens\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDual speed helical focusing for high precision focusing (fine focus provides micro adjustment - a 1mm movement in one rotation)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLockable 360-degree rotation for perfect framing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2\" filter holder built-in (filter needs to be screwed in)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eArca-Swiss style connection plate with 3\/8\" and 1\/4\" female threads for mounting to a tripod\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eManual aperture control between f\/4 and f\/22 for landscape photography\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eShortest focusing distance: 3m (i.e. for imaging birds, etc.)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-l.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-l.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-l.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-l.webp\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-20.webp\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-20.webp\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eSPECIFICATIONS\u003c\/h2\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFocal Length: 200mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAperture: 50mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eObjective type: Sextuplet APO (six lenses in three groups)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFocal Ratio: f\/4\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMin aperture: f\/22\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAperture blades: 10 pcs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFocus mode: manual\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eType of focusing: coarse and micro motion\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMicro Motion distance: 1mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eClosest focusing distance: appr. 3m\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eFront filter diameter: 82mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOverall length: 195mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDiameter: 100mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eWeight: 1800g\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eBack-end connection:\u003c\/span\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eM48x0.75 male thread (as per supplier's specification, but we've heard from a customer that it is actually M48... we'll check it out shortly)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/AAA-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-k.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/AAA-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-k.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/AAA-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-k.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/AAA-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-k.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/BBB-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-j.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/BBB-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-j.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/BBB-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-j.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/BBB-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-j.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/CCC-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-k.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/CCC-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-k.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/CCC-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-k.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/CCC-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-k.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eWHAT'S IN THE BOX\u003c\/h2\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eACL200 body\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLens shade\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eArce-Swiss style dovetail bar (also compatible with Vixen-style clamps)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eInstruction manual\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e2\" filter holder (assembled with the lens)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eQuality control checklist\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSoft padded case\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eSAMPLE IMAGES\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003e(Click on the images for large size)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-(acl)-mark-ii-Orion.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-(acl)-mark-ii-Orion.webp\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/CCC-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-cC.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/CCC-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-cC.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/CCC-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-cC.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/CCC-askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-cC.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-d.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-d.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-d.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-acl200-200mm-f-4-professional-sextuplet-apo-astro-camera-lens-acl-d.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440285683889,"sku":"ASKR-ACL200MkII","price":759.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-acl200-200mm-f4-professional-sextuplet-apo-205745.webp?v=1718364124"},{"product_id":"askar-fma-f180-f-4-5","title":"Askar FMA F180 f\/4.5","description":"\u003ch1\u003eASKAR FMA F180 f\/4.5 Astrograph Camera Lens - Triplet APO Refractor Telescope with f\/4.5 reducer\/flattener.\u003c\/h1\u003e\n\u003ch2\u003eThe ASKAR FMA180 objective lens features a triplet air-spaced APO design, includes two pieces of ED (extra-low dispersion) glass, providing excellent correction of chromatic aberration, which lays the foundation for high quality astrophotography and observation.\u003c\/h2\u003e\n\u003ch2\u003e \u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-1.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-1.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe ASKAR FMA180 reducer\/flattener features a Triplet air-spaced design, combined use with the also triplet objective lens provides clear and sharp image, specifically optimized for astrophotography, so you don't have to worry about chromatic aberration. Using the f\/4.5 reducer makes it capable of capturing clear astrophotos in considerably less time.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-2.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-2.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eWhen using the special F4.5 full frame reducer\/flattener, the 40mm aperture, 220mm (f\/4.5) focal length ASKAR FMA180 becomes a professional APO refractor with 180mm focal length and it will present excellent performance for both visual observation and astrophotography, .\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFor traditional astrophotography, it is difficult to achieve a focal length of less than 200MM with commercially available telescopes. The only choice in this range is the ordinary camera lens. However,  camera lenses use a large number of lenses (10-15) and therefore are not optimized for astrophotography, so the result is not satisfactory. \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-10.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-10.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe FMA180 is our latest development and if you wanted to capture deep-sky objects, it will offer you superior optical performance in comparison to telephoto prime lenses.\u003c\/p\u003e\n\u003cp\u003eIn addition to photography and observation, the FMA180 can also serve you as a high-performance finder\/guider of your choice. The overall tube length is 145mm, the small size of FMA180 tips the scales at a mere 395g.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-8.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-8.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-9.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-9.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eTherefore, the standard package includes a pair of tube rings and a finder bracket, which can be easily attached to the finder base on the market. In addition, the finder bracket can be divided into two parts, among which the dovetail plate can be used alone, and it can be connected to the tripod with standard camera thread and other head. This SWISS standard dovetail can be connected to the corresponding plate slot more conveniently, and it can also attach to the VIXEN narrow equatorial adapter. Hence you can get rich connectivity for both photographic purposes and observation.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-3.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-3.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eDue to its small size it can be directly attached to a camera like a normal lens, and easy to take anywhere.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-4.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-4.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eClick on the above image for a larger size.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eExamples of use for the FMA180:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-5a.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-5a.webp\"\u003e\u003c\/a\u003e\u003c\/strong\u003e\u003cem\u003eClick on the above image for a larger size.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003ePHOTOGRAPHIC MODE:\u003cbr\u003e \u003c\/h4\u003e\n\u003cp\u003e1) Main tube + focuser + reducer\/flattener + reducer connection extension tube: 180mm F4.5 sextuplet APO flat field correction astrograph lens (recommended photographic mode, product assembled)\u003cbr\u003e2) Main tube + focuser + extension tube 1 + extension tube 2＋reducer connection extension tube : 220mm F5.5 triplet APO lens\u003c\/p\u003e\n\u003ch4\u003e \u003cbr\u003eOBSERVATION MODE:\u003cbr\u003e \u003c\/h4\u003e\n\u003cp\u003e1) Main tube + focuser + extension tube 1 + 1.25\" adapter: It can be combined with 1.25\" star diagonal and eyepiece for standard observation mode or finderscope mode.\u003cbr\u003e2) Main tube + focuser + extension tube 1 + extension tube 2: It can be combined with 1.25\" eyepiece for visual observation mode or finderscope mode.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-6.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-6.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eSPECIFICATIONS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eApertaure: 40mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFocal Length: 220mm or 180mm (with reducer) \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFocal Ratio: f\/5.5 or f\/4.5 (with reducer)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eObjective type: Triplet Dual ED air -spaced APO (objective lens only) or Flatfield Sex\u003c\/span\u003e\u003cspan\u003etuplet APO Refractor (with reducer\/flattener)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOverall length: 145mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWeight: 395g\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBack-end adapter:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eM42x0.75 male thread (photographic mode),\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1.25\" eyepiece holder barrel (observation mode)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eWHAT'S IN THE BOX\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-7.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-7.webp\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFMA180 body (troplet APO + reducer\/flattener)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ea pair of tube rings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003efinderscope bracket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003etwo extension tubes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003einstruction manual\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1.25\" adapter (1.25\" eyepiece holder)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAllen key\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-11.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-11.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-13.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-fma-f180-f-4.5-astrograph-camera-lens-triplet-apo-refractor-telescope-with-f-4.5-reducer-13.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440296038577,"sku":"ASKR-FMA180","price":365.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-fma-f180-f45-689395.webp?v=1718364139"},{"product_id":"askar-65phq-65mm-f-6-4-ed-apo-quintuplet-apochromatic-telescope","title":"Askar PHQ65 APO Refractor (65 mm Quintuplet f\/6.4) – Dark Clear Skies","description":"\u003c!-- Askar PHQ65 – Product Description --\u003e\n\u003cdiv class=\"dcs-product space-y-6\"\u003e\n\n  \u003ch2\u003eAskar PHQ65 – Quintuplet Flat-Field APO Refractor\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The \u003cstrong\u003eAskar PHQ65\u003c\/strong\u003e is a premium \u003cstrong\u003equintuplet APO refractor\u003c\/strong\u003e\n    engineered for astrophotography. Its \u003cstrong\u003eflat-field optical design\u003c\/strong\u003e means no\n    separate flattener is required—making setup simple while delivering\n    \u003cem\u003epinpoint stars across APS-C and full-frame sensors\u003c\/em\u003e.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAperture:\u003c\/strong\u003e 65 mm with a high-quality APO quintuplet design.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlat field:\u003c\/strong\u003e Built-in correction—no extra flattener needed.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFocal length:\u003c\/strong\u003e 416 mm at \u003cstrong\u003ef\/6.4\u003c\/strong\u003e, perfect for nebulae and clusters.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eED elements:\u003c\/strong\u003e Suppresses chromatic aberration for sharp, colour-pure images.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePortable:\u003c\/strong\u003e Compact OTA with retractable dew shield for travel rigs.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eImaging ready:\u003c\/strong\u003e Sturdy rack-and-pinion focuser with dual-speed control.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eTechnical summary\u003c\/h3\u003e\n  \u003ctable role=\"table\" style=\"width:100%;border-collapse:collapse\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eOptical design\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eQuintuplet APO with flat field\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eAperture\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #e5e7eb;\"\u003e65 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eFocal length\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #e5e7eb;\"\u003e416 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eFocal ratio\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #e5e7eb;\"\u003ef\/6.4\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eImage circle\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eFull-frame compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eFocuser\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #e5e7eb;\"\u003e2.5″ rack-and-pinion, dual-speed\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eWeight (OTA)\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #e5e7eb;\"\u003e~3.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eIncluded\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #e5e7eb;\"\u003eOTA, tube rings, dovetail, adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eBest for\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eWide-field astrophotography with APS-C and full-frame sensors\u003c\/li\u003e\n    \u003cli\u003eTravelling astrophotographers who want a compact yet powerful APO\u003c\/li\u003e\n    \u003cli\u003eLarge nebulae, clusters, and Milky Way fields\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- FAQ Schema --\u003e\n  \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"@id\": \"{{ shop.url }}{{ product.url }}#faq\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Does the PHQ65 need a field flattener?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"No. The PHQ65 has a built-in flat-field design that corrects for field curvature natively.\" }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What focal ratio does the PHQ65 operate at?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"It runs at f\/6.4 with a 416 mm focal length.\" }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Is it suitable for full-frame imaging?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"Yes, the PHQ65 provides a corrected field that covers full-frame sensors.\" }\n      }\n    ]\n  }\n  \u003c\/script\u003e\n\u003c\/div\u003e\nProduct introduction\n长友气体\n长友气体\n65mm aperture\n\n长友气体\n416mm focal length\n\n长友气体\nQuadruplet air-spaced APO design\n\n长友气体\nSupporting full frame\n\n长友气体\nCentral RMS radius 2.5um\n\n长友气体\nNo need for flattener\n\n长友气体\n0.75x Reducer\n\n(optional)\n\n长友气体\nNo need to calculate the backfocus\n\n长友气体\nRetractable lens hood\n\n长友气体\n300mm dovetail plate\n\n长友气体\nmulti-functional handle\n\n长友气体\n2.5\" large rack- pinion focuser\n\n长友气体\n1:10 fine adjustment\n\n长友气体\nVarious adapter\n\n  \n65PHQ is a flatfield astrograph newly launched after 80PHQ, 107PHQ, and 130PHQ. Instead of buying extra flatteners, calculating the back focus of the flattener, or making a tedious connection to match the correct distance, astrophotographers can simply equip it with any possible imaging accessories, make the target stay at the focus, and then the whole optical system is perfect for imaging. \n\n\n65PHQ has a smaller size than other PHQ astrographs. 65PHQ has a focal ratio of f\/6.4 and a focal length of 416mm. Instead of the quadruplet structure of other PHQs, the 65PHQ is a quintuplet with two ED glasses which offers excellent control of chromatic and other aberrations. With its self-flattening design, 65PHQ offers strong advantages in the astronomical shooting. It supports the full-frame image circle and has a fine spot diagram with tiny distortions of the peripheral stars.\n\n长友气体\n65PHQ comes with a telescopic lens hood, a high-quality CNC machined and painted tube, and attractive decorative parts. The OTA weighs 2kg, and the full package with tube rings, etc. weighs 2.8kg. The 2.5” rigid focuser comes with a new-type 360° rotator with scales and a finder base. M68, M54, and M48 camera adapters are also attached, and the M48 adapter has a 2” female thread for installing filters.\n\n\nIt is also a nice choice for your visual observation. It fits diagonals as well as various eyepieces and can achieve a perfect focus. It can even be used to observe planets with a super-high magnification eyepiece. The 65PHQ contains a multifunctional handle, a 300mm dovetail plate, and sturdy double tube rings. It is small in size and light in weight, which perfectly caters to your need for viewing and shooting.\n\n长友气体\nSpecifications\n65PHQ Parameters\n\nAperture size\n\n65mm\n\nFocal length\n\n416mm\n\nFocal ratio\n\nf\/6.4\n\nObjective lens\n\nQuintuplet air-spaced APO (including two ED glasses)\n\nImage circle\n\n44mm\n\nMaximum accessory connection (with the focuser fully retreated)：\n\nImaging mode\n\n76mm（from the base of M48×0.75 male thread） \n\n105mm（from the base of M54×0.75 male thread）\n\n130mm（from the base of M68×1 male thread）\n\nObserving mode\n\n121mm（from the end of 2\" eyepiece holder）\n\nTotal length\n\n328mm（including 1.25\" eyepiece holder as dew shield contracted）\n\n388mm（including 1.25\" eyepiece holder as dew shield fully stretched） \n\n360mm（including the 3-piece adapter as dew shield contracted）\n\n420mm（including the 3-piece adapter as dew shield fully stretched）\n\nOTA Weight\n\n2kg\n\nTotal Weight (Including tube ring\u0026amp;dovetail plate）\n\n2.8kg\n\nRear-end thread type\n\nM68×1-M54×0.75\n\nM54×0.75-M54×0.75 \n\nM54×0.75-M48×0.75 (M48×0.75 filter thread inside)\n\nRear end of the 3-piece photographic adapters\n\nM48×0.75\n\nStandard package items\n\nA 65PHQ OTA, a pair of tube rings, a handle, Askar 300mm Vixen-style dovetail plate, a set of 3-piece photographic adapters, a manual\n\n \n\n \n\n长友气体\n\nVideo\n\nImages\n长友气体\n\nLogan Carpenter  | OED1 - The NilAdh Bubble   | ASKAR 65PHQ+ZWO ASI2600MM Pro\n\n长友气体\n\n酱油颜  | NGC6992  | ASKAR 65PHQ+294mc  | Colour Magic Super Duo Narrowband Filter\n\n长友气体\n\n酱油颜  | NGC7293  | ASKAR 65PHQ+294mc  | Colour Magic Super Duo Narrowband Filter\n\n长友气体\n\nZhu Li Qun  | Heart Nebula+Soul Nebula  | ASKAR 65PHQ+6200mm  | SHO total 8 hours\n\n长友气体\n\nJames Negri  | M42, The Great Orion Nebula  | ASKAR 65PHQ+ASI533mc  | Astronomik L-2 Luminance UV\/IR Block 1.25\"\n\n长友气体\n\nRumen Bogdanovski  | Lagoon and Trifid nebulae  | ASKAR 65PHQ+Player One Poseidon C Camera  | Colour Magic D1\n\n长友气体\n\nRumen Bogdanovski  | NGC 2237  | ASKAR 65PHQ+playerone poseidon c pro  | Colour Magic D1\n\n长友气体\n\nRumen Bogdanovski  | M8+M20  | ASKAR 65PHQ  | Colour Magic D1","brand":"Askar","offers":[{"title":"Default Title","offer_id":42849692254385,"sku":"ASKAR-65PHQ-GREEN","price":895.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-65phq-65mm-f64-ed-apo-quintuplet-apo-pink-763953.webp?v=1718364134"},{"product_id":"askar-71f-quadruplet-flatfield-apo-telescope","title":"Askar 71F Quadruplet Flatfield APO Telescope – Dark Clear Skies","description":"\u003ch2\u003eASKAR 71F Quadruplet Flat-Field Apochromatic Refractor Telescope\u003c\/h2\u003e\n\n\u003cp\u003e\nThe \u003cstrong\u003eASKAR 71F\u003c\/strong\u003e is a compact quadruplet apochromatic refractor designed for\nboth astrophotography and visual observing. With a 71mm aperture, 490mm focal length,\nand a native focal ratio of \u003cstrong\u003ef\/6.9\u003c\/strong\u003e, it offers a well-balanced combination of\nportability, image quality, and ease of use.\n\u003c\/p\u003e\n\n\u003ch2\u003eDesigned for Full-Frame Imaging\u003c\/h2\u003e\n\n\u003cp\u003e\nThe ASKAR 71F features a \u003cstrong\u003eself-flattened optical design\u003c\/strong\u003e, supporting a\n\u003cstrong\u003e44mm image circle\u003c\/strong\u003e. This allows full-frame cameras to achieve sharp,\nwell-corrected stars across the entire field without the need for an additional field flattener.\nBack-focus calculations are simplified, reducing setup complexity and overall system cost.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe quadruplet air-spaced APO lens assembly incorporates one element of ED glass,\neffectively controlling chromatic aberration while maintaining high contrast and colour fidelity.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A1.webp\" alt=\"ASKAR 71F quadruplet flat-field apochromatic refractor telescope\"\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A2.webp\" alt=\"ASKAR 71F refractor telescope optical tube assembly\"\u003e\n\u003c\/p\u003e\n\n\u003ch2\u003ePractical and Lightweight Design\u003c\/h2\u003e\n\n\u003cp\u003e\nThe ASKAR 71F OTA weighs just \u003cstrong\u003e2.5kg\u003c\/strong\u003e, with a total packaged weight of\n\u003cstrong\u003e3.0kg\u003c\/strong\u003e including tube rings and dovetail plate. Its compact size and retractable\ndew shield make it easy to transport, store, and deploy in the field.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A3.webp\" alt=\"ASKAR 71F refractor compact design\"\u003e\n\u003c\/p\u003e\n\n\u003cdiv class=\"youtube-embed-wrapper\"\u003e\n  \u003ciframe width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/oJ9mvrJ1cmI\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"youtube-embed-wrapper\"\u003e\n  \u003ciframe width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/xfOR2nTEJqE\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eVisual Observing and Imaging Ready\u003c\/h2\u003e\n\n\u003cp\u003e\nThe ASKAR 71F is supplied with accessories that allow immediate use for visual observation\nas well as astrophotography. Included are an \u003cstrong\u003e8mm eyepiece\u003c\/strong\u003e (60×),\na \u003cstrong\u003e20mm eyepiece\u003c\/strong\u003e (25×), and a \u003cstrong\u003e1.25\" 45° erecting prism\u003c\/strong\u003e,\nmaking the telescope suitable for terrestrial observation, birdwatching, and landscape viewing.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBoth eyepieces feature standard 1.25\" barrels with rubberised eyecups for comfortable use.\nThe erecting prism provides correctly oriented images, avoiding inverted or mirrored views.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A4.webp\" alt=\"ASKAR 71F supplied visual accessories\"\u003e\n\u003c\/p\u003e\n\n\u003ch2\u003eImaging Connectivity\u003c\/h2\u003e\n\n\u003cp\u003e\nA photographic extension tube is included, offering \u003cstrong\u003eM48×0.75\u003c\/strong\u003e and\n\u003cstrong\u003eM54×0.75\u003c\/strong\u003e adapters, along with a built-in \u003cstrong\u003e2\" filter thread\u003c\/strong\u003e.\nThis allows direct connection to DSLR and dedicated astronomy cameras without additional adapters.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A5.webp\" alt=\"ASKAR 71F imaging adapter and filter thread\"\u003e\n\u003c\/p\u003e\n\n\u003ch2\u003eMechanical Design and Focuser\u003c\/h2\u003e\n\n\u003cp\u003e\nThe ASKAR 71F is manufactured using high-precision CNC machining. Internal surfaces are\ntreated with matte black coating to minimise stray light and internal reflections.\nThe retractable dew shield further improves portability.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe telescope is equipped with a \u003cstrong\u003e2.4\" dual-speed rack-and-pinion focuser\u003c\/strong\u003e,\nfeaturing a 1:10 fine-focus reduction and a \u003cstrong\u003e360° rotatable rear section\u003c\/strong\u003e\nwith engraved scale markings for precise framing and camera orientation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nA finder base slot is integrated into the handle, with additional finder bases on both sides\nof the focuser for flexible accessory mounting.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A6.webp\" alt=\"ASKAR 71F focuser and mechanical construction\"\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A7.webp\" alt=\"ASKAR 71F refractor telescope mounting details\"\u003e\n\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\n\u003ctable cellspacing=\"0\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAperture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e71mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e490mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ef\/6.9\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eObjective\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuadruplet air-spaced APO (one ED element)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImage Circle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGross Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.0kg (with rings \u0026amp; dovetail)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eDiagrams and Technical References\u003c\/h2\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A9.webp\" alt=\"ASKAR 71F product size diagram\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A10.webp\" alt=\"ASKAR 71F connection diagram\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A11.webp\" alt=\"ASKAR 71F locking screw positions\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eEAF Compatibility (Optional)\u003c\/h2\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A12.webp\" alt=\"ASKAR 71F EAF installation diagram\"\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A13.webp\" alt=\"ASKAR 71F electronic focuser mounting\"\u003e\n\u003c\/p\u003e\n\n\u003ch2\u003eOptical Performance\u003c\/h2\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A14.webp\" alt=\"ASKAR 71F optical path diagram\"\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/71F\/askar-71f-quadruplet-flatfield-apochromatic-refractor-telescope-A15.webp\" alt=\"ASKAR 71F spot diagram\"\u003e\n\u003c\/p\u003e\n","brand":"Askar","offers":[{"title":"Default Title","offer_id":44190350377137,"sku":"SHS-ASKR-71F","price":599.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-71f-quadruplet-flatfield-apo-327057.webp?v=1758027026"},{"product_id":"askar-sqa55-55mm-f-4-8-petzval-astrograph","title":"Askar SQA55 55mm f\/4.8 Petzval Astrograph  | Dark Clear Skies","description":"\u003ch2\u003eAskar SQA55 55mm f\/4.8 Petzval Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA55 55mm f\/4.8 Petzval Astrograph\u003c\/strong\u003e is a compact wide-field refractor designed specifically for astrophotography. Featuring a precision \u003cstrong\u003equintuplet air-spaced optical design\u003c\/strong\u003e incorporating both SD and ED glass elements, the Askar SQA55 delivers excellent colour correction and a naturally flat imaging field without the need for an additional field flattener.\u003c\/p\u003e\n\u003cp\u003eWith a \u003cstrong\u003e264mm focal length\u003c\/strong\u003e and fast \u003cstrong\u003ef\/4.8 focal ratio\u003c\/strong\u003e, the Askar SQA55 is well suited for capturing large nebulae, star fields and wide deep-sky objects when paired with modern CMOS astronomy cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Askar SQA55 side view image\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/2c638bd8-1af3-4655-af56-84906c938ada.jpg?v=1772705451\"\u003e\u003c\/p\u003e\n\u003ch2\u003eAdvanced Petzval Optical Design\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA55 uses a \u003cstrong\u003equintuplet Petzval optical configuration\u003c\/strong\u003e that integrates field correction directly into the telescope. This design combines one SD glass element and one ED glass element to minimise chromatic aberration while maintaining excellent contrast and sharp star profiles across the image field.\u003c\/p\u003e\n\u003cp\u003eOn-axis star PSF performance reaches approximately \u003cstrong\u003e2.5 μm\u003c\/strong\u003e, with corner performance around \u003cstrong\u003e4 μm\u003c\/strong\u003e. This ensures tight, round stars across the frame and consistent resolution from centre to edge. The telescope supports a generous \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, making the Askar SQA55 suitable for full-frame astrophotography cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Camera lens with Petzval lens structure on a gray background\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/3367f0f6-5317-4fe6-b8aa-1f44f122a007.jpg?v=1772705453\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSimplified Imaging Setup\u003c\/h2\u003e\n\u003cp\u003eThanks to the Petzval optical architecture, the Askar SQA55 simplifies the imaging setup by eliminating the need for an external field flattener. Optimal performance is achieved with a camera spacing of approximately \u003cstrong\u003e55mm\u003c\/strong\u003e from the rear \u003cstrong\u003eM48×0.75 thread\u003c\/strong\u003e, although a range of \u003cstrong\u003e50–60mm\u003c\/strong\u003e is supported.\u003c\/p\u003e\n\u003cp\u003eThis flexible spacing allows the telescope to integrate easily with filter wheels, rotators and dedicated astronomy cameras used in modern astrophotography systems.\u003c\/p\u003e\n\u003ch2\u003eCompact and Portable Design\u003c\/h2\u003e\n\u003cp\u003eThe optical tube assembly features a removable and reversible lens hood, allowing the telescope to be stored in a more compact configuration for transport. This makes the Askar SQA55 particularly well suited for portable astrophotography setups and travel to dark-sky locations.\u003c\/p\u003e\n\u003cp\u003eThe OTA weighs just \u003cstrong\u003e1.84kg\u003c\/strong\u003e (approximately \u003cstrong\u003e2.18kg including handle and dovetail\u003c\/strong\u003e), making it compatible with a wide range of equatorial tracking mounts.\u003c\/p\u003e\n\u003ch2\u003eWide-Field Astrophotography Performance\u003c\/h2\u003e\n\u003cp\u003eThe short focal length and fast focal ratio make the Askar SQA55 ideal for imaging wide deep-sky targets such as emission nebulae, molecular clouds and large star fields. When paired with modern APS-C or full-frame CMOS cameras, the telescope can capture expansive regions of the night sky in a single frame.\u003c\/p\u003e\n\u003cp\u003eAstrophotographers looking for longer focal lengths may also consider larger models such as the \u003ca href=\"\/products\/askar-sqa106-f-4-8-quintuplet-petzval-apo\"\u003eAskar SQA106\u003c\/a\u003e or the \u003ca href=\"\/products\/askar-80phq-80mm-f-7-5-ed-apo-quadruplet\"\u003eAskar 80PHQ\u003c\/a\u003e, while the \u003ca href=\"\/collections\/askar\"\u003efull range of Askar telescopes\u003c\/a\u003e includes astrographs designed for a variety of astrophotography targets.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Camera lens with filter thread and quick release base position on a gray background\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/153ea354-6820-4ccb-a780-0b0651467419.jpg?v=1772705452\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Camera lens with variable-aperture details on a white background\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/b0d036cd-584a-46f5-8419-af97d2f4c945.jpg?v=1772705452\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAperture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e264mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Design\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuintuplet Petzval APO (SD + ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImage Circle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAperture Blades\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdjustable Aperture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ef\/4.8 – f\/22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClosest Focus Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilter Thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM48×0.75 (with filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Back Focus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55mm (50–60mm supported)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOTA Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.84kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.18kg (with handle and dovetail)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAstrophotography Examples\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"Grid of starry night sky images from different parts of the frame.\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/c2203a57-dbbd-4eaa-9d78-a6fb1922b24f.jpg?v=1772705452\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNGC 7000 – captured with the Askar SQA55 and ZWO ASI6200 camera\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"star shape grid\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/3f7feeb0-0bd4-4921-821b-52d5bcf4fb58.jpg?v=1772705451\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eM20 \u0026amp; M8 – captured with the Askar SQA55 and ZWO ASI2600MC Pro\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"Red and black nebula with star formation, possibly in space.\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/fa1405f3-39a2-492c-a514-56335ce844cc.jpg?v=1772705453\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNGC 6888 – captured with the Askar SQA55 and ZWO ASI2600M\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg alt=\"Glowing nebula with red and blue colors against a starry black background\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-80phq-80mm-f-7.5-ed-apo-quadruplet-apochromatic-astrograph-refractor-telescope-NGC2264.webp?v=1772703957\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eRecommended Camera Pairings\u003c\/h2\u003e\n\u003cp\u003eThe Askar SQA55 pairs exceptionally well with modern cooled astronomy cameras. Many astrophotographers combine this telescope with \u003cstrong\u003ePlayer One Astronomy cameras\u003c\/strong\u003e such as the Poseidon and Neptune series to take advantage of their high sensitivity and low read noise performance.\u003c\/p\u003e\n\u003cp\u003eFor wide-field deep-sky imaging the telescope works particularly well with the \u003cstrong\u003ePlayer One Poseidon-C Pro\u003c\/strong\u003e and \u003cstrong\u003ePlayer One Neptune-C II\u003c\/strong\u003e, delivering excellent colour imaging across the full frame.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44618187473073,"sku":"SQA55","price":795.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sqa55_side_view.webp?v=1758012980"},{"product_id":"askar-sqa55-af-kit","title":"Askar SQA55 AF Kit | Dark Clear Skies","description":"\u003ch1\u003eSQA55 AF Kit – Automatic Focusing for SQA55 Telescope\u003c\/h1\u003e\n\u003cp\u003eThe SQA55 AF Kit is a specially designed astronomical accessory for the SQA55 telescope. This kit is compatible with almost all brands of electronic focusers, enabling automatic focusing. With the SQA55 AF Kit, users can easily adjust focus, improving the precision and efficiency of their astronomical observations.\u003c\/p\u003e\n\u003ch3\u003eInstruction Video \u003ca href=\"https:\/\/www.youtube.com\/watch?v=FsEf-MfAGbg\"\u003eHere\u003c\/a\u003e\n\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eWhat's Included in the SQA55 AF Kit?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThree MXL synchronous belts (different lengths)\u003c\/li\u003e\n\u003cli\u003eOne MXL synchronous pulley\u003c\/li\u003e\n\u003cli\u003eOne tensioner pulley\u003c\/li\u003e\n\u003cli\u003eThree different Allen wrenches\u003c\/li\u003e\n\u003cli\u003eTwo M4*10mm screws\u003c\/li\u003e\n\u003cli\u003eOne M4*14*5mm screw\u003c\/li\u003e\n\u003cli\u003eOne M3*40mm screw\u003c\/li\u003e\n\u003cli\u003eOne M4*6mm screw\u003c\/li\u003e\n\u003cli\u003eTwo M3*10mm screws\u003c\/li\u003e\n\u003cli\u003eTwo M4*12mm screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The SQA55 telescope and all electronic focusers shown in the illustrations are not included in the kit; they are for display purposes only.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eQ: The SQA55 can already be adapted to electronic focusers. What are the advantages of the SQA55 AF Kit?\u003c\/h3\u003e\n\u003ch4\u003eA: Key Benefits of the SQA55 AF Kit\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eMany original adapter plates for electronic focusers are too long, limiting the types of cameras or accessories that can be attached to the telescope. The SQA55 AF Kit features a specially designed adapter plate of the right length, allowing more flexibility in attaching additional accessories.\u003c\/li\u003e\n\u003cli\u003eStandard electronic focuser synchronous belts often have backlash, reducing focusing accuracy. The SQA55 AF Kit includes a tensioner pulley to adjust the synchronous belt to a tight position, which significantly improves focusing precision.\u003c\/li\u003e\n\u003cli\u003eOriginal electronic focuser installation can be cumbersome. The SQA55 AF Kit simplifies assembly and can be mounted in different positions on the SQA55 lens tube, leaving room for additional accessories.\u003c\/li\u003e\n\u003cli\u003eThe SQA55 AF Kit is compatible with nearly all electronic focusers, making it easy to install and use regardless of the focuser brand.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eQ: How do I use the SQA55 AF Kit with an electronic focuser like Pegasus Astro with a larger hole distance?\u003c\/h3\u003e\n\u003cp\u003eA: The SQA55 AF Kit's L-shaped adapter plate has a fully hollow design. To adjust for larger hole distances:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eUnscrew the M4*12 fixing screws.\u003c\/li\u003e\n\u003cli\u003eFlip the L-shaped adapter plate in the desired direction.\u003c\/li\u003e\n\u003cli\u003eAdjust the plate spacing to the correct position.\u003c\/li\u003e\n\u003cli\u003eScrew the M4*12 screws back to secure the plate in place.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eImprove Your Astronomy Experience with the SQA55 AF Kit\u003c\/h2\u003e\n\u003cp\u003eThe SQA55 AF Kit is a must-have accessory for SQA55 telescope owners, providing easy installation and superior focusing accuracy. It works with most electronic focusers and allows for flexible accessory integration, enhancing your astronomical observations.\u003c\/p\u003e\n\u003cdiv class=\"cbox-15 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003ch3 class=\"e_h3-18 s_summary response-transition\"\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3 class=\"e_h3-18 s_summary response-transition\"\u003eProduct introduction\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix response-transition\"\u003e\n\u003cdiv class=\"ce_detail\" data-layout=\"flow\" id=\"ce_detail-292802\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1721784137151\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\" id=\"content_ie-1721784137151-0\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1721784137156\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\" id=\"content_ie-1721784137156-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1721784137161\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/4cf230ee-27a4-4388-a563-1ad93b269881.jpg\" width=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_line\" id=\"ie_line-1721784137411\"\u003e\n\u003cspan\u003e \u003c\/span\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1721784137416\"\u003e\n\u003cp\u003e\u003cspan\u003eThe SQA55 AF Kit is an astronomical accessory specially designed for the SQA55, which can be used with almost all brands of electronic focusers to realize automatic focusing. By using this kit, users can more easily make focus adjustments to their telescopes, thus improving the precision and efficiency of astronomical observations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1721784137421\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1816648687725527040\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/0aa891ed-5d3d-48a5-b44a-8e70fe1173a7.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1721784137426\"\u003e\n\u003cp\u003e\u003cspan\u003eSQA55 AF kit includes many parts:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThree different lengths MXL synchronous belt, one MXL synchronous pulley, one tensioner pulley, three different types Allen wrenches, two M4*10mm screws, one M4*14*5mm screw, one M3*40mm screw, one M4*6mm screw, two M3*10mm screws, two M4*12mm screws.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAttention: The SQA55 and all electronic focusers that appear in the illustrations are not included in this kit and are for display only.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1721784137431\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1816648841822580736\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/da28609d-690d-4728-a0e1-072e84c5e397.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1721784137436\"\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: The SQA55 itself can be adapted to electronic focusers, what are the advantages of the SQA55 AF kit?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA:1. Many original adapter plates of electronic focusers are too long, which limits the type of camera or accessory that can be connected to the back of the telescope when in use. However, the SQA55 AF Kit is specially designed with a special length of adapter plate, which allows the SQA55 to be subsequently connected to any accessory required by the user.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e2. Most of the original electronic focuser synchronous belts will have an unavoidable backlash, thus affecting the focusing accuracy. The SQA55 AF kit with a tensioner pulley can be used to adjust the synchronous belt to a tight state, which improves the focusing accuracy.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e3. Most of the original electronic focuser installation steps are cumbersome. The SQA55 AF kit can be disassembled and assembled as a whole and can be installed in different positions of the SQA55 lens tube to reserve more space for the installation of other required accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e4. The SQA55 AF kit is adapted to almost all electronic focusers; if the user chooses a different brand of electronic focuser, it can be easily installed and used.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eQ: If I use an electronic focuser with a larger hole distance like the one produced by Pegasus Astro, how do I use the SQA55 AF kit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA: The L-shaped adapter plate of the SQA55 AF kit is fully hollow design, just screw down the M4*12 fixing screws, flip the L-shaped adapter plate in the direction, adjust the spacing of the L-shaped adapter plate to a suitable position, and then screw the M4*12 screws on to lock it.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1721784137441\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/dd7ef8b1-0f5a-4572-a19e-a994bd17a31c.jpg\" width=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1721784137446\"\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-15 p_loopItem\" id=\"saf-detail-1\"\u003e\n\u003ch3 class=\"e_h3-18 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix\"\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"70%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1815944716435935232\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460166674\/cms\/image\/54832404-33c3-455d-b509-e3391fac3848.jpg\"\u003e\u003c\/p\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"70%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAF Kit Installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1820342476942454784\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/c5af48c1-563f-47ed-9dd1-9d8fa5c23cf0.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-15 p_loopItem\" id=\"saf-detail-2\"\u003e\n\u003ch3 class=\"e_h3-18 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"70%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1815944716435935232\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460166674\/cms\/image\/54832404-33c3-455d-b509-e3391fac3848.jpg\"\u003e\u003c\/p\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"70%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAF Kit Installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1820342476942454784\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/c5af48c1-563f-47ed-9dd1-9d8fa5c23cf0.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44618197369009,"sku":"askar-af","price":79.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/SQA55EAFkittopview.jpg?v=1726080002"},{"product_id":"askar-v-modular-apo-telescope-v60-v80","title":"Askar V Modular APO Telescope (V60 \u0026 V80) – 270–600mm Dual-Mode Astrograph","description":"\u003ch2\u003eFlexible Astrograph: One Telescope, Six Setups\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/V-askar-v-modular-apo-telescope-with-2-interchangeable-lenses-with-60mm-and-80mm-apertures-and-6-possible-focal-lengths-1-1000x1000w.webp?v=1733336076\" alt=\"Askar V Modular Apochromatic Refractor | Dual-Mode Astrograph – Dark Clear Skies UK\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar V\u003c\/strong\u003e is a modular apochromatic refractor designed for imagers who want maximum versatility without changing telescope. Swap between the \u003cstrong\u003eV60 (60 mm, 360 mm f\/6)\u003c\/strong\u003e and \u003cstrong\u003eV80 (80 mm, 500 mm f\/6.25)\u003c\/strong\u003e objective lenses, then choose the \u003cstrong\u003eReducer\u003c\/strong\u003e, \u003cstrong\u003eFlattener\u003c\/strong\u003e or \u003cstrong\u003eExtender\u003c\/strong\u003e to cover focal lengths from \u003cstrong\u003e270 mm to 600 mm\u003c\/strong\u003e. Perfect for wide-field nebulae, large galaxies and tighter framing of clusters.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/V-askar-v-modular-apo-telescope-with-2-interchangeable-lenses-with-60mm-and-80mm-apertures-and-6-possible-focal-lengths-f-1000x1000w.webp?v=1733336076\" alt=\"Askar V Modular Apochromatic Refractor | Dual-Mode Astrograph – Dark Clear Skies UK\"\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy Choose the Askar V?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix focal length options:\u003c\/strong\u003e 270 \/ 360 \/ 384 \/ 446 \/ 495 \/ 600 mm from a single platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue APO triplet optics:\u003c\/strong\u003e Each objective uses two ED elements for excellent colour correction and tight star profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging-ready connections:\u003c\/strong\u003e M54×0.75 and M48×0.75 rear threads (built-in 2″ filter thread) and a standard \u003cstrong\u003e55 mm backfocus\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotator \u0026amp; visual adapters included:\u003c\/strong\u003e New scaled 360° rotator, finder base, 1.25″ \u0026amp; 2″ adapters for easy framing and visual observing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable build:\u003c\/strong\u003e Approx. \u003cstrong\u003e2.8 kg\u003c\/strong\u003e (V60) and \u003cstrong\u003e3.4 kg\u003c\/strong\u003e (V80). Ideal for travel rigs and quick setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuick Configuration Guide\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eSet the accessory’s scale to match the lens (60 or 80). Maintain 55 mm backfocus from the M48 adapter.\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003cth\u003eAccessory\u003c\/th\u003e\n\u003cth\u003eFocal length\u003c\/th\u003e\n\u003cth\u003eF-ratio\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e60 mm (V60)\u003c\/td\u003e\n\u003ctd\u003eReducer\u003c\/td\u003e\n\u003ctd\u003e270 mm\u003c\/td\u003e\n\u003ctd\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60 mm (V60)\u003c\/td\u003e\n\u003ctd\u003eFlattener\u003c\/td\u003e\n\u003ctd\u003e360 mm\u003c\/td\u003e\n\u003ctd\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60 mm (V60)\u003c\/td\u003e\n\u003ctd\u003eExtender\u003c\/td\u003e\n\u003ctd\u003e446 mm\u003c\/td\u003e\n\u003ctd\u003ef\/7.43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80 mm (V80)\u003c\/td\u003e\n\u003ctd\u003eReducer\u003c\/td\u003e\n\u003ctd\u003e384 mm\u003c\/td\u003e\n\u003ctd\u003ef\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80 mm (V80)\u003c\/td\u003e\n\u003ctd\u003eFlattener\u003c\/td\u003e\n\u003ctd\u003e495 mm\u003c\/td\u003e\n\u003ctd\u003ef\/6.18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80 mm (V80)\u003c\/td\u003e\n\u003ctd\u003eExtender\u003c\/td\u003e\n\u003ctd\u003e600 mm\u003c\/td\u003e\n\u003ctd\u003ef\/7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/V-askar-v-modular-apo-telescope-with-2-interchangeable-lenses-with-60mm-and-80mm-apertures-and-6-possible-focal-lengths-5-1000x1000w.webp?v=1733336076\" alt=\"Askar V Modular Apochromatic Refractor | Dual-Mode Astrograph – Dark Clear Skies UK\"\u003e\u003c\/h3\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ch4\u003eV60 OTA\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAperture: \u003cstrong\u003e60 mm\u003c\/strong\u003e | Focal length: \u003cstrong\u003e360 mm\u003c\/strong\u003e | F-ratio: \u003cstrong\u003ef\/6\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptics: \u003cstrong\u003eTriplet air-spaced APO\u003c\/strong\u003e (two ED elements)\u003c\/li\u003e\n\u003cli\u003eBackfocus reference: \u003cstrong\u003e150 mm\u003c\/strong\u003e from 2″ adapter (focuser retracted)\u003c\/li\u003e\n\u003cli\u003eLength (no accessories): \u003cstrong\u003e318.5 mm\u003c\/strong\u003e | Weight (with rings \u0026amp; dovetail): \u003cstrong\u003e2.8 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRear adapters: \u003cstrong\u003e2″\u003c\/strong\u003e and \u003cstrong\u003e1.25″\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eV80 OTA\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAperture: \u003cstrong\u003e80 mm\u003c\/strong\u003e | Focal length: \u003cstrong\u003e500 mm\u003c\/strong\u003e | F-ratio: \u003cstrong\u003ef\/6.25\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptics: \u003cstrong\u003eTriplet air-spaced APO\u003c\/strong\u003e (two ED elements)\u003c\/li\u003e\n\u003cli\u003eBackfocus reference: \u003cstrong\u003e139.7 mm\u003c\/strong\u003e from 2″ adapter (focuser retracted)\u003c\/li\u003e\n\u003cli\u003eLength (no accessories): \u003cstrong\u003e411 mm\u003c\/strong\u003e | Weight (with rings \u0026amp; dovetail): \u003cstrong\u003e3.4 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRear adapters: \u003cstrong\u003e2″\u003c\/strong\u003e and \u003cstrong\u003e1.25″\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAccessories\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eReducer: \u003cstrong\u003e0.44 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlattener: \u003cstrong\u003e0.48 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtender: \u003cstrong\u003e0.46 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRear threads: \u003cstrong\u003eM54×0.75\u003c\/strong\u003e, \u003cstrong\u003eM48×0.75\u003c\/strong\u003e (built-in 2″ filter thread)\u003c\/li\u003e\n\u003cli\u003eStandard imaging backfocus: \u003cstrong\u003e55 mm\u003c\/strong\u003e (from the M48 adapter)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRotate each accessory to the \u003cstrong\u003e60\u003c\/strong\u003e or \u003cstrong\u003e80\u003c\/strong\u003e scale to match the objective in use.\u003c\/li\u003e\n\u003cli\u003eMaintain \u003cstrong\u003e55 mm\u003c\/strong\u003e backfocus for imaging trains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/V-askar-v-modular-apo-telescope-with-2-interchangeable-lenses-with-60mm-and-80mm-apertures-and-6-possible-focal-lengths-3-1000x1000w.webp?v=1733336076\" alt=\"Askar V Modular Apochromatic Refractor | Dual-Mode Astrograph – Dark Clear Skies UK\"\u003e\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the Askar V suitable for beginners?\u003c\/summary\u003e\n\u003cp\u003eYes. Start wide at 270–360 mm for forgiving tracking and easy framing, then move up to longer focal lengths as you progress.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need extra spacers with the reducer or flattener?\u003c\/summary\u003e\n\u003cp\u003eNo special spacers are required beyond achieving the standard \u003cstrong\u003e55 mm\u003c\/strong\u003e backfocus from the M48 adapter.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich cameras can I use?\u003c\/summary\u003e\n\u003cp\u003eMost dedicated astronomy cameras and DSLR\/mirrorless bodies can connect via M48\/M54. Sensor coverage depends on configuration and camera; many users shoot APS-C comfortably.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use it visually?\u003c\/summary\u003e\n\u003cp\u003eYes. 1.25″ and 2″ adapters are included, and the 360° rotator helps with comfortable viewing angles.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":54837564277112,"sku":"ASKR-V","price":1695.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/V-askar-v-modular-apo-telescope-with-2-interchangeable-lenses-with-60mm-and-80mm-apertures-and-6-possible-focal-lengths-1-1000x1000w.webp?v=1733336076"},{"product_id":"askar-sqa106-f-4-8-quintuplet-petzval-apo","title":"Askar SQA106 f\/4.8 Quintuplet Petzval APO Telescope | Dark Clear Skies","description":"\u003cdiv class=\"cbox-15 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003cstrong\u003eAskar SQA106 – Quintuplet Petzval APO Astrograph\u003c\/strong\u003e\n\u003cp\u003eThe Askar SQA106 f\/4.8 quintuplet Petzval APO is a premium quintuplet Petzval APO astrograph designed for astrophotographers who demand exceptional optical performance. With a 106mm aperture and a fast f\/4.8 focal ratio, the Askar SQA106 f\/4.8 quintuplet Petzval APO delivers sharp, high-contrast images with minimal chromatic aberration, thanks to its advanced optical design incorporating two SD glass elements.\u003c\/p\u003e\n\u003cp\u003eThis high-precision refractor is optimized for both full-frame (44mm) and medium-format (55mm) imaging, ensuring an expansive field of view with excellent edge-to-edge performance. The \u003cstrong\u003ePetzval design\u003c\/strong\u003e means no additional field flattener is required, making it an ideal plug-and-play solution for astrophotography.\u003c\/p\u003e\n\u003ch2\u003e\n\u003cb\u003eAskar SQA106 f\/4.8 quintuplet Petzval APO \u003c\/b\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Optical Design\u003c\/strong\u003e – A five-element Petzval APO configuration minimizes aberrations and provides excellent colour correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Imaging Circle\u003c\/strong\u003e – Natively supports full-frame sensors (44mm), with the ability to upgrade to medium-format (55mm) for even larger coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast and Wide-Field\u003c\/strong\u003e – A focal length of \u003cstrong\u003e509mm\u003c\/strong\u003e and an \u003cstrong\u003ef\/4.8\u003c\/strong\u003e focal ratio make it perfect for capturing deep-sky objects in stunning detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Connectivity\u003c\/strong\u003e – Features M48, M54, and M68 adapters for seamless integration with various imaging setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Focusing\u003c\/strong\u003e – The optional \u003cstrong\u003eelectronic focuser\u003c\/strong\u003e enhances accuracy for long-exposure imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and Portable\u003c\/strong\u003e – The telescope measures \u003cstrong\u003e516mm\u003c\/strong\u003e when retracted and \u003cstrong\u003e586mm\u003c\/strong\u003e when fully extended, making it convenient for transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Build Quality\u003c\/strong\u003e – Weighing \u003cstrong\u003e5.82kg (OTA only)\u003c\/strong\u003e and \u003cstrong\u003e8.12kg\u003c\/strong\u003e with accessories, the SQA106 is engineered for stability and durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n\u003cb\u003eAskar SQA106 f\/4.8 quintuplet Petzval APO \u003c\/b\u003e\u003cstrong\u003ePerfect for Deep-Sky Astrophotography\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eWhether capturing wide-field views of the \u003cstrong\u003eAndromeda Galaxy (M31), nebulae, or intricate star clusters\u003c\/strong\u003e, the \u003cstrong\u003eAskar SQA106\u003c\/strong\u003e ensures stunning image quality with excellent contrast and pinpoint star sharpness across the entire frame.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat’s Included in the Standard Package?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cb\u003eAskar SQA106 f\/4.8 quintuplet Petzval APO\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOxford Cloth Carry Case\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor astro photographers seeking a powerful, high-performance refractor with premium optics and seamless imaging compatibility, the  is a top-tier Askar SQA106 f\/4.8 quintuplet Petzval APO choice.\u003c\/p\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix\"\u003e\n\u003cdiv class=\"ce_detail\" id=\"ce_detail-294504\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1729650104700\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1729650104700-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104705\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1853318784626143232\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/2c4023a2-fb5e-4768-975b-8411ced3c4ac.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104710\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1853318854417068032\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/4ef6aeb5-b815-496a-8d00-f1eaddbbace0.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104740\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/393c43a6-2a4f-488d-a042-79963ff52c1c.jpg\" width=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1730102823747\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1853683291184459776\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/a5ec3c3c-0291-4d96-95c6-f2d830282128.gif\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104760\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1869195685988806656\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/aa0020c5-e1a5-4acb-b550-b453efb05173.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104765\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1869195768688955392\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b13b317c-0986-43bd-9718-baa32f2b02a8.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104770\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/4690120c-cfd6-462f-9f77-723abece10af.jpg\" width=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104775\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1853634172480819200\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/3d169803-b7e2-49ff-bd94-8e872185505d.gif\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1730102893971\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/c5a09177-5d99-4309-a6fd-8086e41b6ff8.jpg\" width=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1730102978860\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1856859904509816832\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/9470ea7b-103d-4a43-8e73-05499ced4b54.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104780\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/6597313d-716c-4088-8cf6-7ed7c0dd2b8a.jpg\" width=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104785\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1851079519088832512\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/5aa05978-041f-4bb4-8a4c-3fc542a35efb.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104790\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1853320545630588928\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/edef5422-701b-4864-bd1e-e4855c2f28f6.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104795\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1851067306658643968\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/e4e0891b-f6f3-477a-b5e9-31d91cb8b9ca.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104800\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/1b1a6002-4b02-424b-9f90-14ab3a49f2ec.jpg\" width=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104805\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1879816727680671744\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/343b6966-51dd-45a0-96b9-5ed74cb90c36.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1729650104810\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1853638337604300800\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/6be33401-75e1-494d-8137-db21b73c5492.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-15 p_loopItem\" id=\"saf-detail-1\"\u003e\n\u003ch3 class=\"e_h3-18 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAperture size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e106mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e509mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ef\/4.8\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eObjective lens\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eQuintuplet petzval APO（including two pieces of SD glass）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eTotal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e516mm(when the dew shield is contracted)\u003cbr\u003e586mm(when the dew shield is stretched)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFormat specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003efull frame（44mm），upgrade to the medium format(55mm)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eOTA weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e5.82kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eGross weight（including tube ring and dovetail plate）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e8.12kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eRear-end thread type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eM48\/M54\/M68 adapters\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eRear-end connection distance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eSupport 48-78mm range (Recommended connection length is 55mm)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eStandard package items\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ea SQA106 OTA, an Oxford cloth case\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1853320709756760064\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/6f41cf15-d4fc-4352-bb42-cc54e225d91f.jpg\"\u003e\u003c\/p\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eThe Locking Screw Position Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1850706039294349312\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/a7f84fb1-47fa-4745-9723-62d65889d53f.jpg\"\u003e\u003c\/p\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cspan style=\"background-color: transparent;\"\u003e\u003cb\u003eAskar SQA106 f\/4.8 quintuplet Petzval APO\u003c\/b\u003e\u003c\/span\u003e\u003cstrong\u003e Electronic Focuser Assembly Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1894274250468974592\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/cbd2a8df-2ff8-40f3-90d7-fe430938f837.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1850706520137748480\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/c04f66fc-ed7a-4d91-b63d-6f1722273494.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-15 p_loopItem\" id=\"saf-detail-2\"\u003e\n\u003ch3 class=\"e_h3-18 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix\"\u003e\n\u003cdiv class=\"video-box\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-15 p_loopItem\" id=\"saf-detail-3\"\u003e\n\u003ch3 class=\"e_h3-18 s_summary\"\u003eAskar SQA106 f\/4.8 quintuplet Petzval APO\u003c\/h3\u003e\n\u003ch3 class=\"e_h3-18 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix response-transition\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cimg id=\"1848959008907894784\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460166674\/cms\/image\/0735a5db-91d6-47dc-a97f-9b4a3cd61137.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eAskar SQA106 f\/4.8 quintuplet Petzval APO\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1850815782858489856\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/51c56665-562a-4e84-8987-c6d73fa1a365.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMr.TianXingZhe  |  ic5146  |  ASKAR SQA106 + ZWO ASI2600MC\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1848959003311529984\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460166674\/cms\/image\/78f6e0e6-1b70-4ce0-bd8a-bbb0575d22ef.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1850815882312605696\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/f791735d-fe92-4785-bf2f-8c4ec911bf09.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDrew Evans  |  M31 Andromeda Galaxy  |  ASKAR SQA106 + 2400mc Pro full frame OSC\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":54952409203064,"sku":"SQA106","price":3395.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/Askar_SQA_106_4.png?v=1758013090"},{"product_id":"askar-sqa70","title":"Askar SQA70 70mm f\/4.8 Quintuplet Astrograph | Dark Clear Skies","description":"\u003c!-- Askar SQA70 – Product Description (Shopify HTML) --\u003e\n\u003cdiv class=\"dcs-product space-y-6\"\u003e\n\u003ch1\u003eAskar SQA70 – Compact Quintuplet Petzval Astrograph\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar SQA70\u003c\/strong\u003e is a fast, wide-field astrograph designed for crisp, flat images across today’s large sensors. Its \u003cstrong\u003equintuplet Petzval\u003c\/strong\u003e optical design (with ED glass) delivers \u003cem\u003etight, colour-pure stars\u003c\/em\u003e to the corners—no separate field flattener required. Lightweight, travel-friendly, and purpose-built for deep-sky imaging.\u003c\/p\u003e\n\u003ch3\u003eWhy astrophotographers love it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast \u0026amp; wide:\u003c\/strong\u003e ~336 mm focal length at around \u003cstrong\u003ef\/4.8\u003c\/strong\u003e for low-noise, wide-field captures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue flat field:\u003c\/strong\u003e Petzval design keeps stars sharp to the edge, ideal for APS-C and \u003cstrong\u003efull-frame\u003c\/strong\u003e sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent colour control:\u003c\/strong\u003e ED elements reduce chromatic aberration for clean, high-contrast data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable build:\u003c\/strong\u003e Compact tube with retractable dew shield; easy to mount and balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging-ready rear end:\u003c\/strong\u003e Robust focuser and common adapter threads for straightforward camera hookup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it’s great for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge nebulae, Milky Way star fields, dark-nebula complexes\u003c\/li\u003e\n\u003cli\u003eWide mosaics and fast survey projects\u003c\/li\u003e\n\u003cli\u003eTravel rigs where size, speed, and field flatness matter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical summary\u003c\/h3\u003e\n\u003ctable role=\"table\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eOptical design\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eQuintuplet Petzval (ED glass, native flat field)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eAperture\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocal length \/ Ratio\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e≈ 336 mm  |  f\/4.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eImage circle\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFull-frame compatible (flat, corrected field)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocuser\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003ePrecision rack-and-pinion, dual-speed (imaging grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eTube length\u003c\/th\u003e\n\u003ctd\u003e \n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eProduct introduction\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"ce_detail\" id=\"ce_detail-296493\" data-layout=\"flow\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1737622455744\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1737622455744-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455749\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/499a9aff-2279-44a2-b9b7-17d623d429f4.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455754\"\u003e\n\u003cdiv\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/cc4f41c4-88c5-4e56-9324-f33223f7d5b0.jpg\" alt=\"长友气体\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a1d9dbbe-4f02-4ff9-9e9c-5f169537ca71.jpg\" alt=\"长友气体\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455804\"\u003e\n\u003cdiv\u003e\n\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/deca2df2-5ba8-462b-8ae9-6a6a2cf8b0f0.jpeg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/98039f22-5e7d-4fbb-b776-64d36773ba35.jpg\" alt=\"长友气体\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6c67541f-2a61-49cf-b314-77ebe0c483ca.gif\" alt=\"长友气体\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455814\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/af7cf5ba-c36c-4ff6-9e49-51642d90a93e.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1738727791424\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/d2e21b98-5d07-43c6-93ae-d75c2e75e208.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455819\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/c2130013-04b9-409f-8a4e-13056dcad7ec.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1738727833582\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1738727833582-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1738727843181\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/6852eaf8-b578-4325-929e-3735c9d91a4f.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_1 p_gridCell\" id=\"content_ie-1738727833582-1\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1738727845779\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4c6275b4-b510-49cc-b07c-9fd81e057cf1.gif\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1738727885648\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d5df7daf-e4b8-4a2a-972e-ee80ec9e5193.gif\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455824\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/12a24f97-00e1-458d-aa3f-3207557522d0.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455829\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/acf4c034-ab6b-4e4f-9e2f-35cc27d98f86.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455834\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/f264430c-d6c6-49f1-9270-c78591c65e6a.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455839\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/ee3d1d2b-bdd5-46da-8b4f-a99ff48ab786.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455844\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/a2406c81-2c79-4c49-a977-fb198d763275.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455849\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/63623c76-aac9-48ef-882e-4154e31dd34c.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1737622455854\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/cbd06f54-fc31-4c00-ba2f-6ab5c39b7841.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-1\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\" colspan=\"3\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAperture size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e70mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e336mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ef\/4.8\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eObjective lens\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eQuintuplet petzval APO（including two pieces of ED glass）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eTotal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e332mm(when the dew shield is contracted)\u003c\/strong\u003e       \u003cbr\u003e\u003cstrong\u003e372mm(when the dew shield is stretched)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFormat specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003efull frame（44mm）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eOTA weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e2.68kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eGross weight（including tube ring and dovetail plate）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e3.5kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eRear-end thread type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eM42\/M48(with M48×0.75 filter thread)\/M54 adapters\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eRear-end connection distance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eSupport 37-68mm range (Recommended connection length is 55mm)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eStandard package items\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ea SQA70 OTA, an Oxford cloth case\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\" colspan=\"3\"\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/8d292646-f919-4112-bd3f-5dd0f2bf88b5.jpg\" alt=\"长友气体\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\" colspan=\"3\"\u003e\u003cstrong\u003eSQA70 Connection Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/62c83762-5d3a-4e2d-89b8-c685b858ddd5.jpg\" alt=\"长友气体\"\u003e\u003c\/figure\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\" colspan=\"3\"\u003e\u003cstrong\u003eThe  Locking Screw Position Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c5de3e75-9421-4e89-84e0-f05312ce3cb8.jpg\" alt=\"长友气体\"\u003e\u003c\/figure\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\" colspan=\"3\"\u003e\u003cstrong\u003eSQA70 Electronic Focuser Assembly Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ecf1a960-561a-4e5e-803a-f96bbd192fc5.jpg\" alt=\"长友气体\"\u003e\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/0e0ab408-fc4e-4bd9-b6fc-98ee34b536a9.jpg\" alt=\"长友气体\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-2\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"video-box\" controlslist=\"nodownload\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/g2OrZKbUPeE?si=zPZSl0ziEdaDIXyW\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-3\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix response-transition\"\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/c3bbe53d-7cb2-4f0d-88c1-1b09057eedda.jpg\" alt=\"长友气体\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eBrandon Boss  |  Andromeda Galaxy (M31)  |  ASKAR SQA70 + ZWO ASI533MC Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1de1cb34-ec83-4d8b-9052-a5940e8144d4.jpg\" alt=\"长友气体\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eSascha Wyss  |  M24 Region  |  ASKAR SQA70 + ZWO ASI2600MC AIR\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4d611550-dd51-409b-8429-1e194e944ece.jpg\" alt=\"长友气体\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003e郑寅杰  |  IC 1805  Heart Nebula  |  ASKAR SQA70 + ZWO ASI 2600MC\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":55279578808696,"sku":"ASKR-SQA70","price":1436.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sqa70sideview.png?v=1758012319"},{"product_id":"askar-phq151-apo-refractor-151-mm-quintuplet-f-7-dark-clear-skies","title":"Askar PHQ151 APO Refractor (151 mm Quintuplet f\/7) – Dark Clear Skies","description":"\u003c!-- Askar PHQ151 – Product Description --\u003e\n\u003cdiv class=\"dcs-product space-y-6\"\u003eThe \u003cstrong\u003eAskar PHQ151\u003c\/strong\u003e is a flagship \u003cstrong\u003e151 mm f\/7 quintuplet APO\u003c\/strong\u003e astrograph built for serious deep-sky imaging. With its \u003cstrong\u003enative flat-field design\u003c\/strong\u003e, this instrument produces \u003cem\u003erazor-sharp stars across full-frame and large-format sensors\u003c\/em\u003e—no flattener required.\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar151phqmountedview.webp?v=1758017008\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHuge aperture:\u003c\/strong\u003e 151 mm of light-gathering power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat field:\u003c\/strong\u003e Petzval-inspired quintuplet design eliminates field curvature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal length:\u003c\/strong\u003e 1057 mm at \u003cstrong\u003ef\/7\u003c\/strong\u003e, perfect for galaxies and smaller nebulae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperb colour correction:\u003c\/strong\u003e Multiple ED elements for chromatic control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty focuser:\u003c\/strong\u003e Large 4″ rack-and-pinion for heavy imaging trains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust build:\u003c\/strong\u003e Precision CNC machining with retractable dew shield.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical summary\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\" role=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eOptical design\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eQuintuplet APO with flat field\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eAperture\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e151 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocal length\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e1057 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocal ratio\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eImage circle\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFull-frame \u0026amp; large-format compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocuser\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e4″ rack-and-pinion, dual-speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eWeight (OTA)\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e~15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eIncluded\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eOTA, rings, dovetail, adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBest for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdvanced astrophotographers using full-frame or large-format sensors\u003c\/li\u003e\n\u003cli\u003eTargets requiring high resolution: galaxies, globular clusters, small nebulae\u003c\/li\u003e\n\u003cli\u003ePermanent observatories and serious imaging rigs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eProduct introduction\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"ce_detail\" data-layout=\"flow\" id=\"ce_detail-278572\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1676940812372\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1676940812372-0\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1676940812377\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1676940812377-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1676940812382\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/98c37934-096a-485e-9e5f-3aa0692db920.jpg\" width=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_line\" id=\"ie_line-1676940812627\"\u003e\n\u003cspan\u003e \u003c\/span\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1676940812632\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003e151PHQ is a long-focal-ratio, flatfield astrograph newly launched after 130PHQ and also the biggest refractor of Sharpstar products till now. Instead of buying extra flatteners, calculating the backfocus of the flattener, or making a tedious connection to match the distance, astrophotographers can simply equip it with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e151PHQ has a focal ratio of f\/7 and a focal length of 1057mm. The aperture is 151mm, which is the largest of Askar refractors so far. The quadruplet lens with two ED glasses offers excellent control of chromatic and other aberrations. With its self-flattening design, 151PHQ offers strong advantages in the astronomical shooting. It supports a medium frame 60mm image circle, has a fine spot diagram with tiny distortion of the peripheral stars, and its central RMS radius is less than 2 microns.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e151PHQ comes with a telescopic lens hood, a high-quality CNC machined and painted tube, and attractive decorative parts. The 3.4\" R\u0026amp;P focuser comes with M68\/M54\/M48 adapters, 360°rotator and a finder base. When used with the 3\" 0.7 x flat field reducer, the telescope can reach a focal ratio of f\/4.9 and a focal length of 740mm, effectively reducing exposure time. The multifunctional handle comes with a central slot for attaching an M6 screw with an M6 screw hole. A standard 300mm Losmandy dovetail plate, together with a sturdy double tube ring, is perfectly suited for viewing and shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1676940812637\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/307bc671-7fa9-46c6-b166-de2be86ef2b9.jpg\" width=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1676940812642\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/b9152fea-5a54-4b65-beaf-6cfc05717813.jpg\" width=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-1\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003e151PHQ Illustrate in detail\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAperture size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e151mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e1057mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ef\/7\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eObjective lens\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eQuadruplet air-spaced APO (including two ED glass) \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eImage circle\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e60mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum accessory connection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e(with the focuser fully retreated)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eImaging mode：\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e78mm（from the base of M48×0.75 male thread）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eObserving mode ：\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e119mm （from the end of1.25\" eyepiece holder）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eTotal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eObserving mode：930.3mm（with the dew shield contracted）1117.8mm（with the dew shield fully stretched）\u003cbr\u003eImaging mode：976.8mm（with the dew shield contracted）1164.3mm（with the dew shield fully stretched）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eOTA Weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e11.6kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eTotal Weight (Including tube ring\u0026amp;dovetail plate）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e13.7kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eRear-end thread type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eM86×1-M68×1    \u003cbr\u003eM68×1-M54×0.75    \u003cbr\u003eM54×0.75-M54×0.75 \u003cbr\u003eM54×0.75-M48×0.75（built-in M48×0.75 filter thread）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFour-piece photographic end adapter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eM48×0.75\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eStandard package items\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eAn 151PHQ OTA，a pair of tube rings, a handle, an Askar losmandy 300mm dovetail plate, a set of 4-piece photographic adapters, an aluminum box，a manual\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1627845938779987968\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/28082a52-4b55-4374-8169-9ff7b600ac92.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-2\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"video-box\" controlslist=\"nodownload\"\u003e\u003ciframe height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/8CLXf4h9eT4\" title=\"YouTube video player\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-3\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix response-transition\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cimg id=\"1627846496017199104\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/4d2789a9-0bee-4ddd-895e-e63c386c9c78.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMr.ZhuLiQun     |     Rosette Nebula     |     ASKAR 151PHQ+ASI 6200     |     SHO 3.5hrs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstrong\u003e\u003cstrong\u003e\u003c!-- FAQ Schema --\u003e \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"@id\": \"{{ shop.url }}{{ product.url }}#faq\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Does the PHQ151 require a separate field flattener?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"No. The PHQ151 has a built-in flat-field design suitable for full-frame and large-format imaging sensors.\" }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What is the focal length and ratio of the PHQ151?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"It has a focal length of 1057 mm and operates at f\/7.\" }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Is the PHQ151 portable?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"At around 15 kg, it is best suited for permanent setups or heavy-duty mounts rather than lightweight travel rigs.\" }\n      }\n    ]\n  }\n  \u003c\/script\u003e \u003c\/strong\u003e\u003c\/strong\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":55279645393272,"sku":"ASKAR-151PHQ","price":4399.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar151phqsideview.webp?v=1758017008"},{"product_id":"askar-60f-apo-astrograph","title":"Askar 60F APO Astrograph (60 mm f\/5) – Portable Wide-Field Telescope | Dark Clear Skies","description":"\u003c!-- Askar 60F – Product Description --\u003e\n\u003cdiv class=\"dcs-product space-y-6\"\u003e\n\u003ch2\u003eAskar 60F – Portable APO Astrograph with Reducer\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar 60F\u003c\/strong\u003e is a compact, portable \u003cstrong\u003eapochromatic refractor\u003c\/strong\u003e designed for astrophotographers who want sharp, wide-field images in a highly travel-friendly package. Built on the popular FRA (Flatfield Refractive Astrograph) series design, the 60F offers a \u003cem\u003eflat field, excellent colour correction, and easy setup\u003c\/em\u003e for both beginners and experienced imagers.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture:\u003c\/strong\u003e 60 mm APO optics with ED glass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal length:\u003c\/strong\u003e 300 mm (native) – reduced further with the optional 0.8× reducer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal ratio:\u003c\/strong\u003e f\/5 native (f\/4 with reducer), ideal for fast imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat field design:\u003c\/strong\u003e Stars remain tight across APS-C and full-frame sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight:\u003c\/strong\u003e Small OTA weighing just ~2 kg, perfect for portable setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging ready:\u003c\/strong\u003e 2″ focuser with adapters for easy camera connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical summary\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\" role=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eOptical design\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eAPO refractor with built-in field correction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eAperture\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocal length\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e300 mm (240 mm with reducer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocal ratio\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003ef\/5 native, f\/4 with reducer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eImage circle\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eUp to full-frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocuser\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e2″ rack-and-pinion, dual-speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eOTA weight\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e~2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eIncluded\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eOTA, rings, dovetail bar, camera adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBest for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide-field astrophotography (Milky Way, large nebulae, star clusters)\u003c\/li\u003e\n\u003cli\u003eBeginner-friendly imaging setups with small equatorial mounts\u003c\/li\u003e\n\u003cli\u003ePortable rigs for travel or grab-and-go astrophotography\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- FAQ Schema --\u003e \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"@id\": \"{{ shop.url }}{{ product.url }}#faq\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Does the Askar 60F need a separate field flattener?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"No. The 60F has a built-in flat-field design, though an optional 0.8× reducer can make it even faster.\" }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Is the Askar 60F suitable for full-frame cameras?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"Yes, the 60F provides a corrected field that supports full-frame imaging sensors.\" }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What is the weight of the OTA?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"The optical tube weighs around 2 kg, making it ideal for lightweight and portable setups.\" }\n      }\n    ]\n  }\n  \u003c\/script\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv id=\"saf-detail-0\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eProduct introduction\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv id=\"ce_detail-299795\" data-layout=\"flow\" class=\"ce_detail\"\u003e\n\u003cdiv id=\"ie_grid-1752220603774\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1752220603774-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1752220603779\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1752220603779-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1752220603784\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/dfa8bbf2-0d0b-4b9b-88d9-eb01af2debd4.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_grid-1752220788502\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1752220788502-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1752220791966\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1752220791966-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1752220791968\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1752220791968-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1752220791971\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1752220791971-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1752220791973\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1752220791973-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1752220791976\" class=\"ie_fimg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_line-1752220604034\" class=\"ie_line\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1752220604039\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 60F is an OTA with an aperture of 60 mm, a focal length of 408mm, and a native focal ratio of F6.8, designed for astronomy enthusiasts who prioritize portability and high image quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 60F features a quadruplet optical lens design (three front elements and one rear element), including one piece of ED glass， which can effectively reduce chromatic aberration. The Askar 60F supports 44mm full-frame imaging with great performance of the surrounding star points. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1752815427994\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\n\u003cimg alt=\"长友气体\" width=\"100%\" height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/1eb920d1-fcfb-45b1-b5cc-46c71dd25832.jpg\"\u003e\u003cspan\u003eWith its built-in field flattener, the Askar 60F eliminates the need for an additional flattener and complex back-focus calculations. Simply attach your camera, achieve focus, and you’re ready to capture images, making astrophotography simpler and more enjoyable.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_grid-1755588304495\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1755588304495-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1755588304497\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/d9b88bb2-8f8c-4aa1-b590-2da36867759a.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"content_ie-1755588304495-1\" class=\"e_box e_box-000 d_gridCell_1 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1755588304499\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/55a29dc8-b27d-4d44-a5d0-4fcb282f0d0c.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"content_ie-1755588304495-2\" class=\"e_box e_box-000 d_gridCell_2 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1755588304500\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/621daa2b-86a6-4a17-9ff5-1eb9a94c69a7.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1752220604049\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 60F OTA weighs only 2.5kg, and the gross weight is 3kg (including the tube rings and dovetail plate). It is compact and lightweight, making it easy to carry for observing or astrophotography—wherever your exploration takes you.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 60F is designed for both visual observation and photography. It comes with a photographic extension tube featuring a built-in 2\" filter thread and has M48×0.75 and M54×0.75 adapters, making it compatible with DSLRs and astronomical cameras for quick connection and instant shooting. \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1752815480241\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/bfd92ab9-f018-4bba-a1e7-486c93ca205c.jpg\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eThe mechanical design of the Askar 60F minimizes hidden usage costs and ensures a smooth experience.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 60F features a retractable dew shield, further reducing overall length and enhancing portability. The inside of the tube is pasted with matting felt to eliminate stray light better, while the exterior sports a sleek blue-and-white colour scheme with high-quality CNC machining and paint finish.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOn the handle bar of Askar 60F, it has a finder base slot. Besides, there are two finder bases on both sides of the focuser, which not only eliminates the need for disassembling when changing the position of the finder scope but also provides additional mounting positions for other astronomical accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn terms of the focuser, the Askar 60F is equipped with a dual-speed R\u0026amp;P 2.4-inch rigid focuser, offering 1:10 fine-tuning. The fine adjustment knob has an anti-slip cover, and the rear features a 360° scale rotator for precise angle adjustment.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe dovetail plate is a 230mm standard Vixen-style plate, with 1\/4\" and 3\/8\" screw holes, allowing direct connection to a tripod.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOffering professional-grade performance at an entry-level price, the Askar 60F is your ideal companion for exploring the cosmos and capturing nature’s beauty. Travel light, discover more—start your journey with Askar 60F!\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1752815535020\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/f9e5b5ae-a6bb-4b98-8fb4-4d2bd3396bf2.jpg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1752220604089\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\n\u003cimg alt=\"长友气体\" width=\"100%\" height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1d1ee564-86ed-4386-a4fd-d0163321c49c.jpeg\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/0961e67a-596f-472f-a118-2d9b70fdce14.jpg\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-1\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable class=\"ck-table-resized\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\" class=\"responsive-title\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAperture size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e60mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e408mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003ef\/6.8\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eObjective lens\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eQuadruplet air-spaced APO(including one ED glass)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImage circle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e44mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum accessory connection (with the focuser fully retreated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eImaging mode: \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e81mm (from the base of M48×0.75 male thread） \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e99mm（from the base of M54×0.75 male thread)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eObserving mode: \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e120mm（from the end of 1.25\" eyepiece holder） \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e130mm（from the end of 2\" eyepiece holder）\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum accessory connection (with the focuser fully extended)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eImaging mode: \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e31mm (from the base of M48×0.75 male thread） \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e49mm（from the base of M54×0.75 male thread)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eObserving mode: \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e70mm（from the end of 1.25\" eyepiece holder） \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e80mm（from the end of 2\" eyepiece holder）\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cstrong\u003e289mm(including 1.25\" adapter as dew shield contracted） \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e323mm(including 1.25\" adapter as dew shield fully stretched） \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e336mm(including the photographic adapter as dew shield contracted） \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e369mm(including the photographic adapter as dew shield fully stretched）\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocuser travel length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e50mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e2.36kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGross weight (Including tube ring\u0026amp;dovetail plate)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e2.86kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear-end thread type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cstrong\u003eM64×0.75-M54×0.75 \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003eM54×0.75-M54×0.75 \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003eM54×0.75-M48×0.75  (with M48×0.75 filter thread)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard package items\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e A 60F OTA，a pair of tube rings, a handle, a mm Vixen dovetail plate,a set of photographic adapters\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4da5ff7b-ecc0-4710-8946-ed19031fbba6.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003e60F Connection Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3a4ccbd6-82bd-426b-a686-67e2262fa975.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eThe Locking Screw Position Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a859e8f9-aad8-44ea-97e7-b667b77bb291.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eElectronic Focuser Assembly Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ba0e401b-24ed-4669-a3e2-00786aa1f7ef.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eOptical Path Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4e404fdd-a0cd-4dee-94a8-dd323ee7b67b.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eSpot Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ce20716a-504a-4d0b-8479-0b5157d2bf41.jpg\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-2\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv controlslist=\"nodownload\" class=\"video-box\"\u003e\u003ciframe width=\"560\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/xOv6gQuOnjo?si=i_hwjn9uEo7hG6D4\" height=\"315\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-3\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix response-transition\"\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ba3a7ae5-cf89-4b02-9b98-d7743d71f0d5.jpg\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eM8+M20   |  ASKAR 60F + ZWO ASI 2600MC\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":55279678095736,"sku":"Askar 60F","price":498.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar60fsideview.png?v=1758027322"},{"product_id":"askar-91f-flat-field-apo","title":"Askar 91F APO Refractor (91 mm f\/5.6 Flat-Field) – Dark Clear Skies","description":"\u003c!-- Askar 91F – Product Description --\u003e\n\u003cdiv class=\"dcs-product space-y-6\"\u003e\n\u003ch2\u003eAskar 91F – Flat-Field APO Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAskar 91F\u003c\/strong\u003e is a powerful \u003cstrong\u003e91 mm f\/5.6 flat-field apochromatic refractor\u003c\/strong\u003e designed for deep-sky astrophotography. With its \u003cstrong\u003eFRA-series Petzval optical design\u003c\/strong\u003e, the 91F delivers a native flat field and \u003cem\u003epinpoint stars across APS-C and full-frame sensors\u003c\/em\u003e without needing an additional field flattener.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture:\u003c\/strong\u003e 91 mm APO optics with ED glass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal length:\u003c\/strong\u003e 500 mm at f\/5.6 – balanced between wide field and resolution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat field design:\u003c\/strong\u003e Petzval quintuplet optics provide sharp stars edge-to-edge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-frame coverage:\u003c\/strong\u003e Generous image circle supports modern large-format sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSturdy build:\u003c\/strong\u003e CNC-machined tube with retractable dew shield.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision focuser:\u003c\/strong\u003e 3.5″ rack-and-pinion, dual-speed focuser for heavy imaging trains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical summary\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\" role=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eOptical design\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eQuintuplet APO (Petzval, native flat field)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eAperture\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e91 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocal length\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e500 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocal ratio\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003ef\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eImage circle\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFull-frame compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eFocuser\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e3.5″ rack-and-pinion, dual-speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eWeight (OTA)\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003e~6.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eIncluded\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border-bottom: 1px solid #e5e7eb;\"\u003eOTA, tube rings, dovetail, adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBest for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide-field astrophotography with added reach (galaxies, nebulae, clusters)\u003c\/li\u003e\n\u003cli\u003eFull-frame and APS-C imaging with flat, corrected fields\u003c\/li\u003e\n\u003cli\u003eAstrophotographers seeking balance between portability and aperture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- FAQ Schema --\u003e \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"@id\": \"{{ shop.url }}{{ product.url }}#faq\",\n    \"mainEntity\": [\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Does the Askar 91F require a separate field flattener?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"No. The 91F is a Petzval flat-field design that delivers a corrected image without additional accessories.\" }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"What is the focal length of the Askar 91F?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"The telescope has a 500 mm focal length with a focal ratio of f\/5.6.\" }\n      },\n      {\n        \"@type\": \"Question\",\n        \"name\": \"Is the 91F suitable for full-frame sensors?\",\n        \"acceptedAnswer\": { \"@type\": \"Answer\", \"text\": \"Yes. The 91F provides a flat, corrected image circle large enough for full-frame sensors.\" }\n      }\n    ]\n  }\n  \u003c\/script\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv id=\"saf-detail-0\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eProduct introduction\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv id=\"ce_detail-299215\" data-layout=\"flow\" class=\"ce_detail\"\u003e\n\u003cdiv id=\"ie_grid-1749608478301\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608478301-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1749608478306\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608478306-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1749608478311\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/a3df0069-a893-4f9b-b959-77540ba5aeb6.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_grid-1749608478316\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608478316-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1749608478321\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608478321-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1749608478326\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608478326-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1749608478331\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608478331-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1749608478336\" class=\"ie_fimg\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_grid-1749608700397\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608700397-1\" class=\"e_box e_box-000 d_gridCell_1 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1749608700400\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608700400-2\" class=\"e_box e_box-000 d_gridCell_2 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1749608700412\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1749608700412-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_text-1749608700416\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_line-1749608478561\" class=\"ie_line\"\u003e\u003cspan\u003eThe Askar 91F is an OTA with an aperture of 91mm, a focal length of 609mm, and a native focal ratio of F6.7.  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1749608478566\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe optical design of the Askar 91F features a four-element configuration (three elements in the front and one in the rear), including one piece of ED glass， which can effectively reduce chromatic aboration. The Askar 91F supports 44mm full-frame imaging with great performance of the surrounding star points.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 91F is a self-flattened design that allows users to avoid calculating the back focus and buying additional flatteners. After attaching the imaging accessories, users can directly use it for shooting after the OTA is in focus. This further reduces the cost and improves the pleasure of shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_grid-1755656783837\" class=\"ie_grid\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv id=\"content_ie-1755656783837-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1755656783839\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/4624e4d6-959a-4a4a-aca6-9c125f648079.JPG\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1755656783843\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eASTROPHOTOGRAPHY\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"content_ie-1755656783837-1\" class=\"e_box e_box-000 d_gridCell_1 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1755656783841\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/45ab158c-d6d7-4dd5-a471-b2ca493eb494.JPG\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1755656783844\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eDAILY PHOTOGRAPHY\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"content_ie-1755656783837-2\" class=\"e_box e_box-000 d_gridCell_2 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1755656783842\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/53f60f3f-4311-4043-89e6-102b6d476d58.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1755656783845\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eVISUAL OBSERVATION\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1749608478591\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/b8f20973-5d5c-4493-975a-e06d05b020df.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1749608478596\" class=\"reset_style\"\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1749608478601\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 91F strikes a balance between practicality and versatility while achieving lightweight portability through its compact design.The OTA weighs just 3.92kg, with a gross weight of 4.52kg (including the tube rings and dovetail plate).  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 91F is versatile in its use, allowing for both visual observation and astrophotography.     For user convenience, it comes standard with three visual accessories: an 8mm eyepiece, a 20mm eyepiece, and a 1.25-inch erecting prism.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1749608478606\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/3abcc63f-9690-4a70-ae61-dcdaec24c590.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1749608478611\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe 8mm eyepiece has a magnification of 76x and the 20mm eyepiece has a magnification of 30x.The Askar 91F can be used with different eyepieces depending on the target, and both eyepieces are ideal for viewing birds and landscapes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1749608478616\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/d60045b0-2ff2-4e43-9fbe-8740e10fd73e.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1749608847012\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eBoth eyepieces are 1.25 inches and have a soft rubberized top for comfortable use.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 1.25-inch erecting prism provides correct left-to-right and down-to-up image views, making users easy for you to conduct terrestrial and astronomical observations without the hassle of seeing images reversed up, down, left, and right.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1749608478626\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/b036cb1a-693f-4a79-88ad-0ec7247137c2.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1749608933068\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 91F also comes standard with a photographic extension tube with a built-in 2-inch filter thread for easy shooting connections, providing M48×0.75 \u0026amp; M54×0.75 adapters to accommodate various DSLR cameras and professional astronomical cameras, meeting diverse imaging needs.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cvideo playsinline=\"\" muted=\"\" loop=\"loop\" autoplay=\"autoplay\"\u003e\u003c\/video\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1749797695296\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe mechanical design of the Askar 91F itself adheres to Askar's consistent philosophy of taking into account the user's habits and minimizing the user's invisible costs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 91F features a retractable dew shield, further reducing overall length and enhancing portability.The inside of the tube is pasted with matting felt to better eliminate stray light, while the exterior sports a sleek blue-and-white color scheme with high-quality CNC machining and paint finish.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Askar 91F’s handle is 130mm long and has a finder base slot. Besides, there are two finder bases on both sides of the focuser, which not only eliminates the need for disassembling when changing the position of the finder scope but also provides additional mounting positions for other astronomical accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn terms of the focuser, the Askar 91F is equipped with a dual-speed R\u0026amp;P 3-inch rigid focuser, which has a 1:10 fine adjustment and a 360° scaled rotator at the rear end for precise angle adjustment.The 230mm Vixen-style dovetail plate includes 1\/4\" and 3\/8\" screw holes for direct tripod mounting.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1749797719616\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/45be5f3f-49d0-47af-9dd9-e3be0d6c9057.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1749608990776\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe rear interface of the Askar 91F includes both 2-inch and 1.25-inch adapters, enabling compatibility with a wide range of astronomical accessories.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhether for deep-sky astrophotography, planetary observation, or birdwatching and travel, the 91F is your ideal companion for exploring the world.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1755592664590\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/4e1e8fa8-f15f-4591-a1ca-c2906621e6a5.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1749609005269\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg alt=\"长友气体\" width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/515a5a93-2bfd-4c0e-ac15-1442805daa1c.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-1\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable class=\"ck-table-resized\"\u003e\n\u003ccolgroup\u003e\n\u003ccol\u003e\n\u003ccol\u003e\n\u003ccol\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\" class=\"responsive-title\"\u003e\u003cstrong\u003eParameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAperture size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e91mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e609mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003ef\/6.7\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eObjective lens\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eQuadruplet air-spaced APO(including one ED glass)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImage circle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e44mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum accessory connection (with the focuser fully retreated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eImaging mode: \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e75mm (from the base of M48×0.75 male thread）\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e93mm（from the base of M54×0.75 male thread)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eObserving mode: \u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e112mm（from the end of 1.25\" eyepiece holder）\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e122mm（from the end of 2\" eyepiece holder）\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMinimum accessory connection (with the focuser fully extended)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eImaging mode: \u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e45mm (from the base of M48×0.75 male thread）\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e63mm（from the base of M54×0.75 male thread)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eObserving mode: \u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e82mm（from the end of 1.25\" eyepiece holder）\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e92mm（from the end of 2\" eyepiece holder）\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cstrong\u003e513mm(including 1.25\" adapter as dew shield contracted）\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e599mm(including 1.25\" adapter as dew shield fully stretched）\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e550mm(including the photographic adapter as dew shield contracted）\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e636mm(including the photographic adapter as dew shield fully stretched）\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocuser travel length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e30mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e3.92kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGross weight (Including tube ring\u0026amp;dovetail plate)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e4.52kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear-end thread type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cstrong\u003eM64×1-M54×0.75       \u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003eM54×0.75-M54×0.75       \u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003eM54×0.75-M48×0.75  (with M48×0.75 filter thread)\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard package items\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003e A 91F OTA，a pair of tube rings, a handle, a 230mm Vixen dovetail plate,a set of photographic adapters, a 1.25-inch erecting prism, an 8mm eyepiece, a 20mm eyepiece\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/6d3433e9-069f-4e8f-8fe5-f64659c95b6e.jpg\"\u003e\u003c\/figure\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003e91F Connection Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/d8b7fe34-d5d0-4555-bbc9-ead405dfacf2.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eThe Locking Screw Position Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/37f4ab88-3b9a-4c66-88f2-1674920272bb.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eElectronic Focuser Assembly Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/1acc5643-0b25-4789-a1b5-11c889ba55e2.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eOptical Path Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/fabf66d1-bbc7-47d2-95d9-13cbfcf8d59e.jpg\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"responsive-title\"\u003e\u003cstrong\u003eSpot Diagram\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/9204b293-5dea-45bd-a45d-91db45661241.jpg\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-2\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv controlslist=\"nodownload\" class=\"video-box\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/qn-tNoQ6v60?si=T-66YY_w4m2-EUNq\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"saf-detail-3\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix response-transition\"\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b5f6d47e-bc5a-42e3-bf8a-da1e5312b953.jpg\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eNGC281  |  张宇航  |  Askar 91F Flat-Field + ZWO ASI2600MC\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/aa472e92-cdc4-42e5-abc2-11effb6bf352.jpg\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eNGC7293  |  张宇航  |  Askar 91F Flat-Field + ZWO ASI2600MC\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg alt=\"长友气体\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/bf5f815c-b3ec-47c2-9a98-7de9df824319.jpg\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eGyulbudaghian's Nebula  |  Nico Carver  |  Askar 91F + ZWO ASI2600MC Air\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":55279709716856,"sku":"Askar 91F","price":995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/Askar91fSideView.png?v=1758020074"},{"product_id":"askar-fra300-pro-apo-astrograph","title":"Askar FRA300 Pro APO Astrograph - Dark Clear Skies","description":"\u003cp\u003e\u003cstrong\u003eAskar FRA300 Pro APO Astrograph\u003c\/strong\u003e is a compact, widefield astrograph designed for serious deep-sky imaging. Its native Petzval quintuplet objective delivers a naturally flat field across a full-frame sensor, so you do not need a separate field flattener.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eQuintuplet APO with ED glass for excellent color correction\u003c\/li\u003e\n\u003cli\u003eFocal length: 300 mm (f\/5) for fast, widefield imaging\u003c\/li\u003e\n\u003cli\u003eNative flat field supporting a 44 mm full-frame image circle\u003c\/li\u003e\n\u003cli\u003eRobust focuser with precise adjustment for heavy imaging trains\u003c\/li\u003e\n\u003cli\u003eGreat for large nebulae, star fields, and mosaics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eQuintuplet APO, native Petzval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length\u003c\/td\u003e\n\u003ctd\u003e300 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage circle\u003c\/td\u003e\n\u003ctd\u003e44 mm (full frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUse\u003c\/td\u003e\n\u003ctd\u003eAstrophotography \/ Widefield imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat makes it different?\u003c\/h3\u003e\n\u003cp\u003eThe FRA series uses a Petzval layout where the rear elements correct the field, producing a flat, sharp image without extra reducers or flatteners. This simplifies spacing and improves reliability for mobile rigs.\u003c\/p\u003e\n\u003ch3\u003eIdeal targets\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge emission and reflection nebulae\u003c\/li\u003e\n\u003cli\u003eWide star fields and dark nebulae\u003c\/li\u003e\n\u003cli\u003eLarge open clusters and Milky Way panoramas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eProduct introduction\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"ce_detail\" data-layout=\"flow\" id=\"ce_detail-276018\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1669622228255\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1669622228255-0\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1669622228260\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1669622228260-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1669622228265\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/f4199a3e-8de9-4505-893a-bdb690546ea3.jpg\" width=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1670289241184\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eSince their inception,Askar FRA serious short focal ratio astrograph have been very well received by astronomical amateurs.This year, we launch the FRA300 Pro--the smallest 60mm F\/5 Petzval astrograph with the fastest native focal ratio in the FRA series so far,it's focal length is 300mm.The star is sharp and delicate.At the center of its field of view, the RMS radius can reach 2um. Even a serious user can also be satisfied when it comes to the shape of stars.It performance excellent with full-frame and supports 44mm imaging,is a rare astrograph for amateur astronomers.Compared with F\/6 or F\/7，F\/5 can effectively reduce the exposure time,helps you get the same exposure in less time.In addition, the entire OTA is compact, making it the portable choice for field photographers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFRA300 Pro 's objective lens adopts a quintuplet fully air-spaced structure, including one piece of ED glass,it also adopts a fully-multi-coating to effectively remove stray light.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn particular, the rear group lens adopts the two pieces of far-separated refractive lenses, which improves both the star quality and the aberration correction performance , and has a very good control of full-frame peripheral light reduction.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThanks to the native Petzval design, the user does not need to calculate the backfocus, as long as the focus is within a certain range is the optimal position.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMechanically，FRA300 Pro is assembled with high-quality CNC-machined components , wrapped with smooth spray coating and light oxidation process,both beautiful and practical.The tube ring design is equally lightweight and stylish.Despite the increased cost, we want enthusiasts to use the FRA300 Pro that perform well in every way and are considered in every detail.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe focuser is 2.5\"rack-and-pinion focuser, which is solid and beautiful.It's designed with dual-speed hand knobs, twin knobs for coarse adjustment and a fine adjustment knob to accurate the focus, equipped with a universal M48X0.75 thread adapter. There are also two separate M54X0.75 and M42X0.75 adapters in the standard kit for easy access to a variety of imaging equipment and accessories. The end is equipped with a 360° rotator, which is convenient for users to rotate at any angle when shooting. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFRA300 Pro also comes standard with a multi-function handle and a 300mm vixen-style dovetail plate, which can be directly connected to various mounts and accessories, the multi-functional handle can also be connected to the universal vixen-style finder base.The 300mm dovetail plate allows the astrograph to maintain balance on the mount.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003eFRA300Pro, as the first Pro version launched by Askar, goes further on the good reputation of the original FRA series, with amazing shooting performance, convenient carrying and using experience，will become your best astrophotography assistant at a cost effective price.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1669622228535\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/c26712ae-aade-4751-b2d5-8ad2bcf23df9.jpg\" width=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-1\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eFRA300PRO\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAperture\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e60mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e300mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ef\/5\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eObjective type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eQuintuplet fully air-spaced Petzval APO (including one ED glass)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eImage circle\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e44mm full-frame\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum accessory connection (with the focuser fully retreated)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e 1. Imaging mode:\u003cbr\u003e71mm (from the base of M42×0.75 male thread)\u003cbr\u003e67mm (from the base of M48×0.75 male thread)\u003cbr\u003e71mm (from the base of M54×1male thread)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eTotal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e303mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eOTA Weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e2.26kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eTotal Weight (Including tube ring\u0026amp;dovetail plate）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e3.12kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eRear-end thread \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eM48*0.75 male thread\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eStandard package items\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ea tube ring, a handle, an Askar 300mm Vixen dovetail plate, a M54*0.75 adapters, a M42*0.75 adapters, a warranty，a manual\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/9b9cb75a-11e2-4c23-987e-86983b4870d0.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-2\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"ckeditor-html5-video\"\u003e\u003cvideo controls=\"controls\" id=\"1596073208241139712\" src=\"https:\/\/omo-oss-video.thefastvideo.com\/portal-saas\/new2022072923460240318\/cms\/vedio\/d63a2ae7-9ecc-4b03-a15b-b8f3ae5115a8.mp4\"\u003e\u003c\/video\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-3\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cimg id=\"1938428934771318784\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ada711e4-6c05-4848-af04-f7f412e61940.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eImran Badr  | NGC 7822  | Askar FRA300 Pro+ ZWO ASI2600MM Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1935571318929235968\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/faf17be3-dbf5-43da-9c78-db58fce3f720.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eImran Badr  | Andromeda galaxy  | Askar FRA300 Pro+ ZWO ASI2600MC·MM Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1914603066368270336\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/558a95a0-e472-419f-a1f3-1297019186c6.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNicolas Puig  | IC405, IC 410, IC417  | Askar FRA300 Pro+ZWO ASI294MM Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1772131962184208384\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/ff09c08a-16c0-4935-aee7-acce31ee3d2f.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eImran Badr  | Rho Ophiuchi complex  | Askar FRA300 Pro+ZWO ASI2600MC Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":55279782494584,"sku":"FRA300Pro","price":995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/FRA300Prosideview.png?v=1758024332"},{"product_id":"askar-fra400c-apo-astrograph-dark-clear-skies","title":"Askar FRA400C APO Astrograph - Dark Clear Skies","description":"\u003ch2\u003eAskar FRA400C APO Astrograph\u003c\/h2\u003e\n\u003cp\u003eThe Askar FRA400C is a versatile \u003cstrong\u003equintuplet APO astrograph\u003c\/strong\u003e designed for both astrophotography and visual use. With a 72 mm aperture, 400 mm focal length at f\/5.6, and ED glass elements, this telescope delivers crisp, flat-field images across a large 44 mm full-frame sensor.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture:\u003c\/strong\u003e 72 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal Length:\u003c\/strong\u003e 400 mm (f\/5.6)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Design:\u003c\/strong\u003e Quintuplet APO (Petzval)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage Circle:\u003c\/strong\u003e 44 mm (full-frame coverage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocus:\u003c\/strong\u003e 2.5″ dual-speed rack-and-pinion focuser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack Focus:\u003c\/strong\u003e 140 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse Case:\u003c\/strong\u003e Wide-field astrophotography and observation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose the FRA400C?\u003c\/h3\u003e\n\u003cp\u003eThe FRA400C’s \u003cstrong\u003ePetzval optical design\u003c\/strong\u003e eliminates the need for a separate field flattener, ensuring sharp stars across the entire frame. This makes setup quicker and easier, saving valuable imaging time under the night sky.\u003c\/p\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide-field imaging of nebulae and star clusters\u003c\/li\u003e\n\u003cli\u003eFull-frame astrophotography\u003c\/li\u003e\n\u003cli\u003eAstrophotographers seeking a compact, flat-field refractor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Askar FRA400C is a superb balance of portability, optical performance, and convenience, making it an excellent choice for beginners and advanced imagers alike.\u003c\/p\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eProduct introduction\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"ce_detail\" id=\"ce_detail-297480\" data-layout=\"flow\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1742363521404\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1742363521404-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521409\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/93cd99a3-5b72-450d-be3a-3485c38ce809.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521414\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/c055a304-ebeb-4421-809a-d5b76fce56f3.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521464\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/1ec6dbf6-a4ec-4286-b17b-cea6baf2d6ef.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1742363680660\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1742363680660-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363692635\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/8c542424-9442-46bd-8b00-b1156fdca5aa.gif\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_1 p_gridCell\" id=\"content_ie-1742363680660-1\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363694647\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/be705b9a-673e-4a22-89c3-2d37841d74ed.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1743471677536\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/ad61c9dc-368c-4865-8376-68b8a9f95657.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1743471698287\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1743471698287-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1743471706149\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b2aebf4c-3085-4a6f-9464-230a65c2826d.gif\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_1 p_gridCell\" id=\"content_ie-1743471698287-1\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1743471708280\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3d29c05e-35d7-4965-8172-8e08efc9558b.gif\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1743471801226\"\u003e\n\u003cdiv class=\"ie_grid\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1743471801226-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1743471818387\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/cedfe70c-4bdb-4e11-a734-103192aba50e.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_1 p_gridCell\" id=\"content_ie-1743471801226-1\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1743471819984\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/9daf2770-14db-4055-8134-8d92ef2fbfd4.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_2 p_gridCell\" id=\"content_ie-1743471801226-2\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1743471821783\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/4c1a8a1b-fff4-4648-8484-fff4188135a7.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521469\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/6d60fdea-7334-4863-890e-dee6429286c9.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521474\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/49d5dc29-5f1c-4fc8-8f36-94cfca2e5ef3.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521479\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b2940be0-94eb-4a71-a6d7-4e15ec826eba.gif\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521484\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/36162715-e1d8-49e0-bd82-129cfdf3e1e9.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521489\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/f742195d-29ef-4329-a776-f9d687af8b51.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1742363521494\"\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/www.sharpstar-optics.com\/Products_1\/FRA400C_Reducer.html\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/94e5c75a-49e8-45d2-999b-1a70f0c04546.jpg\" width=\"100%\" height=\"100%\" alt=\"长友气体\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-1\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable class=\"ck-table-resized\" align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ccolgroup\u003e\n\u003ccol\u003e\n\u003ccol\u003e\n\u003ccol\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eFRA400C Parameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAperture size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e72mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e400mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ef\/5.6\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eObjective lens\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eQuintuplet dual ED air-spaced APO\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFormat specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e44mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAperture blades\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e17 pieces\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eGraded Aperture\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ef\/5.6-f\/22\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eClosest Focus Distance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e5m\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocusing mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eManual focus\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Diameter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eM82\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eTotal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e370mm (inclulding dew shield); 420mm (without dew shield)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eOTA weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e2.68kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eTotal weight (including handle \u0026amp; dovetail plate)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e3.18kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eRear-end adapter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eM72\/M54\/M48(with M48×0.75 filter thread)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eRear-end connection distance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eSupport 50-60mm range (Recommended connection length is 55mm)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eStandard package items\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e1.25inch\/2inch adapter,a manual\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003cimg class=\"image_resized\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/f98df608-5603-4309-9284-47eac9c9397a.jpg\" alt=\"长友气体\"\u003e\u003cimg class=\"image_resized\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/30d18517-e62e-478a-bd83-66a0e7709945.jpg\" alt=\"长友气体\"\u003e\u003cimg class=\"image_resized\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/9dbaa0d1-5386-4684-8105-fc75465b5cd5.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eFRA400C AFkit Electronic Focuser Assembly Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003cimg class=\"image_resized\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/b470ebed-c387-45b0-9ddf-e84c0ac68145.jpg\" alt=\"长友气体\"\u003e\u003cimg class=\"image_resized\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/20121f82-d070-49d6-96b2-b6cd5d566a9b.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eOptical Path Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003cimg class=\"image_resized\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/e0e57d95-4f16-492c-8b31-d6d5a20e1d12.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eSpot Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003cimg class=\"image_resized\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/3b6efed1-779f-4666-8c49-ac1309932316.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eLongitudinal Aberration\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003cimg class=\"image_resized\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/ccf69363-36d7-4a1c-9a21-4e26a58d9ef1.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-2\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"video-box\" controlslist=\"nodownload\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/JwuV7BSWoRY?si=rqf6cKMaYyuD9USJ\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-3\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix response-transition\"\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/cca29610-f81f-4c52-8809-7f7ab0259853.jpg\" alt=\"长友气体\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eThe Shark Nebula LRGB  |  Mihail Mamchurov  |  Askar FRA400 + ZWO ASI2600MM Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/88cfbd95-d14e-48d3-90ee-30ef5e0aeff5.jpg\" alt=\"长友气体\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eCesar Cobra  |  IC 4592  |  Askar FRA400 + ZWO ASI294MC Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cfigure class=\"image image_resized\"\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/20b5fb22-e45f-4354-9924-f11379d45b96.jpg\" alt=\"长友气体\"\u003e\n\u003cfigcaption\u003e\u003cspan\u003e\u003cstrong\u003eLaurent Marzec  |  SH2-296  |  Askar FRA400 + ZWO ASI2600MC Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":55279782527352,"sku":"FRA400C","price":895.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/FRA400Cleftsideview.png?v=1758028254"},{"product_id":"sharpstar-15028hnt-al-hyperbolic-newtonian-astrograph","title":"Sharpstar 15028HNT-AL Hyperbolic Newtonian f\/2.8 Astrograph - Dark Clear Skies","description":"\u003ch2\u003eSharpstar 15028HNT-AL Hyperbolic Newtonian\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSharpstar 15028HNT-AL\u003c\/strong\u003e is a powerful \u003cstrong\u003e150mm f\/2.8 Hyperbolic Newtonian astrograph\u003c\/strong\u003e engineered for deep-sky astrophotography. With its fast focal ratio and built-in corrector, it delivers sharp, wide-field images with minimal distortion.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture:\u003c\/strong\u003e 150mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal Length:\u003c\/strong\u003e 420mm (f\/2.8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Hyperbolic Newtonian with built-in triplet corrector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope Tube:\u003c\/strong\u003e Lightweight aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser:\u003c\/strong\u003e Dual-speed R\u0026amp;P rigid focuser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Wide-field astrophotography\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose the 15028HNT-AL?\u003c\/h3\u003e\n\u003cp\u003eThe 150mm aperture gathers more light, while the f\/2.8 speed allows shorter exposures. Its triplet corrector ensures pinpoint stars across full-frame sensors, making it ideal for astrophotographers using modern cameras.\u003c\/p\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDeep-sky imaging of nebulae and galaxies\u003c\/li\u003e\n\u003cli\u003eFull-frame and APS-C astrophotography\u003c\/li\u003e\n\u003cli\u003eAstrophotographers seeking a fast, wide-field Newtonian\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix response-transition\"\u003e\n\u003cdiv class=\"ce_detail\" data-layout=\"flow\" id=\"ce_detail-294742\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1731309015567\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\" id=\"content_ie-1731309015567-0\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1731309015572\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\" id=\"content_ie-1731309015572-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1731309015577\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1864112154550382592\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/a4a33386-e549-412d-8240-7653c1636b73.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_line\" id=\"ie_line-1731309015827\"\u003e\n\u003cspan\u003e \u003c\/span\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1731309015832\"\u003e\n\u003cp\u003e\u003cspan\u003eThe 13028HNT-AL is a hyperbolic Newtonian reflector with a 130mm aperture and a fast F2.8 focal ratio.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e13028HNT-AL supports a 44mm full-frame image circle, and the star performance is great.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe primary mirror is made of Pyrex-alike glass PZ33. The thermal expansion coefficient is smaller than ordinary glass. The dielectric multilayer coating gives the primary mirror a highly reflective ability of up to 97%. The minor axis of the secondary mirror is 65mm, enabling sufficient illumination for full-frame imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe corrector in the focuser adopts a doublet lens design, one of which is an ED glass, enhancing the power in aberration correction.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1731309015837\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/447eed8a-7eb4-426a-8a81-54f9cf2430e1.jpg\" width=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1731309206953\"\u003e\n\u003cp\u003e\u003cspan\u003e13028HNT-AL further enhances the structure stability of the optical axis of the primary mirror, and there are three sets of adjustment screws at the bottom of the lens tube for adjusting the angle of the primary mirror.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e13028HNT-AL improves the bracket structure of the secondary mirror to make it more stable. The secondary mirror bracket is CNC machined， integrated manufacturing with no misalignment, which ensures beautiful diffraction spikes during astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThere is a finder base on the side of the lens tube, which provides additional mounting positions for finder scope or other astronomical accessories.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e13028HNT-AL ‘s tube ring is a hollow design, sturdy and durable. Enlarged hand screws allow users to open and close the tube ring without additional tools.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e13028HNT-AL's focuser is a dual-speed rack-and-pinion large rigid focuser, which ensures a 2cm focusing travel as much as possible within the structural limitations and can be compatible with most motorized focusers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1731309015847\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1859058669647900672\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/db909a2c-ebad-497d-ae4f-aefe945673ad.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1731309255345\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe focuser is designed with an enlarged handwheel, integrated camera rotator and locking screw, and a built-in doublet corrector. The structure of the focuser is very stable and can carry 3kg.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe back focus of 13028HNT-AL is standard 55mm (from the M48 thread).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStandard Vixen-style 290mm dovetail plate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e13028HNT-AL is all-metal, with an aluminum lens tube and CNC machined parts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e* The 13028HNT-AL focuser and rotator are shipped in a locked condition. Users should be sure to loosen the locking screws before initial use to avoid damage to the part.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1731309015857\"\u003e\n\u003cdiv\u003e\u003cimg height=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/cd313858-dbba-420d-ad0b-02acc2611e2d.jpg\" width=\"100%\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1731309015872\"\u003e\n\u003cdiv\u003e\u003cimg id=\"1856496552149323776\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/8cd60bdc-ca5c-42ad-a06b-2dd230c04602.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-1\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003e13028HNT\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAperture size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e130mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e364mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ef\/2.8\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary mirror type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eHyperbolic reflective mirror\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary mirror material\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003ePZ33（similar to Pyrex glass）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eCorrector\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eTwo-element air-spaced refractive lenses（including one ED glass）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMinor axis of secondary mirror\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e65mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eImage circle\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e44mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eField of view\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e6.9 degree\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMain tube material\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eAluminum\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMain tube outer diameter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e174mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMain tube length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e400mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eOTA weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e3.8kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eGross weight（including tube ring and dovetail plate）\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e4.8kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e0.89 arc second\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eLimiting visual magnitude\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e12.3\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eBack-focus\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e55mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Size Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1856497682344226816\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/5c49d9df-f85a-4a70-9aaf-0339050145e0.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003e  Please refer to the contents of the manual for specific optical axis alignment: \u003ca href=\"https:\/\/www.sharpstar-optics.com\/Products_1\/13028HNT-AL.html#saf-detail-4\"\u003eSHARPSTAR 13028HNT Instruction Manual \u003c\/a\u003e  \u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003eElectronic Focuser Assembly Diagram\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg id=\"1864146113879519232\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/20e0d8f0-9a5a-4d70-8782-34e8b2039fb1.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-2\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-3\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cimg id=\"1928333666563186688\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/f1ca84c6-bfbc-4688-881b-2c0c50b8be02.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eImran Badr  |  M8+M20  |  SHARPSTAR 13028HNT + ZWO ASI2600MM Pro\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1863823439225040896\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/feb60d55-46ae-457d-b461-aeaa8aa4ef79.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDave James  |  NGC1333  |  SHARPSTAR 13028HNT\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1863824104924000256\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/67bbeb2a-54e5-4701-abaf-2e243459c35e.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDave James  |  M42  |  SHARPSTAR 13028HNT\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1863824320727789568\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/84dcbaec-42f0-486a-bf8e-2df8be77b148.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDonald Norwood  |  M45  |  SHARPSTAR 13028HNT\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1863824420994879488\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/0a32fb65-bd19-463e-9724-337fb93b7201.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eOlivier Constans  |  M31  |  SHARPSTAR 13028HNT + ToupTek 2600MC\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":55280288334200,"sku":"15028HNT-AL","price":1795.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/15028-HNT-ALalternatesideview.png?v=1758044627"},{"product_id":"sharpstar-15028hnt-hyperbolic-newtonian-astrograph","title":"Sharpstar 15028HNT Hyperbolic Newtonian f\/2.8 Astrograph","description":"\u003ch2\u003eSharpstar 15028HNT Hyperbolic Newtonian\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSharpstar 15028HNT\u003c\/strong\u003e is a fast \u003cstrong\u003ef\/2.8 Newtonian astrograph\u003c\/strong\u003e optimized for astrophotography. With a 150mm aperture and hyperbolic mirror design, it provides excellent wide-field deep-sky imaging capabilities.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAperture:\u003c\/strong\u003e 150mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal Length:\u003c\/strong\u003e 420mm (f\/2.8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Hyperbolic Newtonian with built-in corrector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Deep-sky astrophotography\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose the 15028HNT?\u003c\/h3\u003e\n\u003cp\u003eThis telescope offers an affordable and powerful option for wide-field astrophotography. Its fast focal ratio enables shorter exposures, while the corrector ensures edge-to-edge sharpness.\u003c\/p\u003e\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDeep-sky astrophotography\u003c\/li\u003e\n\u003cli\u003eWide-field nebulae and galaxy imaging\u003c\/li\u003e\n\u003cli\u003eAstrophotographers seeking a fast Newtonian\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix response-transition\"\u003e\n\u003cdiv class=\"ce_detail\" data-layout=\"flow\" id=\"ce_detail-275106\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1667527470797\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\" id=\"content_ie-1667527470797-0\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1667527470802\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox response-transition\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell response-transition\" id=\"content_ie-1667527470802-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1667527470807\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/69315635-87b4-48ac-a4d8-e9c858a58295.jpg\" alt=\"长友气体\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1667527470812\"\u003e\n\u003cdiv class=\"ie_grid signal\"\u003e\n\u003cdiv class=\"e_box e_box-000 p_gridbox\"\u003e\n\u003cdiv class=\"e_box e_box-000 d_gridCell_0 p_gridCell\" id=\"content_ie-1667527470812-0\"\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1669371196712\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe launch of Sharpstar 15028HNT, a fast-focal-ratio hyperbolic Newtonian astrograph, fills up the existing service gap in domestic market. Compared with the conventional parabolic mirror, the process of producing, manufacturing and testing hyperbolic mirror is much more intricate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe astrograph comes second to no one considering its rather fast focal ratio. The telescope is wrapped with durable carbon fiber material, artistically enhancing its appearance while sharply decreasing its weight. Sharpstar 15028HNT adopts Pyrex-alike glass, enabling the mirror to reach a quite stable reflectivity.\u003cbr\u003e \u003cbr\u003eBoth primary and secondary mirrors wear enhanced aluminum coating, thus keeping a reflective rate at more than 96%. The one-piece X-shaped strut of the secondary mirror keeps a solid and unbreakable structure. 2.5\" rack-and-pinion focuser has a stronger load capacity and can be smoothly adjusted.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe delicately pierced handle bar is completely made from CNC-manufactured aluminum, which can be used as a base for the attachment of other accessories. The new design of the telescope handle can aesthetically and mechanically cater to the demands of enthusiasts.\u003cbr\u003e \u003cbr\u003eA three-element corrector is laid in the optical path, enabling the whole optical system to better achieve full-frame imaging and control the vignette. The standard 55mm back-focus and M48×0.75 thread tapped on the focuser thoroughly prepare the telescope for most stock imaging devices and make sure the item in the objective lens can be perfectly projected onto the focal plane.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-1\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003ctable align=\"center\" cellspacing=\"0\" width=\"84.20%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003e15028HNT\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eAperture size\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e150mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e420mm\/F2.8\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary mirror type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eHyperboloid\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eCorrector type\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eTriplet air-spaced\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eShort axis diameter of secondary mirror\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e70mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFully illuminated image circle\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e44mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eActual field\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e6 degree\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMain tube material\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eCarbon fiber\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMain tube outer diameter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e195mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eMain tube length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e445mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eNet weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e4.45kg\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eGross weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e5.95kg (including tube cap, handle, tube rings and dovetail plate)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e0.77 arc second\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eFocuser\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e 2.5”microdrive focusing\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eLimiting visual magnitude\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e12.7\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eBack-focus\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e55mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1599610150930776064\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/a15f9c08-b10d-4b80-8995-7566766e47eb.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-2\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eVideo\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-3\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003eImages\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cimg id=\"1599654920273166336\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/660ccbbc-031c-42dc-8384-70df577a5c57.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eM31     |     Sharpstar 150 F2.8\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg id=\"1599654920566767616\" src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/581437bb-9042-4369-bc28-a4288759a1b6.jpg\" alt=\"长友气体\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eM45     |     Sharpstar 150 F2.8\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":55280293609848,"sku":"15028HNT","price":2119.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/15028-HNTfrontsideview.png?v=1758045078"},{"product_id":"sca310-310mm-f3-8-cassegrain-astrograph","title":"Sharpstar SCA310 310mm f\/3.8 Super Cassegrain Astrograph","description":"\u003cdiv id=\"saf-detail-0\" class=\"cbox-57 p_loopItem\"\u003e\n\u003cp style=\"font-size: 0.875rem; margin-bottom: 0.75em;\"\u003eThe Sharpstar SCA310 is a 310mm large-aperture f\/3.8 Super Cassegrain astrograph designed for serious deep-sky astrophotography. Its ultra-fast focal ratio and precision parabolic primary mirror deliver exceptional light-gathering power with sharp, round stars across the entire field.\u003c\/p\u003e\n\u003cp style=\"margin-top: 0; margin-bottom: 0.75em;\"\u003eAn integrated 3-inch triplet corrector with ED glass produces a flat, well-corrected image circle suitable for full-frame and medium-format sensors. The carbon-fibre tube ensures excellent thermal stability during long imaging sessions, making the SCA310 ideal for high-resolution, high-efficiency imaging of faint nebulae and galaxies.\u003c\/p\u003e\n\u003ch2\u003eUltra-Fast f\/3.8 Optical Design for Deep-Sky Imaging\u003c\/h2\u003e\n\u003cfigure\u003e\u003cimg alt=\"SCA310 f\/3.8 Cassegrain astrograph displayed on a presentation stand\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-astrograph-hero-presentation.jpg?v=1766994656\"\u003e\u003c\/figure\u003e\n\u003cp\u003eWith a 310mm aperture and fast f\/3.8 focal ratio, the SCA310 enables significantly shorter exposure times while revealing fine detail and vivid colour in faint deep-sky targets.\u003c\/p\u003e\n\u003cp\u003eThe high-precision parabolic primary mirror eliminates spherical aberration, delivering sharp, round star points across the field. A fused-silica spherical secondary mirror offers excellent thermal stability, folding a long optical path into a compact, rigid tube.\u003c\/p\u003e\n\u003cp\u003eEnhanced aluminium mirror coatings provide over 95% reflectivity, maximising light throughput and imaging efficiency.\u003c\/p\u003e\n\u003cfigure\u003e\u003cimg alt=\"Primary and secondary mirror system of the SCA310 astrograph with enhanced aluminium coatings\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-primary-and-secondary-mirrors.jpg?v=1766994759\"\u003e\u003c\/figure\u003e\n\u003cp\u003eA rear-mounted 3-inch triplet coma corrector incorporating ED glass delivers a flat, well-corrected field from centre to edge, fully supporting full-frame and medium-format sensors with near 100% illumination.\u003c\/p\u003e\n\u003cp\u003eThe optical design requires no additional back-focus calculations, enabling fast and straightforward setup and focusing.\u003c\/p\u003e\n\u003cfigure\u003e\u003cimg alt=\"Carbon fibre optical tube of the SCA310 f\/3.8 Cassegrain astrograph\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-carbon-fibre-optical-tube.jpg?v=1766994510\"\u003e\u003c\/figure\u003e\n\u003cp\u003eA hollow carry handle and multi-slot mounting system allow flexible accessory attachment. The supplied 405mm Losmandy-style dovetail ensures secure compatibility with mainstream equatorial mounts.\u003c\/p\u003e\n\u003cfigure\u003e\u003cimg alt=\"Multi-function hollow handle bar and Losmandy-style dovetail plate on the SCA310 astrograph\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-hollow-handle-and-losmandy-dovetail.jpg?v=1766994605\"\u003e\u003c\/figure\u003e\n\u003cp\u003eThe 3.5-inch high-rigidity rack-and-pinion focuser provides 28mm of travel with a 1:10 dual-speed fine adjustment. A front-mounted 360° rotator prevents cable wrap during imaging.\u003c\/p\u003e\n\u003cp\u003eRear adapters (M68 \/ M54 \/ M48) ensure wide compatibility. The M48 adapter includes an integrated 2-inch filter thread for direct filter installation.\u003c\/p\u003e\n\u003cfigure\u003e\u003cimg alt=\"3.5 inch rack and pinion focuser with fine adjustment on the SCA310 astrograph\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-3-5-inch-rack-and-pinion-focuser.jpg?v=1766994711\"\u003e\u003c\/figure\u003e\n\u003cp\u003eThree rear-mounted cooling fans accelerate thermal equilibrium of the primary mirror, improving image stability and overall observing efficiency.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eHow the SCA310 Compares to Other Astrograph Designs\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eDesign\u003c\/th\u003e\n\u003cth\u003eTypical Characteristics\u003c\/th\u003e\n\u003cth\u003eHow the SCA310 Differs\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eRitchey–Chrétien (RC)\u003c\/th\u003e\n\u003ctd\u003eSlower focal ratios (typically f\/8), large central obstruction, often requires additional flatteners or reducers for imaging.\u003c\/td\u003e\n\u003ctd\u003eThe SCA310 operates natively at f\/3.8 with an integrated ED triplet corrector, delivering a wider, flatter field and dramatically shorter exposure times without extra optics.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrected Dall–Kirkham (CDK)\u003c\/th\u003e\n\u003ctd\u003eExcellent optical correction but generally larger, heavier, and significantly more expensive systems.\u003c\/td\u003e\n\u003ctd\u003eThe SCA310 achieves high-level correction in a more compact and accessible package, optimised specifically for modern deep-sky imaging sensors.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSharpstar SCA310\u003c\/th\u003e\n\u003ctd\u003eNative f\/3.8 system with integrated ED corrector, carbon-fibre tube, active cooling, and full-frame to medium-format support.\u003c\/td\u003e\n\u003ctd\u003ePurpose-built for efficient, high-resolution astrophotography with minimal setup complexity and maximum imaging productivity.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv id=\"saf-detail-1\" class=\"cbox-57 p_loopItem\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd\u003e310mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length \/ Ratio\u003c\/th\u003e\n\u003ctd\u003e1178mm \/ f\/3.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Mirror\u003c\/th\u003e\n\u003ctd\u003eAspherical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Mirror Material\u003c\/th\u003e\n\u003ctd\u003ePyrex-equivalent glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSecondary Mirror\u003c\/th\u003e\n\u003ctd\u003eFused silica glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eImage Circle\u003c\/th\u003e\n\u003ctd\u003eMedium format (55mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube Material\u003c\/th\u003e\n\u003ctd\u003eCarbon fibre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCorrector\u003c\/th\u003e\n\u003ctd\u003eTriplet (1× ED glass)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSecondary Diameter\u003c\/th\u003e\n\u003ctd\u003e184mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube Length\u003c\/th\u003e\n\u003ctd\u003e721mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube Diameter\u003c\/th\u003e\n\u003ctd\u003e378mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e23.5kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRear Threads\u003c\/th\u003e\n\u003ctd\u003eM68 \/ M54 \/ M48 (M48 includes filter thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBack Focus\u003c\/th\u003e\n\u003ctd\u003e38–66mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eProduct Size Diagram\u003c\/h2\u003e\n\u003cfigure\u003e\u003cimg alt=\"Mechanical dimensions and technical drawings of the SCA310 Cassegrain astrograph\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-mechanical-dimensions-drawing.webp?v=1766994856\"\u003e\u003c\/figure\u003e\n\u003ch2\u003eOptical Path Diagram\u003c\/h2\u003e\n\u003cfigure\u003e\u003cimg alt=\"Optical design diagram of the SCA310 f\/3.8 Cassegrain astrograph showing ray paths and ED corrector element\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-optical-design-diagram.webp?v=1766994808\"\u003e\u003c\/figure\u003e\n\u003ch2\u003eRelative Illumination\u003c\/h2\u003e\n\u003cfigure\u003e\u003cimg alt=\"Vignetting diagram showing field illumination of the SCA310 f\/3.8 Cassegrain astrograph\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-vignetting-diagram.webp?v=1766995002\"\u003e\u003c\/figure\u003e\n\u003cfigure\u003e\u003cimg alt=\"Vignetting diagram showing wide-field illumination performance of the SCA310 f\/3.8 Cassegrain astrograph\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-vignetting-diagram-full-frame.webp?v=1766995051\"\u003e\u003c\/figure\u003e\n\u003ch2\u003eSpot Diagram\u003c\/h2\u003e\n\u003cfigure\u003e\u003cimg alt=\"Spot diagram showing optical performance of the SCA310 f\/3.8 Cassegrain astrograph across the image field\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-spot-diagram-optical-performance.webp?v=1766994908\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":55402829283704,"sku":"SCA310","price":7995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sca310-astrograph-new-product-badge.webp?v=1766995099"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/collections\/sharpstar-telescopes-high-quality-refractors-and-accessories-329090.webp?v=1718364175","url":"https:\/\/www.darkclearskies.co.uk\/collections\/sharpstar-telescopes-high-quality-refractors-and-accessories.oembed","provider":"Dark Clear Skies ","version":"1.0","type":"link"}