{"title":"Reducers, Flatteners \u0026 Correctors","description":"\u003cp\u003eImprove your telescope’s imaging performance with focal reducers, field flatteners and optical correctors selected by Dark Clear Skies. Explore solutions designed to widen the field of view, shorten exposure times, improve edge-to-edge star shapes and correct optical aberrations. Choose a model specifically matched to your telescope, camera, required spacing and imaging setup, with knowledgeable UK support when you need it.\u003cbr\u003e\u003c\/p\u003e","products":[{"product_id":"altair-lightwave-0-6x-focal-reducer-enhance-wide-field-astrophotography-1","title":"Altair Lightwave 0.6x Focal Reducer - Enhance Wide-Field Astrophotography","description":"\u003ch2\u003eThe Lightwave 0.6x focal reducer\u003c\/h2\u003e\n\u003cp\u003eThis reducer provides a 0.6x reduction in F-Ratio, resulting in faster exposure times and a wider field for Astro-photography. It is designed for refractor telescopes with focal ratios of F6 or longer.\u003cbr\u003e\u003c\/p\u003e\n\u003cul class=\"product-features\"\u003e\n\u003cli\u003eReduces and flattens the photographic field\u003c\/li\u003e\n\u003cli\u003e38mm clear aperture\u003c\/li\u003e\n\u003cli\u003eIntegral T-Ring adapter thread\u003c\/li\u003e\n\u003cli\u003eRequires a back-focus of 55mm to the CCD Chip\u003c\/li\u003e\n\u003cli\u003eFor DSLRs, a standard T-Thread adapter of approximately 10mm thickness is required\u003c\/li\u003e\n\u003cli\u003eFits any 2\" format telescope like an eyepiece with its standard 2\" OD barrel\u003c\/li\u003e\n\u003cli\u003eThreaded base of the 2\" OD barrel for 2\" filters\u003c\/li\u003e\n\u003cli\u003eCNC machined body with a gloss black anodized finish\u003c\/li\u003e\n\u003cli\u003eIncludes a CNC machined T-threaded end-cap to protect the rear lens element from dust (more exposed than the front element). A plastic dust cap is provided for the 2\" OD front barrel.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":37974875701425,"sku":"","price":99.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/altair-lightwave-06x-focal-reducer-dark-clear-skies-456891.jpg?v=1782294529"},{"product_id":"svbony-sv193-2-inch-0-8x-focal-reducer-flattener-for-80-ed-refractor","title":"Svbony SV193 2-Inch 0.8x Focal Reducer \/ Flattener for 80 ED Refractor.","description":"\u003cdiv class=\"dcs-product space-y-6\"\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for fixed-field astrophotography with the SV503 refractor.\u003c\/strong\u003e While the SV193 will also thread into many other f\/6–f\/7 refractors using 2\" focusers, performance cannot be guaranteed on all optical systems.\u003c\/p\u003e\n\u003cp\u003eThe 0.8× reducer provides a wider field, finer star points and an improved signal-to-noise ratio under the same exposure time. In addition to reducing the focal length for faster imaging, the integrated field flattener corrects the natural curvature present in refractors.\u003c\/p\u003e\n\u003cp\u003eThis reduction system shortens exposure times and meets the needs of astrophotographers working under limited observing windows. Paired with an SV503 refractor, it delivers sharp, well-corrected star fields across the frame. The default back-focus is 55 mm. Using a 360° field rotator (not included) helps achieve your preferred framing while supporting filter wheels, OAGs and cameras simultaneously.\u003c\/p\u003e\n\u003ch2\u003eSV193 2-inch 0.8× Photo Reducer \/ Flattener for SV503 80ED Refractors\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"SV193 reducer flattener overview\" src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113321965215858920417.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003e3-Element, 2-Group Optical Design\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"SV193 3-element optical design\" src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113323722026736658646.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eHard-Anodised Aluminium Housing\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"SV193 anodised aluminium body\" src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113326136254595769005.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"SV193 reducer construction detail\" src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113327205651755828846.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eUsing the SV193 with Filters\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"SV193 filter connection setup\" src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113328278014794445403.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eUsing the SV193 with Cameras\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"SV193 camera connection setup\" src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113329466305297993719.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSV193 Photo Reducer \/ Flattener for Astrophotography\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"SV193 astrophotography performance example\" src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113330507179331430292.jpg\"\u003e\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\" class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eSV193\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFit For\u003c\/th\u003e\n\u003ctd\u003eSV503 80ED F7\u003c\/td\u003e\n\u003ctd\u003eSV503 102ED F7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eW9152B\u003c\/td\u003e\n\u003ctd\u003eW9152D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBack Focus\u003c\/th\u003e\n\u003ctd\u003e55 mm\u003c\/td\u003e\n\u003ctd\u003e55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd\u003e2-inch\u003c\/td\u003e\n\u003ctd\u003e2-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eM48 × 0.75\u003c\/td\u003e\n\u003ctd\u003eM48 × 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Structure\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003e3-elements \/ 2-groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Coating\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eFMC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBlackened Lens Edges\u003c\/th\u003e\n\u003ctd colspan=\"2\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNet Weight\u003c\/th\u003e\n\u003ctd\u003e164 g \/ 5.78 oz \/ 0.36 lb\u003c\/td\u003e\n\u003ctd\u003e177 g \/ 6.24 oz \/ 0.39 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":41864026849457,"sku":"W9152B","price":129.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/SvbonySV1932-Inch0.8xFocalReducerFlattenerfor80EDRefractor..jpg?v=1756883383"},{"product_id":"sv193-2-inch-0-8x-focal-reducer-flattener-for-102mm-ed-refractor","title":"SV193 2-Inch 0.8x Focal Reducer \/ Flattener for 102mm ED Refractor.","description":"\u003cdiv class=\"dcs-product space-y-6\"\u003e\n\n\u003ch2\u003eSVBONY SV193 2-Inch 0.8× Focal Reducer \/ Field Flattener for SV503 102ED\u003c\/h2\u003e\n\n\u003cp\u003eThe SV193 0.8× focal reducer and field flattener improves imaging performance on the SV503 102ED by widening the field, reducing exposure times and correcting edge curvature for sharp stars across the frame.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eStandard 2\" nosepiece for the telescope side; M48×0.75 thread on the camera side. Supports full-frame sensors.\u003c\/li\u003e\n  \u003cli\u003eSupports standard 2\" filters for adding light-pollution or narrowband filters.\u003c\/li\u003e\n  \u003cli\u003e0.8× reduction provides a faster focal ratio and shorter exposure times.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cimg src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113340509345698139376.jpg\" alt=\"SV193 reducer overview\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003e3-Element, 2-Group Lens Structure\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113339334948245181325.jpg\" alt=\"SV193 optical structure\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eHard-Anodised Aluminium Body\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113337855650269044200.jpg\" alt=\"SV193 anodised housing\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eSV193 for SV503 102ED — Structure\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113347099694033499035.jpg\" alt=\"SV193 102ED structure diagram\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eSV193 for SV503 102ED — Installation Steps\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113348132239377085289.jpg\" alt=\"SV193 installation steps\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eSV193 Photo Reducer \/ Flattener for Astrophotography\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/v3.svbony.com\/UploadedMedia\/image\/20240905\/6386113334108196358056919.jpg\" alt=\"SV193 astrophotography example\"\u003e\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\n\u003ctable class=\"spec-table\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\" style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n  \u003cth\u003eModel\u003c\/th\u003e\n  \u003ctd colspan=\"2\"\u003eSV193\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eFit For\u003c\/th\u003e\n  \u003ctd\u003eSV503 80ED F7\u003c\/td\u003e\n  \u003ctd\u003eSV503 102ED F7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eSKU\u003c\/th\u003e\n  \u003ctd\u003eW9152B\u003c\/td\u003e\n  \u003ctd\u003eW9152D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eBack Focus\u003c\/th\u003e\n  \u003ctd\u003e55 mm\u003c\/td\u003e\n  \u003ctd\u003e55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eBarrel Size\u003c\/th\u003e\n  \u003ctd\u003e2-inch\u003c\/td\u003e\n  \u003ctd\u003e2-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eThread Standard\u003c\/th\u003e\n  \u003ctd\u003eM48×0.75\u003c\/td\u003e\n  \u003ctd\u003eM48×0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eLens Structure\u003c\/th\u003e\n  \u003ctd colspan=\"2\"\u003e3 elements \/ 2 groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eLens Coating\u003c\/th\u003e\n  \u003ctd colspan=\"2\"\u003eFMC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eBlackened Lens Edges\u003c\/th\u003e\n  \u003ctd colspan=\"2\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n  \u003cth\u003eNet Weight\u003c\/th\u003e\n  \u003ctd\u003e164 g \/ 5.78 oz \/ 0.36 lb\u003c\/td\u003e\n  \u003ctd\u003e177 g \/ 6.24 oz \/ 0.39 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c\/div\u003e\n","brand":"Svbony","offers":[{"title":"Default Title","offer_id":41864028520625,"sku":"W9152D","price":134.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/SvbonySV1930.8xfocalreducerfrontview.webp?v=1756883802"},{"product_id":"svbony-sv209-1-0x-flattener-corrects-the-field-for-sv550-80f6-astrophotography-m63x1-connection-black","title":"SVBONY SV209 1.0x Flattener Corrects the Field for SV550 80F6 Astrophotography M63x1 Connection Black","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe corrector is suitable for SV550 80F6\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e75 filter thread for the use of 2\" filters in the camera adapter\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMaximum working distance from the M63x1 internal thread: 103 mm - space enough for almost all adaptations\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cimg alt=\"W9161A(SV209)官网-9.jpg\" src=\"https:\/\/www.svbony.com\/UploadedMedia\/image\/20220706\/6379272674617988282912756.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":42113438515377,"sku":"W9161A","price":175.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/svbony-sv209-10x-flattener-corrects-the-field-for-sv550-80f6-astrophotography-m63x1-connection-black-360691.jpg?v=1718480511"},{"product_id":"sharpstar-0-8x-reducer-and-flattener","title":"Sharpstar 0.8x Reducer and Flattener","description":"\u003ch3 class=\"title page-title\" data-mce-fragment=\"1\"\u003eSharpstar 0.8x Reducer and Field Flattener for FULL FRAME Cameras for Sharpstar 61EDPH Telescope - M48 Camera Connection.\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMale M63 Connection Thread to the 61EDPH telescope\u003c\/li\u003e\n\u003cli\u003eDesigned for Full Frame cameras\u003c\/li\u003e\n\u003cli\u003e360-degree rotation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eThis Reducer\/Flattener has been specifically designed for the Sharpstar 61EDPH APO telescopes.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(It might possibly work with other similar telescopes as well, but we cannot offer any recommendations )\u003c\/p\u003e\n\u003cp\u003eIt will connect to your telescope via a male M63 x 1 thread. For the correct framing, the reducer\/flattener features a 360-degree rotation adapter. The back focus is 55 mm from the M48 thread.\u003c\/p\u003e\n\u003cp\u003eIt offers a corrected and fully illuminated field for full frame cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConnections and Back Focus:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003econnection to telescope: M63x1 male thread\u003c\/li\u003e\n\u003cli\u003econnection to camera: M48x0.75 male thread\u003c\/li\u003e\n\u003cli\u003eBack focus from M48 thread: 55mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003econnection to telescope: M63x1 male thread\u003c\/li\u003e\n\u003cli\u003econnection to camera: M48x0.75 male thread\u003c\/li\u003e\n\u003cli\u003erecommended distance from connecting thread to focal plane: 55mm\u003c\/li\u003e\n\u003cli\u003efocal length reduction: 0.8x\u003c\/li\u003e\n\u003cli\u003elenses: 3 lenses fully multicoated\u003c\/li\u003e\n\u003cli\u003efully corrected and illuminated field: TBC (but most likely around 44-45mm)\u003c\/li\u003e\n\u003cli\u003elength: 91mm (without the M48 thread)\u003c\/li\u003e\n\u003cli\u003ediameter: 76mm (66mm without the collar)\u003c\/li\u003e\n\u003cli\u003eweight: appr. 460 g\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":42313231270065,"sku":"SHS-F4.5-61","price":205.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sharpstar-08x-reducer-and-flattener-826293.webp?v=1718364834"},{"product_id":"zwo-adc-atmospheric-dispersion-corrector","title":"ZWO ADC Atmospheric Dispersion Corrector","description":"\u003ch4 data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eZWO ADC WAS VOTED AS  “HOT SKY PRODUCT – 2017” BY \u003cem data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSKY\u0026amp;TELESCOPE\u003c\/strong\u003e\u003c\/em\u003e MAGAZINE\u003cstrong data-mce-fragment=\"1\"\u003e!\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe first ADC made by amateur astronomers for amateur astronomers! A must-have for serious planetary observers and photographers...\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe ZWO Atmospheric Dispersion Corrector is a good alternative to more expensive similar devices for observing and imaging objects at low altitude.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe inner planets are always very near to the horizon therefore they cannot be observed at high altitudes. Even the outer planets appear frequently in not the best locations (i.e. at low altitude) where an ADC would be very helpful to correct the effects of atmospheric disparison.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe ZWO ADC includes two high quality prisms of 1\/10 Lamda surface quality. By a certain positioning of these prisms you can counteract the effects of atmospheric dispersion, i.e. reduce or possibly even completely eliminate the false colour introduced by the earths atmosphere.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSpecifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThreads T2 Male and Female\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDimensions TBC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOptical Aperture TBC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOptics: 2 Prisms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDeviation Angle: 2 Degrees\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMaterial: H-K9L (Schott BK7)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSurface Accuracy λ\/10@632.8nm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSee image for transmission details\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eUV friendly AR Coating\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003ca data-mce-fragment=\"1\" href=\"http:\/\/skyinspector.co.uk\/atm-dispersion-corrector--adc\" data-mce-href=\"http:\/\/skyinspector.co.uk\/atm-dispersion-corrector--adc\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/ec6c38fc-c5f8-4c0a-a61d-29ffe9709cbc.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/ec6c38fc-c5f8-4c0a-a61d-29ffe9709cbc.webp\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAbove image is courtesy of Martin Lewis.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003e\u003c\/h2\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42398417125553,"sku":"Z486-ADC","price":127.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/zwo-adc-atmospheric-dispersion-corrector-477447.webp?v=1718480512"},{"product_id":"sharpstar-3-0-85x-reducer-and-coma-corrector","title":"Sharpstar 3\" 0.85x Reducer and Coma Corrector","description":"\u003ch1 data-mce-fragment=\"1\"\u003eSharpstar 3\" 0.85x Reducer and Coma Corrector for Newtonian Telescopes for Full Frame Sensors\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis large coma corrector that also serves as an optical reducer, has been designed for commercially available Newtonian telescopes with an aim to improve their performance for imaging.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIts 3\" size offers a 44mm diameter corrected field suitable for imaging with an up to FULL FRAME sized sensor. It is compatible with most Newtonian telescopes that you can buy in a telescope shop with f\/4 to f\/6 focal ratio and between 150mm and 600mm aperture.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIt will reduce the required exposure time by changing an f\/4 system into f\/3.4, f\/5 into f\/4.25 and f\/6 into f\/5.1. It will also improve the image quality of the periferial stars.\u003c\/p\u003e\n\u003ch2 data-mce-fragment=\"1\"\u003eSPECIFICATIONS\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eModel：150mm-600mm, paraboloid reflector\u003cbr data-mce-fragment=\"1\"\u003eFocal ratio：F4-F6\u003cbr data-mce-fragment=\"1\"\u003eMagnification: 0.85x\u003cbr data-mce-fragment=\"1\"\u003eImage Circle: larger than 44mm, the optimal Image of 44 mm.\u003cbr data-mce-fragment=\"1\"\u003eCamera side connection: female M68, female M54, male M48\u003cbr data-mce-fragment=\"1\"\u003eTelescope side connection: male M82\u003cbr data-mce-fragment=\"1\"\u003eNumber of lenses: TBC\u003cbr data-mce-fragment=\"1\"\u003eOuter diameter: 3\"\u003cbr data-mce-fragment=\"1\"\u003eBack focus: 55mm (from end face of M54 thread, but please note, this might slightly vary depending on the optical system. Sharpstar boss, Michael offered to calculate the precise back focus on request...We would need to know the aperture and focal length of your Newtonian telescope...)\u003cbr data-mce-fragment=\"1\"\u003eOverall Length: 119mm (without the length of the M54 thread)\u003cbr data-mce-fragment=\"1\"\u003eOptical Coatings: Fully multi-coated\u003cbr data-mce-fragment=\"1\"\u003eWeight: 0.87kg\u003c\/p\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eEXAMPLE OF USE:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn the case of a Sharpstar 20032PNT, the focal plane is 55 mm from the M54X0.75 thread at the end of the focuser (from the end of the coma corrector, to be more precise...), and 52mm from the M48x0.75 thread. This \"standard\" back focal distance provides ample space for any visual or photographic equipment, being it a dSLR or a CCD \/ CMOS camera.\u003c\/span\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\/SHS-20032PNT-sharpstar-20032pnt-200mm-super-fast-f-3.2-paraboloid-newtonian-reflector-telescope-a12.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/SHS-20032PNT-sharpstar-20032pnt-200mm-super-fast-f-3.2-paraboloid-newtonian-reflector-telescope-a12.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/SHS-20032PNT-sharpstar-20032pnt-200mm-super-fast-f-3.2-paraboloid-newtonian-reflector-telescope-a12.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/SHS-20032PNT-sharpstar-20032pnt-200mm-super-fast-f-3.2-paraboloid-newtonian-reflector-telescope-a12.webp\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCLICK ON THE BELOW IMAGES FOR LARGER RESOLUTION!\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/SHS-20032PNT-sharpstar-20032pnt-200mm-super-fast-f-3.2-paraboloid-newtonian-reflector-telescope-red-4.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/SHS-20032PNT-sharpstar-20032pnt-200mm-super-fast-f-3.2-paraboloid-newtonian-reflector-telescope-red-4.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/SHS-20032PNT-sharpstar-20032pnt-200mm-super-fast-f-3.2-paraboloid-newtonian-reflector-telescope-red-4.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/SHS-20032PNT-sharpstar-20032pnt-200mm-super-fast-f-3.2-paraboloid-newtonian-reflector-telescope-red-4.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":42440239153329,"sku":"SHS-3-0.85X-COMA-CORR","price":725.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sharpstar-3-085x-reducer-and-coma-corrector-371674.webp?v=1718364982"},{"product_id":"askar-f-3-9-0-7x-reducer","title":"ASKAR f\/3.9 0.7x Reducer","description":"\u003ch1 data-mce-fragment=\"1\"\u003eASKAR f\/3.9 0.7x Reducer for FULL FRAME Cameras for ASKAR FRA400 \u0026amp; FRA500 Telescopes\u003c\/h1\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFemale M61 (TBC) Connection Thread to the ASKAR FRA400 telescope\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMale M48 thread on the camera side\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDesigned for Full Frame cameras\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBuilt-in 2\" filter thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-c.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-c.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-c.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-c.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eThis 0.7x Reducer has been specifically designed for the ASKAR FRA400 f5.6 APO telescopes to achieve a very fast f\/3.9 focal ratio and 280mm focal length for wide field full frame imaging.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIt will connect to your telescope via a female M61 thread. (This seems to be very specific to this telescope, so we doubt that you will be able to use it with any other telescope...). The backfocus is 55 mm from the M48 thread and ther eis also a female M48x0.75 thread inside to be used with a standard 2\" filter.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIt offers a corrected and fully illuminated field for full frame cameras.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-d.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-d.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-d.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-d.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eConnections and Back Focus:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003econnection to telescope: M61 female thread\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003econnection to camera: M48x0.75 male thread\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBack focus from M48 thread: 55mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-g.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-g.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-g.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-g.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-h.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-h.webp\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-h.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-h.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003econnection to telescope: M61 female thread\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003econnection to camera: M48x0.75 male thread\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003erecommened distance from connecting thread to focal plane: 55mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003efocal length reduction: 0.7x\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003elenses: TBC\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003efully corrected and illuminated field: TBC\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003elength: appr. 62mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ediameter: appr. 70mm (63mm without the collar)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eweight: 430 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-e.webp\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-e.webp\"\u003e\u003cimg alt=\"Click on the image for full resolution...\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-e.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-e.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440255537329,"sku":"AS40007RD","price":275.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-f39-07x-reducer-401328.jpg?v=1782294974"},{"product_id":"askar-f-3-9-0-7x-reducer-for-full-frame-cameras-for-askar-fra600","title":"ASKAR f\/3.9 0.7x Reducer for FULL FRAME Cameras for ASKAR FRA600","description":"\u003ch1 data-mce-fragment=\"1\"\u003eASKAR f\/3.9 0.7x Reducer for FULL FRAME Cameras for ASKAR FRA600\u003c\/h1\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h1\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFemale M61 (TBC) Connection Thread to the ASKAR FRA400 telescope\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMale M48 thread on the camera side\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDesigned for Full Frame cameras\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBuilt-in 2\" filter thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eThis 0.7x Reducer has been specifically designed for the ASKAR FRA600 f5.6 APO telescopes to achieve a very fast f\/3.9 focal ratio and 420mm focal length for wide field full frame imaging.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIt will connect to your telescope via a female M61 thread. (This seems to be very specific to this telescope, so we doubt that you will be able to use it with any other telescope...). The backfocus is 55 mm from the M48 thread and ther eis also a female M48x0.75 thread inside to be used with a standard 2\" filter.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIt offers a corrected and fully illuminated field for full frame cameras.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eConnections and Back Focus:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003econnection to telescope: M61 female thread\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003econnection to camera: M48x0.75 male thread\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBack focus from M48 thread: 55mm\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\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-g.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-g.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-g.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-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-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-h.webp\" data-mce-href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-h.webp\"\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-h.webp\" alt=\"\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/ij\/content\/askar-f-3.9-0.7x-reducer-for-full-frame-cameras-for-askar-fra400-h.webp\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003econnection to telescope: M61 female thread\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003econnection to camera: M48x0.75 male thread\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003erecommened distance from connecting thread to focal plane: 55mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003efocal length reduction: 0.7x\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003elenses: TBC\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003efully corrected and illuminated field: TBC\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003elength: appr. 62mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ediameter: appr. 70mm (63mm without the collar)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eweight: 430 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":42440261271729,"sku":"AS60007RD","price":410.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-f39-07x-reducer-for-full-frame-cameras-for-askar-fra600-854714.webp?v=1782294992"},{"product_id":"sharpstar-1-0x-flattener-for-61edph-iii-1","title":"Sharpstar 1.0x Flattener for 61EDPH III","description":"\u003ch2 data-mce-fragment=\"1\"\u003eSharpstar Full-Frame Flattener for 61EDPH-III\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis field flattener for the Sharpstar 61EDPH-III provides a flatter field for astrophotography, minimizing aberrations and haloing in images. Supporting full-frame camera sensors, this field flattener is a great compliment to an astrophotography setup based on the 61EDPH-III.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOn the technical side, one end of the flattener connects to the focuser of the 61EDPH-III with M68x1 threads. The other end has M48x0.75 threads and also features a built-in 2\" filter thread. The back focus is the standard 55 mm.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis field flattener is constructed in a 3-element, air-spaced triplet configuration and features excellent peripheral light reduction control. The elements have full surface multi-layer coatings. When used with the 61EDPH-III this flattener improves image quality in the corners of the field and reduces chromatic aberrations.\u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":42913023066289,"sku":"SHEDPH613F","price":209.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sharpstar-10x-flattener-for-61edph-iii-970322.jpg?v=1718364983"},{"product_id":"sharpstar-0-75x-f4-4-reducer-for-61edph-iii","title":"Sharpstar 0.75x f4.4 Reducer for 61EDPH III","description":"\u003ch1 data-mce-fragment=\"1\"\u003eSharpstar 0.75x f4.4 Reducer for FULL FRAME Cameras for Sharpstar 61EDPH Mark III Telescope - M48 Camera Connection\u003c\/h1\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eM68 Connection Thread to the 61EDPH Mark III telescope\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eDesigned for Full Frame cameras\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eThis Reducer\/Flattener has been specifically designed for the Sharpstar 61EDPH MARK III APO telescopes.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e(It might possibly work with other similar telescopes as well, but we cannot offer any recommendations about that...)\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDescription of the special full-frame reducer of 61EDPH Ⅲ:\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOne end of the thread is M68 × 1, connected to the focuser; the other end of the thread is M48 × 0.75 and has a built-in 2\" filter thread. The back focus is 55mm. If it needs to be extended, the adapter can be unscrewed to reveal the M54 × 0.75 male thread, and the back focus becomes 75mm. The focuser adopts a quadruplet air-spaced structure, supporting full-frame imaging. With the reducer, the focal ratio of 61EDPHⅢ is reduced to F4.4 and the focal length is reduced to 270mm, making the telescope the first choice for fast deep sky astrophotography.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"1\" cellspacing=\"1\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e61EDPHⅢ\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eFocal ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ef\/4.4\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eImage circle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e44mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eLens\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003equadruplet air-spaced structure\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBack focus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e55mm (including the M48 thread)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCoating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003efull-surface multi-layer coating\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e0.4kg\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/61EDPHIII\/sharpstar-0.75x-f4.4-reducer-for-full-frame-cameras-for-sharpstar-61edph-mark-iii-telescope-m48-camera-connection-2.webp\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/61EDPHIII\/sharpstar-0.75x-f4.4-reducer-for-full-frame-cameras-for-sharpstar-61edph-mark-iii-telescope-m48-camera-connection-2.webp\"\u003e\u003c\/p\u003e","brand":"Sharpstar","offers":[{"title":"Default Title","offer_id":42913027981489,"sku":"SHEDPH613R","price":209.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sharpstar-075x-f44-reducer-for-61edph-iii-659070.webp?v=1718364806"},{"product_id":"sky-rover-1x-field-flattener-for-60ed-apo-full-frame-astrophotography","title":"Sky Rover 1x Field Flattener for 60ED APO - Full Frame Astrophotography","description":"\u003ch1\u003eSky Rover 1x Field Flattener for 60ED APO - Perfect for Astrophotography\u003c\/h1\u003e\n\u003cp\u003eEnhance your astrophotography setup with the \u003cstrong\u003eSky Rover 1x Field Flattener\u003c\/strong\u003e, designed specifically for the 60ED APO telescope. This field flattener provides a 44 mm diameter field that meets the needs of full-frame photography, ensuring sharp, distortion-free images of the night sky.\u003c\/p\u003e\n\u003ch2\u003eOptimize Your 60ED APO Telescope\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSky Rover 1x Field Flattener\u003c\/strong\u003e is tailored for the 60ED APO telescope, connecting seamlessly via an M54x0.75 thread connection. For optimal performance, remove the 2-inch adapter on the Camera Angle Adjuster (CAA) when attaching the field flattener. This setup allows for precise composition without the need to rotate the optical tube assembly (OTA).\u003c\/p\u003e\n\u003ch2\u003eVersatile Design for Different Cameras\u003c\/h2\u003e\n\u003cp\u003eBy default, the Sky Rover 1x Field Flattener is configured for DSLR cameras. For CCD\/CMOS cameras, simply remove the SLR adapter to access up to 70.5 mm of back focus, accommodating filter wheels, OAGs, and other astrophotography accessories. This flexibility ensures compatibility with a wide range of imaging equipment.\u003c\/p\u003e\n\u003ch3\u003eCompatible with Takahashi FS-60CB\u003c\/h3\u003e\n\u003cp\u003eDue to the similar specifications of the \u003cstrong\u003eSky Rover 60ED APO telescope\u003c\/strong\u003e and the Takahashi FS-60CB, this field flattener is also suitable for use with the FS-60, providing exceptional image quality across both setups.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 1x Field Flattener for 60ED APO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnification:\u003c\/strong\u003e 1x\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObjective Interface:\u003c\/strong\u003e M54x0.75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOcular Interface:\u003c\/strong\u003e M48x0.75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera Back Focus:\u003c\/strong\u003e 54.8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Back Focus:\u003c\/strong\u003e 72 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSLR Adapter:\u003c\/strong\u003e 17.2 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust Cover:\u003c\/strong\u003e Rubber on objective side, metal on ocular side\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet Weight:\u003c\/strong\u003e 165 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBack focus Diagram\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSky Rover 1x Field Flattener\u003c\/strong\u003e is designed to work seamlessly with the SKY ROVER 60ED APO telescope. Refer to the back focus diagram for detailed setup instructions to ensure precise focusing and optimal image quality.\u003c\/p\u003e\n\u003ch2\u003eProduct Showcase\u003c\/h2\u003e\n\u003cp\u003eExplore the features of the \u003cstrong\u003eSky Rover 1x Field Flattener\u003c\/strong\u003e through our detailed product images, showcasing its robust construction and user-friendly design. Whether you're a seasoned Astro photographer or just starting, this field flattener will elevate your imaging experience.\u003c\/p\u003e\n\u003cp\u003eOrder the Sky Rover 1x Field Flattener today and take your astrophotography to the next level with distortion-free, sharp images of the cosmos.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Sky Rover","offers":[{"title":"Default Title","offer_id":43053141131441,"sku":"SR60ED APO","price":104.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sky-rover-1x-field-flattener-for-60ed-apo-full-frame-astrophotography-410672.webp?v=1718480278"},{"product_id":"skyrover-1x-field-flattener-for-80-90-102-130-155-apo-pro-refractors","title":"SkyRover 1x Field Flattener for 80\/90\/102\/130\/155 APO PRO Refractors","description":"\u003cdiv class=\"detailmodule_text\" data-mce-fragment=\"1\"\u003e\n\u003cp align=\"left\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIn 2021, Sky Rover launched a new 1xField flattener for 80\/90\/102\/130\/155 APO PRO, it adopts front thread M63X1 and rear thread M48X0.75, which can meet the illumination requirements of full-frame photography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp align=\"left\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eConsidering the use of CCD and OAG, the shell can be removed to use, which can have longer work distance to satisfy the use of filter wheel \/OGA\/CCD.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/02_8f7572a7-af46-489c-aa8c-3031e2d18829.jpg?v=1680501875\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/02_8f7572a7-af46-489c-aa8c-3031e2d18829.jpg?v=1680501875\"\u003e\u003c\/div\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003eSpecification\u003c\/h1\u003e\n\u003ctable height=\"204\" width=\"885\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eModel: 1x for 80APO PRO\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eModel: 1x for 90APO PRO\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eModel: 1x for 102APO PRO\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eModel: 1x for 130APO PRO\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003eModel: 1x for 155APO PRO\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eInterface Spec: M63X1\/M48X0.75\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eInterface Spec: M63X1\/M48X0.75\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eInterface Spec: M63X1\/M48X0.75\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eInterface Spec: M63X1\/M48X0.75\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eInterface Spec: M63X1\/M48X0.75\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eBack Focus: 55mm\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBack Focus: 55mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBack Focus: 55mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBack Focus: 55mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBack Focus: 55mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eNet weight: 420g\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNet weight: 400g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNet weight: 400g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNet weight: 380g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNet weight: 380g\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBack Focus Diagram(55mm)\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/664a570e5a4aa7ed7abb2b085e680ea1.png?v=1680501902\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/664a570e5a4aa7ed7abb2b085e680ea1.png?v=1680501902\"\u003e\u003c\/div\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eConnection Diagram\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/06_944aab09-5c4a-471f-aff5-9002f2b1f4b4.jpg?v=1680501933\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/06_944aab09-5c4a-471f-aff5-9002f2b1f4b4.jpg?v=1680501933\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"detailmodule_text\" data-mce-fragment=\"1\"\u003e\n\u003cp align=\"left\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e               ①Removing the adaptor at the end\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"left\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e               ②Installing filter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"left\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e               ③Screwing adaptor into flattener\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"left\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e             *Full frame camera will be with light vignetting when install inner 2\" filter\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/08.jpg?v=1680501957\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/08.jpg?v=1680501957\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"detailmodule_text\" data-mce-fragment=\"1\"\u003e\n\u003cp align=\"left\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e①1x flattener        ②Filter         ③Adaptor (M48x0.75 thread)        ④SLR mount(M48 T)         ⑤SLR       ⑥CCD mount        ⑦CCD\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/10_a372501a-ea68-4fee-9075-721d5f115bd2.jpg?v=1680501985\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/10_a372501a-ea68-4fee-9075-721d5f115bd2.jpg?v=1680501985\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"detailmodule_text\" data-mce-fragment=\"1\"\u003e\n\u003cp align=\"center\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e①1x flattener       ②Filter       ③Adaptor (M48x0.75 thread)         ④M48 adaptor   ⑤OAG       ⑥Filter wheel         ⑦CCD\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch1 align=\"center\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eProduct Show\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/1_8f445e19-e2e7-4d90-ab74-9c818ed0dfbf.png?v=1686903888\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/1_8f445e19-e2e7-4d90-ab74-9c818ed0dfbf.png?v=1686903888\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Sky Rover","offers":[{"title":"80mm","offer_id":43053153419441,"sku":"","price":159.99,"currency_code":"GBP","in_stock":true},{"title":"90mm","offer_id":43053153452209,"sku":"","price":159.99,"currency_code":"GBP","in_stock":true},{"title":"102mm","offer_id":43053153484977,"sku":"","price":159.99,"currency_code":"GBP","in_stock":true},{"title":"130mm","offer_id":43053153517745,"sku":"","price":159.99,"currency_code":"GBP","in_stock":true},{"title":"155mm","offer_id":43053153550513,"sku":"","price":159.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1x-field-flattener-for-8090102130155-apo-pro-823067.webp?v=1782291063"},{"product_id":"skyrover-1x-field-flattener-for-72-ed-apo-perfect-for-wide-field-views","title":"SkyRover 1x Field Flattener for 72 ED APO - Perfect for Wide-Field Views","description":"\u003ch3 style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eSKY ROVER specially designed a 1X field flattener for photography for 72ED APO. It is connected with the telescope by threaded connection (M54x0.75, when in use, the 2-inch connector on CAA should be rotated and removed), and it is matched with the image field rotator (CAA) at the tail of the focusing tube, so it can meet your composition requirements without rotating the main mirror. At the same time, its lens body adopts two-section design, and the default factory is SLR camera shooting mode. If you use CCD\/CMOS, you can remove the SLR adapter and install the flattener before using.\u003c\/h3\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e                                   Model: 1x for 72ED APO\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e                                   Item No.:25715\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e                                   Interface Spec: M54X0.75\/M48X0.75\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e                                 Magnification: 1x\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e                                   Back Focus: 55mm\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e                                   Dust Cover: rubber on objective lens and metal on eyepiece\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e                                   Size: 55x50mm(width x height)\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e                                 Net weight: 120g\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eProduct Show\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e","brand":"Sky Rover","offers":[{"title":"Default Title","offer_id":43053170065585,"sku":null,"price":149.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1x-field-flattener-for-72-ed-apo-444913.webp?v=1782291020"},{"product_id":"sky-rover-0-8x-reducer-flattener-for-130-155-apo-pro","title":"Sky Rover 0.8x reducer flattener for 130\/155 APO PRO","description":"\u003cdiv class=\"detailmodule_text\"\u003e\n\u003cp align=\"left\"\u003e\u003cspan\u003eSky Rover 0.8x reducer flattener for 130\/155 APO PRO can meet the needs of full frame photography.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eWhen the 0.8x reducer flattener is matched with the telescope, the focal ratio is shortened. After focal reduction, the photographed starry sky is wider, the star points are more delicate, and the signal-to-noise ratio is better under the same exposure.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eA filter can be installed inside the new 0.8x reducer flattener. The thread of one end is M92×1, and the other thread is M48×0.75, which is for camera bayonet. This end contains the built-in M48X0.75 thread, and the filter can be installed at this thread after the interface with anti-slip texture is twisted clockwise.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe default back focus of the 0.8x reducer flattener is 55mm. By using the 360-degree image field rotator at the tail of the focusing tube can meet your composition requirements without rotating the telescope. And you can use filter wheel \/OAG\/ astronomical camera at the same time (please use accessories within the intercept range).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/2_00162b07-0611-4068-af7e-ad6b0f3951cb.jpg?v=1679969713\"\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable height=\"126\" align=\"center\" width=\"592\" data-mce-selected=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd data-mce-selected=\"1\"\u003eProduct Name:0.8X for 130 APO PRO\u003c\/td\u003e\n\u003ctd data-mce-selected=\"1\"\u003eProduct Name:0.8X for 155 APO PRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-mce-selected=\"1\"\u003eInterface Spec:M92X1\/M48X0.75\u003c\/td\u003e\n\u003ctd data-mce-selected=\"1\"\u003eInterface Spec:M92X1\/M48X0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-mce-selected=\"1\"\u003eBack Focus: 55mm\u003c\/td\u003e\n\u003ctd data-mce-selected=\"1\"\u003eBack Focus: 55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-mce-selected=\"1\"\u003eDust Cover: rubber\u003c\/td\u003e\n\u003ctd data-mce-selected=\"1\"\u003e\u003cspan\u003eDust Cover: rubber\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-mce-selected=\"1\"\u003eSize: 92x100mm(W x H)\u003c\/td\u003e\n\u003ctd data-mce-selected=\"1\"\u003eSize: 92x96mm(W x H)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cstrong\u003eConnection Diagram\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/3_34b0258c-5e62-4f89-9f3e-dabff1ecf6e6_480x480.jpg?v=1679970019\"\u003e①130 APO PRO\u003c\/p\u003e\n\u003cp\u003e② 3.7-inch interface     \u003c\/p\u003e\n\u003cp\u003e③ 0.8x reducer flattener     \u003c\/p\u003e\n\u003cp\u003e④ SLR Adapter (M48 T ring)\u003c\/p\u003e\n\u003cp\u003e⑤ SLR\u003c\/p\u003e\n\u003cp\u003e⑥ CCD Adapter\u003c\/p\u003e\n\u003cp\u003e⑦ CCD\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/4_d7d5d869-36ae-4310-9a82-598f1e61eecc_480x480.jpg?v=1679970135\"\u003e①155 APO PRO\u003c\/p\u003e\n\u003cp\u003e② 3.7-inch interface     \u003c\/p\u003e\n\u003cp\u003e③ 0.8x reducer flattener     \u003c\/p\u003e\n\u003cp\u003e④ SLR Adapter (M48 T ring)     \u003c\/p\u003e\n\u003cp\u003e⑤ SLR     \u003c\/p\u003e\n\u003cp\u003e⑥ CCD Adapter     \u003c\/p\u003e\n\u003cp\u003e⑦ CCD\u003c\/p\u003e\n\u003ch3\u003eAttaching the Filter\u003cbr data-mce-fragment=\"1\"\u003e* The attaching methods for 130\/155 APO PRO are the same.\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/5_c1edb96e-35fa-4052-8d1c-7e4973444791_480x480.jpg?v=1679970260\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e①0.8x reducer flattener     \u003c\/div\u003e\n\u003cdiv\u003e② Filter\u003c\/div\u003e\n\u003cdiv\u003e③ Adapter (with M48x0.75 thread inside)\u003c\/div\u003e\n\u003cdiv\u003e④ SLR Adapter (M48 T ring)     \u003c\/div\u003e\n\u003cdiv\u003e⑤ SLR\u003c\/div\u003e\n\u003cdiv\u003e⑥ CCD Adapter     \u003c\/div\u003e\n\u003cdiv\u003e⑦ CCD\u003cbr\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWith OAG, Filter Wheel\u003c\/h3\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/6_f7d544a0-68cc-4146-82c1-97ccab682ff7_480x480.jpg?v=1679970342\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e①0.8x reducer flattener       \u003c\/div\u003e\n\u003cdiv\u003e② M48 adaper\u003c\/div\u003e\n\u003cdiv\u003e③ OAG         \u003c\/div\u003e\n\u003cdiv\u003e④ Filter wheel         \u003c\/div\u003e\n\u003cdiv\u003e⑤ CCD\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e* Please turn off the 2.5-inch connector on the telescope clockwise when installing the reducer flattener.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e* The end of the flat mirror with anti-slip texture is with M48x0.75 threadinside, where you can install the filter.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e* SLR adapter, CCD adapter, SLR, CCD, filter wheel and OGA need to be purchased separately.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch2\u003eBack Focus Diagram\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/7_7b0f1ef0-a595-4579-9c51-083a51306cd6.jpg?v=1679970526\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"detailmodule_text\"\u003e\n\u003ch2 align=\"center\"\u003e\u003cstrong\u003eProduct Show\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0661\/3873\/4829\/files\/8_87e82a75-a146-4f29-b8cc-ea5914923437.jpg?v=1679970566\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Sky Rover","offers":[{"title":"Default Title","offer_id":43053184811185,"sku":null,"price":269.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sky-rover-08x-reducer-flattener-for-130155-apo-pro-678908.webp?v=1718365000"},{"product_id":"askar-120apo-special-0-8x-reducer-for-apochromatic-telescopes","title":"Askar 120APO Special 0.8x Reducer for Apochromatic Telescopes","description":"\u003cdiv class=\"flex-1 overflow-hidden\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-hvucb-79elbk h-full\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-hvucb-1n7m0yu\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-9\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"w-full text-token-text-primary\" dir=\"auto\" data-testid=\"conversation-turn-17\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"px-4 py-2 justify-center text-base md:gap-6 m-auto\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"flex flex-1 text-base mx-auto gap-3 juice:gap-4 juice:md:gap-6 md:px-5 lg:px-1 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem]\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"relative flex w-full flex-col agent-turn\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"flex-col gap-1 md:gap-3\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"flex flex-grow flex-col max-w-full\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"f08a730a-4cd8-45bb-84a1-dcb5f4f4c8f4\" dir=\"auto\" class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+\u0026amp;]:mt-5 overflow-x-auto\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert dark\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eIntroducing the ASKAR 0.8x Full-frame Reducer\/Flattener for 120APO Telescopes, an essential accessory designed specifically for the Askar 120APO. This 0.8x reducer not only reduces the focal ratio to f\/5.6, enhancing the telescope's capability for wide-field viewing and faster exposure times but also flattens the field, perfect for capturing expansive celestial scenes like nebulae, star clusters, and other faint, fast-moving objects.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe reducer features a triplet lens design and supports a 44mm full-frame image circle. It is lightweight at only 0.75kg and offers a standard back focus distance of 55mm from the M48 male thread. For versatility in connecting to different setups, it includes front threads at M84\u003cem data-mce-fragment=\"1\"\u003e1 and adapters in M68\u003c\/em\u003e1, M54\u003cem data-mce-fragment=\"1\"\u003e0.75, and M48\u003c\/em\u003e0.75 sizes. The reducer also incorporates a built-in M48*0.75 2-inch filter thread, allowing for direct installation and use.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eMachined from CNC materials, the reducer ensures durability and precision. It includes metal caps on both ends to protect against dust when not in use.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFocal Length (with 120APO): 672mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eFocal Ratio (with 120APO): f\/5.6\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLens Design: Triplet\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eBack Focus: 55mm (from the base of M48 thread)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWeight: 0.75kg\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eRear-end Thread Types: M68×1, M54×0.75, M54×0.75-M48×0.75 (with internal M48×0.75 filter thread)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e0.8x Reducer Size Diagram\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/ASKAR\/120APO\/askar-0.8x-full-frame-reducer-flattener-for-120apo-telescopes-schematic.webp\"\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/ASKAR\/120APO\/askar-0.8x-full-frame-reducer-flattener-for-120apo-telescopes-schematic.webp\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003ch3\u003e0.8x Reducer Installation\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/103APO\/askar-0.8x-full-frame-reducer-flattener-for-103apo-telescopes-2.webp\"\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/SHARPSTAR\/103APO\/askar-0.8x-full-frame-reducer-flattener-for-103apo-telescopes-2.webp\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003ch3\u003eSpot Diagram\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/ASKAR\/120APO\/askar-0.8x-full-frame-reducer-flattener-for-120apo-telescopes-spot.webp\"\u003e\u003cimg src=\"https:\/\/www.365astronomy.com\/image\/cache\/wp\/lj\/product\/ASKAR\/120APO\/askar-0.8x-full-frame-reducer-flattener-for-120apo-telescopes-spot.webp\" alt=\"\"\u003e\u003c\/a\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","brand":"Askar","offers":[{"title":"Default Title","offer_id":43791007154353,"sku":"ASKRE12008","price":209.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-120apo-special-08x-reducer-735612.webp?v=1782294851"},{"product_id":"askar-120apo-field-flattener","title":"Askar 120APO Special Flattener for Apochromatic Telescopes","description":"\u003cdiv class=\"flex-1 overflow-hidden\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-hvucb-79elbk h-full\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-hvucb-1n7m0yu\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-9\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"w-full text-token-text-primary\" dir=\"auto\" data-testid=\"conversation-turn-17\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"px-4 py-2 justify-center text-base md:gap-6 m-auto\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"flex flex-1 text-base mx-auto gap-3 juice:gap-4 juice:md:gap-6 md:px-5 lg:px-1 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem]\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"relative flex w-full flex-col agent-turn\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"flex-col gap-1 md:gap-3\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"flex flex-grow flex-col max-w-full\" data-mce-fragment=\"1\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"f08a730a-4cd8-45bb-84a1-dcb5f4f4c8f4\" dir=\"auto\" class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+\u0026amp;]:mt-5 overflow-x-auto\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert dark\" data-mce-fragment=\"1\"\u003e\n\u003ch2\u003eAskar 120APO Special Flattener\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eIntroducing the Askar Full-Frame 1.0x Flattener for 120APO Telescopes, designed to maintain the original focal ratio of F\/7 when connected to the Askar 120APO. This flattener excels in correcting field curvature and coma, delivering sharper images with flatter field edges and more defined star points.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"flex-1 overflow-hidden\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-hvucb-79elbk h-full\"\u003e\n\u003cdiv class=\"react-scroll-to-bottom--css-hvucb-1n7m0yu\"\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-9\"\u003e\n\u003cdiv data-testid=\"conversation-turn-21\" dir=\"auto\" class=\"w-full text-token-text-primary\"\u003e\n\u003cdiv class=\"px-4 py-2 justify-center text-base md:gap-6 m-auto\"\u003e\n\u003cdiv class=\"flex flex-1 text-base mx-auto gap-3 juice:gap-4 juice:md:gap-6 md:px-5 lg:px-1 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem]\"\u003e\n\u003cdiv class=\"relative flex w-full flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex-col gap-1 md:gap-3\"\u003e\n\u003cdiv class=\"flex flex-grow flex-col max-w-full\"\u003e\n\u003cdiv class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+\u0026amp;]:mt-5 overflow-x-auto\" dir=\"auto\" data-message-id=\"696f09c3-276d-47fa-b7a6-de7f70e44476\" data-message-author-role=\"assistant\"\u003e\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert dark\"\u003e\n\u003cp\u003eFeaturing a triplet optical design, it supports a 44mm full-frame image circle, ideal for extensive astrophotography captures. The device offers a standard back focus distance of 55mm from the M48 thread and includes an M84x1 front thread.\u003c\/p\u003e\n\u003cp\u003eFor versatile camera connections, it comes equipped with M54\u003cem\u003e0.75 and M48\u003c\/em\u003e0.75 adapters at the camera end. It also features a built-in M48*0.75 2-inch filter thread, allowing for the direct installation and use of 2\" filters. Threaded metal caps are included to keep dust out when the flattener is not in use.\u003c\/p\u003e\n\u003cp\u003eLightweight at just 0.75kg, this flattener is easy to handle and install, making it an excellent addition to your astrophotography gear.\u003c\/p\u003e\n\u003cdiv id=\"saf-detail-0\" class=\"cbox-15 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-18 s_summary\"\u003eProduct introduction\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix\"\u003e\n\u003cdiv id=\"ce_detail-285816\" data-layout=\"flow\" class=\"ce_detail\"\u003e\n\u003cdiv id=\"ie_grid-1694068561982\" 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-1694068561982-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_grid-1694068561987\" 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-1694068561987-0\" class=\"e_box e_box-000 d_gridCell_0 p_gridCell\"\u003e\n\u003cdiv id=\"ie_fimg-1694068561992\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/650164b8-8163-4a18-b171-fd031815e63b.jpg\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_line-1694068562237\" class=\"ie_line\"\u003e\n\u003cspan\u003e \u003c\/span\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_text-1694068562242\" class=\"reset_style\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThe 1x flattener does not change the telescope's focal ratio itself. After connecting with the Askar 120APO, it still maintained a focal ratio \u003c\/span\u003e\u003cspan\u003eof 7. The flattener corrects field curvature and coma, resulting in flatter field edges and finer star points.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 1.0x flattener adopts a triplet design and supports a 44mm full-frame image circle. The overall weight is 0.75kg. The back focus from the M48 thread is a standard 55mm. The front thread is M84*1. At the camera end, it is equipped with M54*0.75 and M48*0.75 two sizes of adapters, which are convenient for connection. At the same time, it has a built-in M48*0.75 2-inch filter thread, which can be directly installed and used. The overall CNC machined, both end threaded metal caps prevent ash when not in use.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"ie_fimg-1694141188895\" class=\"ie_fimg\"\u003e\n\u003cdiv\u003e\u003cimg width=\"100%\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/d24833ee-86a4-4e23-bbe5-59bc96db0719.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-15 p_loopItem\"\u003e\n\u003ch3 class=\"e_h3-18 s_summary\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-17 s_title clearfix response-transition\"\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003e1x Flattener Parameter\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003e（After attaching）120APO Focal length\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e840mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003e（After attaching）120APO Focal 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\u003cb\u003eLens Number\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eTriplet design\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（from the base of M48 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\u003eWeight\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003e0.75kg\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\u003eM54×0.75\u003cbr\u003eM54×0.75-M48×0.75(M48×0.75 filter thread inside)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003e1x Flattener 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 src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/a7301578-b991-41c4-bf39-450d04f3a06d.jpg\" id=\"1699994332589752320\"\u003e\u003c\/p\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"3\"\u003e\n\u003cp\u003e\u003cstrong\u003e1x Flattener 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 src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/3e55c000-573c-46d6-8ce4-8d87323e2abc.jpg\" id=\"1699975732590174208\"\u003e\u003c\/p\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\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\u003cp\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/new2022072923460240318\/cms\/image\/6b3ebd3f-fc2f-42bb-8b90-b0eff7cf6e3b.jpg\" id=\"1699963546200313856\"\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\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","brand":"Askar","offers":[{"title":"Default Title","offer_id":43791013871793,"sku":"ASKFL12010","price":209.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-120apo-special-flattener-720630.jpg?v=1782294856"},{"product_id":"long-perng-d80mm-field-flattener","title":"Long Perng D80mm Field Flattener","description":"\u003cp\u003eDark Clear Skies introduce its \u003cspan\u003eDCS D80mm Field Flattener\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFeature Overview:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnhances refractors for astrophotography by optimizing performance.\u003c\/li\u003e\n\u003cli\u003eCorrects aberrations to produce sharp, clear, and uniformly flat images.\u003c\/li\u003e\n\u003cli\u003eFeatures fully multi-coated optics for superior light transmission.\u003c\/li\u003e\n\u003cli\u003eIncludes interchangeable M42 \u0026amp; M48 T-Thread adapters for versatile camera connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: 1X Field Flattener\u003c\/li\u003e\n\u003cli\u003eBack focus: 55mm\u003c\/li\u003e\n\u003cli\u003eCompatibility: Works with f\/5 to f\/7.5 refractors\u003c\/li\u003e\n\u003cli\u003eImage Circle: 44mm diameter\u003c\/li\u003e\n\u003cli\u003eConnection: 2\" barrel\u003c\/li\u003e\n\u003cli\u003eOptional threaded adapter for LPO refractors\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDCS D80MM Includes both M42 \u0026amp; M48 T-thread adapters\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Long Perng","offers":[{"title":"Default Title","offer_id":43997832511665,"sku":"dcs D80MM","price":114.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/dcs-d80mm-field-flattener-129960.jpg?v=1718364459"},{"product_id":"long-perng-d80mm-0-8-reducer","title":"Long Perng D80mm 0.8 Reducer","description":"\u003cp\u003eLong Perng introduce its \u003cspan\u003eD80mm 0.8 Reducer\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFeature Overview:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe 0.8x reducer broadens the field of view and reduces exposure time, optimizing your refractor for astrophotography.\u003c\/li\u003e\n\u003cli\u003eCorrects aberrations to deliver crisp, sharp, clear, and flat images.\u003c\/li\u003e\n\u003cli\u003eEquipped with fully multi-coated optics for excellent light transmission.\u003c\/li\u003e\n\u003cli\u003eIncludes interchangeable M42 \u0026amp; M48 T-Thread adapters for camera connectivity.\u003c\/li\u003e\n\u003cli\u003eFeatures a premium high-gloss anodized finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: 0.8x Focal Reducer\u003c\/li\u003e\n\u003cli\u003eBack focus: 55mm\u003c\/li\u003e\n\u003cli\u003eCompatibility: Works with f\/5 to f\/7.5 refractors\u003c\/li\u003e\n\u003cli\u003eImage Circle: 42mm diameter\u003c\/li\u003e\n\u003cli\u003eConnection: 2\" barrel\u003c\/li\u003e\n\u003cli\u003eOptional threaded adapter for LPO refractors\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e F0.8X-AC : W\/I both M42 \/ M48 T-thread\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Long Perng","offers":[{"title":"Default Title","offer_id":43997890085041,"sku":"DCS D80mm 0.8 Reducer","price":109.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/dcs-d80mm-08-reducer-543469.jpg?v=1718364466"},{"product_id":"baader-m68-field-flattener","title":"Baader M68 Field Flattener","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003ch1\u003eBaader 3-Lens Field Corrector for APO 95\/560 Travel Companion\u003c\/h1\u003e\n  \u003cp\u003eEnhance the optical performance of your Baader APO 95\/560 Travel Companion refractor with the precision-engineered 3-Lens Field Corrector. Specifically designed for this premium telescope, the corrector delivers an expansive 52mm corrected field of view, ensuring sharp, distortion-free imaging across the entire frame. Whether for astrophotography or visual observation, this accessory ensures uncompromising performance.\u003c\/p\u003e\n\n  \u003ch2\u003eKey Features:\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAdvanced Triplet Design:\u003c\/strong\u003e Three-lens system for superior field flattening and aberration correction.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGenerous Backfocus:\u003c\/strong\u003e Provides a precise 76.11mm backfocus for optimal configuration and imaging flexibility.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWide Corrected Field:\u003c\/strong\u003e 52mm corrected field of view, ideal for full-frame cameras and wide-field astrophotography.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRobust Connectivity:\u003c\/strong\u003e Equipped with an M68a thread on the telescope side and an M68i thread on the camera side for secure attachment.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptimized for APO 95\/560:\u003c\/strong\u003e Tailored for perfect compatibility with Baader's flagship travel refractor telescope.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eSpecifications:\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Baader Planetarium\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Baader APO 95\/560 Travel Companion\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBackfocus:\u003c\/strong\u003e 76.11mm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCorrected Field of View:\u003c\/strong\u003e 52mm\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTelescope Side Connection:\u003c\/strong\u003e M68a thread\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCamera Side Connection:\u003c\/strong\u003e M68i thread\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptical Design:\u003c\/strong\u003e Triplet field flattener\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhy Choose the Baader 3-Lens Field Corrector?\u003c\/h3\u003e\n  \u003cp\u003eThis field corrector is an essential accessory for users of the Baader APO 95\/560 Travel Companion. It ensures unparalleled image clarity, making it ideal for astrophotographers and observers seeking precision, sharpness, and reliability in their setups. With its large corrected field and robust design, it's a perfect match for high-performance telescopes and cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Baader","offers":[{"title":"Default Title","offer_id":54711901290872,"sku":"2458260","price":624.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/baader-m68-field-flattener-600x450.jpg?v=1782295685"},{"product_id":"baader-mark-iii-2-multi-purpose-coma-corrector-mpcc","title":"Baader Mark III 2″ Multi-Purpose Coma Corrector (MPCC)","description":"\u003ch1\u003eBaader MPCC Mark III Coma Corrector for Newtonian Telescopes\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eAchieve Sharp, Coma-Free Stars Across the Field\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Baader MPCC Mark III is an advanced coma corrector for Newtonian telescopes, designed to eliminate coma and ensure sharpness across the entire field of view without changing your telescope’s focal length or image scale. Ideal for both visual and photographic applications, it performs exceptionally well down to f\/3.5, providing pin-sharp stars from edge to edge.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Focal Length Change:\u003c\/strong\u003e Retains the original focal length and field size, eliminating coma without altering the optical characteristics of your telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVignetting-Free Performance:\u003c\/strong\u003e Works for exposures down to f\/3.5 with large lenses, ensuring full illumination for large sensors without vignetting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Sharpness:\u003c\/strong\u003e Pinpoint stars across the full image field without a central soft spot, even with fast telescopes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhantom Coating™ Group:\u003c\/strong\u003e Multi-coating for maximum transmission and minimal reflections across a broad spectral range (UV to NIR).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual \u0026amp; Photographic Versions Available:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotographic Version (2458400A):\u003c\/strong\u003e Removable 2\" stop ring collar, works with T-2 (M42) or M48 threads for DSLR cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual \u0026amp; Photographic Version (2458403):\u003c\/strong\u003e Includes all parts of the photographic version and additional adapters for 1.25\" eyepieces, and an adjustable VariLock T-2 extension tube for precise focusing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePhotographic Application\u003c\/h2\u003e\n\u003cp\u003eThe MPCC Mark III base element is ready for use with a DSLR and a standard T-ring, suitable for T-2 threads on most T-rings. For larger sensors, the T-2 thread can be removed, and the M48 thread provides a larger aperture, ensuring full illumination even for full-frame sensors. Compatible with Canon EOS T-rings with an optional M48 spacer ring.\u003c\/p\u003e\n\u003ch2\u003eVisual Application\u003c\/h2\u003e\n\u003cp\u003eThe MPCC Mark III provides sharp, coma-free views for visual astronomers. The V-1 Set (2458403) includes all the necessary adapters for 1.25\" eyepieces, and the VariLock extension tube allows for precise adjustments to achieve optimal focus.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the Baader MPCC Mark III?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRetains your telescope's original focal length and image scale.\u003c\/li\u003e\n\u003cli\u003eEliminates coma across the full field without distortion.\u003c\/li\u003e\n\u003cli\u003eWorks down to f\/3.5 for fast Newtonian telescopes.\u003c\/li\u003e\n\u003cli\u003eIdeal for both visual and astrophotography use.\u003c\/li\u003e\n\u003cli\u003eExceptional quality with Baader’s Phantom Coating™ Group multi-coating for maximum light transmission.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003ePhotographic Version (2458400A)\u003c\/th\u003e\n\u003cth\u003eVisual \u0026amp; Photographic Version (2458403)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.084\u003c\/td\u003e\n\u003ctd\u003e0.274\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (Lens)\u003c\/td\u003e\n\u003ctd\u003eM48 Thread\u003c\/td\u003e\n\u003ctd\u003eM48 Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (Lens)\u003c\/td\u003e\n\u003ctd\u003e2\" Barrel\u003c\/td\u003e\n\u003ctd\u003e2\" Barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (Eyepiece\/Camera)\u003c\/td\u003e\n\u003ctd\u003eClamp, 1.25\" (Visual Version)\u003c\/td\u003e\n\u003ctd\u003eClamp, 1.25\" \u0026amp; T-2\/M48 Threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (Eyepiece\/Camera)\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42) or M48 Threads\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42) or M48 Threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating™ Group\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating™ Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Range (f\/)\u003c\/td\u003e\n\u003ctd\u003ef\/3.5 – f\/6\u003c\/td\u003e\n\u003ctd\u003ef\/3.5 – f\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e44\u003c\/td\u003e\n\u003ctd\u003e44\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e2\"\/1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOrder Now\u003c\/h2\u003e\n\u003cp\u003eUpgrade your astrophotography or visual astronomy experience with the Baader MPCC Mark III. Achieve coma-free, sharp stars across the entire field and get the best out of your Newtonian telescope.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Baader","offers":[{"title":"Photographic Version","offer_id":54711905354104,"sku":"2458400A","price":160.0,"currency_code":"GBP","in_stock":true},{"title":"Photogrsaphic \u0026 Visual","offer_id":54711905386872,"sku":"2458403","price":194.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/2-mpcc-mark-iii-newton-coma-correktor-photographic-version_a6f801b0-4752-48f4-935c-046b038f5d4a.jpg?v=1782291083"},{"product_id":"baader-rowe-coma-corrector-rcc-i","title":"Baader Rowe Coma Corrector (RCC I)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eRowe Coma Corrector (RCC I) for Newtonian Telescopes\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe Rowe Coma Corrector (RCC I) is a premium triplet lens designed to eliminate coma in Newtonian telescopes, providing sharp, pinpoint stars across the entire field. Compatible with telescopes ranging from f\/3.5 to f\/6, it performs optimally at f\/4. With a backfocus of 91.5mm, it allows for the use of filter wheels or other accessories without altering the focal ratio. The RCC I ensures a 1:1 reproduction scale, delivering exceptional image quality for both visual and photographic applications.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWorks with Newtonian telescopes from f\/3.5 to f\/6, perfect for f\/4.\u003c\/li\u003e\n\u003cli\u003eBackfocus of 91.5mm, ideal for adding accessories like filter wheels without changing the focal ratio.\u003c\/li\u003e\n\u003cli\u003e1:1 reproduction scale for high-quality images.\u003c\/li\u003e\n\u003cli\u003eEliminates coma across the field, providing sharp star points.\u003c\/li\u003e\n\u003cli\u003eOptimized for visual and photographic use, enhancing overall image quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Baader Rowe Coma Corrector (RCC I) is designed to correct Coma in fast Newtonian imaging systems. It is a triplet lens design and each air\/glass-surface of the triplet RCC optical system is coated with our Phantom Group Coating for the best-possible transmission.\u003c\/p\u003e\n\u003cp\u003eThe RCC I provides a long back-focus of 91.5 mm, measured from the T-2-thread, enabling the use of Off-Axis Guiders, Adaptive Optics and Filter Wheels. Autoguiding can be done easily with the RCC, an RCC Off Axis Guider and an Autoguiding Camera.\u003c\/p\u003e\n\u003cp\u003eThe main features are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe RCC works from f\/3.5 to f\/6 – it is perfect on f\/4\u003c\/li\u003e\n\u003cli\u003ereproduction scale is 1:1 – in contrast to many other coma correctors, the RCC is no Barlow lens which rely on a magnification to make the larger back-focus to the sensor possible\u003c\/li\u003e\n\u003cli\u003eThe RCC is the only coma corrector which gives you enough back-focus for filter wheels or other accessories without changing the focal ratio\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTo attach the RCC directly to a camera (without an Off-Axis-Guider), we recommend the Baader VariLock 46 T-2 Extension (# 2956946 T-2 part-no. #25V). This has a graduated mm-scale, but also a marking at 36.5mm, to show you the perfect working distance for a DSLR with T-2-adaptor. You can remove the stopper ring to place the RCC deeper inside of your focuser.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Data – Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ereproduction scale: 1:1\u003c\/li\u003e\n\u003cli\u003erecommended focal ratios: f\/3.5 – f\/6 (optimised for f\/4)\u003c\/li\u003e\n\u003cli\u003eFocal position (perfect distance to the sensor): 91.5 mm measured from the T-2 thread \/ 94.5 mm from the M48 thread\u003c\/li\u003e\n\u003cli\u003einner connection (lens side): 2″ nosepiece with M48i filter thread for 2″ eyepiece filters\u003c\/li\u003e\n\u003cli\u003eouter connection (telescope side): T2 (M 42 x 0.75_a; without the stop ring M 48_a)\u003c\/li\u003e\n\u003cli\u003elongest overall depth: 73 mm \/ without the stop ring 75 mm \/ without the stop ring and RCC Off Axis Guider 84mm\u003c\/li\u003e\n\u003cli\u003eDiameter of the housing: 50.8mm\/2″\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Baader","offers":[{"title":"Default Title","offer_id":54711948771704,"sku":"2956800","price":163.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/rcc-i-rowe-coma-corrector2-600x400.jpg?v=1731779397"},{"product_id":"svbony-sv199-1-25-inch-atmospheric-dispersion-corrector","title":"SVBONY SV199 1.25″ Atmospheric Dispersion Corrector (ADC)","description":"\u003cdiv class=\"rte product-description svbony-sv199-adc\"\u003e\n\u003cp\u003e\u003cstrong\u003eSVBONY SV199 1.25″ Atmospheric Dispersion Corrector (ADC)\u003c\/strong\u003e is designed to correct atmospheric dispersion that causes colour fringing when observing planets at low altitudes. It significantly improves sharpness, contrast, and colour accuracy for planetary observation and imaging.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sv199-w9157b-0_20251124094353_5029.webp?v=1771336678\" alt=\"Black SVBONY telescope lens with red scale on a white background\"\u003e\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrects atmospheric dispersion\u003c\/strong\u003e\u003cbr\u003eReduces colour separation caused by Earth’s atmosphere, delivering cleaner and sharper planetary images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproves planetary detail\u003c\/strong\u003e\u003cbr\u003eEnhances contrast and fine detail on planets such as Jupiter, Saturn, and Mars, especially at low elevations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy to use and adjust\u003c\/strong\u003e\u003cbr\u003eInstalls between the telescope and eyepiece or camera, with smooth adjustment levers for precise correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable optical construction\u003c\/strong\u003e\u003cbr\u003eHigh-quality prisms with full multi-coating (FMC) reduce reflections, ghosting, and light scatter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide compatibility\u003c\/strong\u003e\u003cbr\u003eFits standard 1.25″ focusers, eyepieces, and astronomical cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"product-media\"\u003e\u003cimg style=\"width: 100%; height: auto; object-fit: contain;\" loading=\"lazy\" alt=\"SVBONY SV199 atmospheric dispersion corrector\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387868175796344747593816.jpg?v=1771336677\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe SV199 ADC uses \u003cstrong\u003efull multi-coated prisms\u003c\/strong\u003e to minimise light scattering and chromatic aberration while maintaining high contrast. The coatings are scratch-resistant and designed for reliable performance under varying observing conditions.\u003c\/p\u003e\n\u003cdiv class=\"product-media-grid\"\u003e\n\u003cimg style=\"width: 100%; height: auto; object-fit: contain;\" loading=\"lazy\" alt=\"SV199 ADC prism optical diagram\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387868178632312151917540.jpg?v=1771336678\"\u003e \u003cimg style=\"width: 100%; height: auto; object-fit: contain;\" loading=\"lazy\" alt=\"SV199 ADC bubble level\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387868180682643686727205.jpg?v=1771336677\"\u003e\n\u003c\/div\u003e\n\u003cp\u003eA built-in \u003cstrong\u003ebubble level\u003c\/strong\u003e allows quick and accurate alignment of the ADC, ensuring correct orientation during use.\u003c\/p\u003e\n\u003cp\u003eThe SV199 features a \u003cstrong\u003e1.25″ barrel with external T2 thread\u003c\/strong\u003e, allowing it to be used visually with eyepieces or paired with planetary astronomy cameras for imaging.\u003c\/p\u003e\n\u003cdiv class=\"product-media\"\u003e\u003cimg style=\"width: 100%; height: auto; object-fit: contain;\" loading=\"lazy\" alt=\"SV199 ADC against night sky\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387868138379665323782195.jpg?v=1771336679\"\u003e\u003c\/div\u003e\n\u003ch2\u003eHow to Use the SV199 ADC\u003c\/h2\u003e\n\u003cdiv class=\"product-media\"\u003e\u003cimg style=\"width: 100%; height: auto; object-fit: contain;\" loading=\"lazy\" alt=\"SV199 ADC usage and adjustment guide\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387868155226462117098321.jpg?v=1771336678\"\u003e\u003c\/div\u003e\n\u003ch2\u003eApplication Scenarios\u003c\/h2\u003e\n\u003cdiv class=\"product-media\"\u003e\u003cimg style=\"width: 100%; height: auto; object-fit: contain;\" loading=\"lazy\" alt=\"Planetary observation with ADC showing Jupiter Saturn and Moon\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387868161570075158597585.jpg?v=1771336677\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":55455800656248,"sku":"W9157B","price":67.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/sv199-w9157b-0_20251124094353_5029.webp?v=1771336678"},{"product_id":"svbony-0-5x-focal-reducer-1-25-inch","title":"SVBONY 0.5× Focal Reducer 1.25″ for Eyepiece Photography","description":"\u003cp\u003eThe SVBONY 0.5× Focal Reducer is a compact 1.25-inch accessory designed to widen the field of view for eyepiece-based astrophotography and visual observing. By reducing the effective focal length, it allows larger celestial objects to fit more comfortably within the frame and improves usability with entry-level imaging setups.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY 0.5x focal reducer 1.25 inch side view\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/f9154a-1_20250807110655_3023_480x480.jpg?v=1771411930\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.5× Focal Reduction\u003c\/strong\u003e\u003cbr\u003eReduces the effective focal length by approximately 50%, delivering a significantly wider field of view for both observing and basic astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWider Framing for Large Objects\u003c\/strong\u003e\u003cbr\u003eParticularly useful for extended deep-sky targets such as nebulae, open clusters, and the Moon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Reflection Coated Optics\u003c\/strong\u003e\u003cbr\u003eFully coated air-to-glass surfaces improve contrast and reduce internal reflections, helping maintain image clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for Visual \u0026amp; Eyepiece Projection Imaging\u003c\/strong\u003e\u003cbr\u003eCan be used visually to increase true field of view, or with eyepiece-projection and entry-level CCD\/CMOS imaging setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Metal Construction\u003c\/strong\u003e\u003cbr\u003eDurable metal housing with precise \u003cstrong\u003e28.5×0.6\u003c\/strong\u003e threading on both ends for secure attachment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eUse Case \u0026amp; Performance Notes\u003c\/h2\u003e\n\u003cp\u003eThis 0.5× reducer is best suited to small sensors, planetary cameras, and eyepiece-based imaging. The actual reduction factor may vary depending on spacing and optical configuration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for Moon and large deep-sky objects\u003c\/li\u003e\n\u003cli\u003eUseful for improving framing with short eyepiece projection setups\u003c\/li\u003e\n\u003cli\u003eNot designed for full-frame or large-sensor deep-sky imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatibility Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1.25-inch eyepiece and accessory systems\u003c\/li\u003e\n\u003cli\u003eThread specification: 28.5×0.6 (standard 1.25-inch filter thread)\u003c\/li\u003e\n\u003cli\u003eBest results achieved with modest sensor sizes and careful spacing\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":55456666681720,"sku":"F9154A","price":15.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/f9154a-1_20250807110655_3023.jpg?v=1771411930"},{"product_id":"svbony-sv209-1-0x-field-flattener-sv550-80f6","title":"SVBONY SV209 1.0× Field Flattener for SV550 80mm f\/6 Refractor","description":"\u003cp\u003eThe SVBONY SV209 1.0× Field Flattener is designed specifically for the SV550 80mm f\/6 refractor, correcting field curvature without altering focal length. It delivers sharp, flat images across the entire sensor, making it ideal for wide-field astrophotography with modern cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 1.0x field flattener for SV550 80mm f\/6 refractor\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/W9161A_20251206140407_1913_480x480.jpg?v=1771411179\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.0× Field Flattening (No Focal Reduction)\u003c\/strong\u003e\u003cbr\u003eMaintains the native focal length of the telescope while correcting field curvature for edge-to-edge star sharpness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimised for Wide-Field Imaging\u003c\/strong\u003e\u003cbr\u003eEnsures consistent focus and clarity across the frame, particularly beneficial for APS-C and full-frame sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Multi-Coated Optics\u003c\/strong\u003e\u003cbr\u003eHigh-quality coatings maximise light transmission and reduce aberrations, preserving contrast and image detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for SV550 80mm f\/6 OTA\u003c\/strong\u003e\u003cbr\u003ePrecisely matched to the optical design of the SV550 80F6 for correct spacing and optimal performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Mechanical Construction\u003c\/strong\u003e\u003cbr\u003ePrecision-machined metal housing ensures stable alignment during long imaging sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eField Curvature Correction for SV550 80F6\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 field flattener optical coatings\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386046309432048874784895.jpg?v=1771411179\"\u003e\u003c\/p\u003e\n\u003cp\u003eMost refractor telescopes exhibit some degree of field curvature. The SV209 corrects this curvature, ensuring stars remain pinpoint sharp from the centre of the image to the edges, greatly improving astrophotography results.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBackfocus Specification – 55 mm\u003c\/h2\u003e\n\u003cp\u003eCorrect backfocus spacing is essential for optimal performance. The SV209 is designed around a standard \u003cstrong\u003e55 mm backfocus\u003c\/strong\u003e, measured from the shoulder of the flattener to the camera sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 field flattener showing backfocus calculation and connection order\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386046311434876192638703.jpg?v=1771411180\"\u003e\u003c\/p\u003e\n\u003cp\u003eThis spacing is ideal for DSLR and many dedicated astronomy cameras when used with the supplied adapters.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eMechanical Structure \u0026amp; Threading\u003c\/h2\u003e\n\u003cp\u003eThe SV209 threads directly into the telescope focuser for a rigid, tilt-resistant connection. The telescope-side thread specification is:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eM63×1 male thread\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 field flattener with M63 extension tube\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386046313975796124363680.jpg?v=1771411179\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eM63 Extension Tube Included\u003c\/h2\u003e\n\u003cp\u003eThe supplied M63 extension tube and M48 adapter ring ensure the correct 55 mm backfocus spacing, following standard astrophotography conventions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eM48 Adapter Ring \u0026amp; 2-Inch Filter Support\u003c\/h2\u003e\n\u003cp\u003eThe M48 adapter ring includes internal 2-inch filter threads, allowing direct installation of standard 2-inch filters. This enables flexible use of light-pollution, narrowband, or UV\/IR-cut filters within the imaging train.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 field flattener M48 adapter and filter compatibility\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386046315254080184411718.jpg?v=1771411180\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eExpandable Imaging Configuration\u003c\/h2\u003e\n\u003cp\u003eThe SV209 can also be combined with the SV210 camera angle adjuster (sold separately) to fine-tune image framing and field orientation without disturbing focus or spacing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatibility Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned specifically for the SV550 80mm f\/6 refractor\u003c\/li\u003e\n\u003cli\u003eMaintains native focal length (1.0×)\u003c\/li\u003e\n\u003cli\u003eOptimised for 55 mm backfocus spacing\u003c\/li\u003e\n\u003cli\u003eSupports 2-inch filter systems via M48 threading\u003c\/li\u003e\n\u003cli\u003eNot guaranteed to perform optimally on other telescope models\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":55456666911096,"sku":"W9161A","price":104.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/W9161A_20251206140407_1913.jpg?v=1782294329"},{"product_id":"svbony-sv209-0-8x-focal-reducer-field-flattener-sv550-122","title":"SVBONY SV209 0.8× Focal Reducer \u0026 Field Flattener for SV550 122 APO","description":"\u003cp\u003eThe SVBONY SV209 0.8× Focal Reducer \/ Field Flattener is specifically designed for the SV550 122mm f\/7 Triplet APO refractor. It optimises the telescope for wide-field astrophotography by reducing focal length and correcting field curvature, resulting in faster imaging and sharp stars across the entire sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 0.8x focal reducer and field flattener for SV550 122mm Triplet APO\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/Untitled_design_6.svg?v=1771410295\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.8× Focal Reduction\u003c\/strong\u003e\u003cbr\u003eReduces the effective focal length by 20%, delivering a wider field of view and shorter exposure times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Curvature Correction\u003c\/strong\u003e\u003cbr\u003eFlattens the naturally curved focal plane of refractor telescopes, improving edge-to-edge star sharpness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrighter, Faster Imaging\u003c\/strong\u003e\u003cbr\u003eConverts the SV550 122mm from f\/7 to approximately f\/5.6, increasing imaging speed for deep-sky targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for SV550 122 Triplet APO\u003c\/strong\u003e\u003cbr\u003ePrecisely matched to the optical characteristics of the SV550 122mm triplet refractor for optimal performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Multi-Coated Optics\u003c\/strong\u003e\u003cbr\u003eHigh-quality coatings reduce reflections and aberrations, maintaining contrast and image clarity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e0.8× Reducer \/ Field Flattener for SV550 122mm APO\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 reducer and field flattener with space background\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6382444202532700589380362.jpg?v=1771410114\"\u003e\u003c\/p\u003e\n\u003cp\u003eBy shortening the focal length from 854 mm to approximately 683 mm, the SV209 enables wider framing of large nebulae and improved efficiency when imaging faint deep-sky objects.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation Overview\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 focal reducer installation steps on SV550 122mm APO\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6382444203913059445666959.jpg?v=1771410115\"\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eRemove the existing focuser adapter from the SV550 122mm telescope\u003c\/li\u003e\n\u003cli\u003eThread the SV209 reducer\/flattener directly into the focuser\u003c\/li\u003e\n\u003cli\u003eAttach camera adapters and imaging accessories as required\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch2\u003eMechanical Structure \u0026amp; Threading\u003c\/h2\u003e\n\u003cp\u003eThe reducer\/flattener threads directly into the focuser for a rigid, tilt-resistant connection. The main telescope-side thread is \u003cstrong\u003eM63×1\u003c\/strong\u003e, providing secure mechanical alignment.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 reducer field flattener components and threading\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6382444215187276543639355.jpg?v=1771410114\"\u003e \u003cimg loading=\"lazy\" alt=\"SVBONY SV209 reducer flattener with astronomical background\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6382444232242952186001139.jpg?v=1771410114\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCorrection of Field Curvature\u003c\/h2\u003e\n\u003cp\u003eIn addition to focal reduction, the SV209 corrects the inherent field curvature found in refractor telescopes. This ensures stars remain sharply focused to the edges of DSLR and astronomy camera sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"Before and after field flattening comparison using SVBONY SV209\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6387056651171975242338219.jpg?v=1771410115\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBackfocus Specification – 55 mm\u003c\/h2\u003e\n\u003cp\u003eThe required backfocus distance is \u003cstrong\u003e55 mm\u003c\/strong\u003e, measured from the shoulder of the reducer to the camera sensor. This spacing matches the standard requirement for DSLR and many dedicated astronomy cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV209 reducer showing 55mm backfocus measurement\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6382444237862058256082373.jpg?v=1771410114\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFully Multi-Coated Optical System\u003c\/h2\u003e\n\u003cp\u003eThe fully multi-coated lens elements improve light transmission and reduce internal reflections. The SV209 transforms the SV550 122mm f\/7 refractor into a faster \u003cstrong\u003ef\/5.6\u003c\/strong\u003e imaging system, making it well suited for both astronomical and terrestrial photography.\u003c\/p\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"Fully multi-coated optical lenses of the SVBONY SV209 reducer flattener\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6382444241125060756303685.jpg?v=1771410114\"\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatibility Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned specifically for the SV550 122mm f\/7 Triplet APO refractor\u003c\/li\u003e\n\u003cli\u003eOptimised for 55 mm backfocus spacing\u003c\/li\u003e\n\u003cli\u003eBest results achieved with rigid, well-aligned imaging trains\u003c\/li\u003e\n\u003cli\u003eNot guaranteed to perform optimally on other telescope models\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":55456666943864,"sku":"W9161B","price":139.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/Untitled_design_6.svg?v=1782294353"},{"product_id":"svbony-sv193-0-8x-focal-reducer-field-flattener-sv503-102ed","title":"SVBONY SV193 0.8× Focal Reducer \u0026 Field Flattener for SV503 102ED","description":"\u003cp\u003eThe SVBONY SV193 0.8× Focal Reducer \/ Field Flattener is purpose-designed for the SV503 102mm ED refractor, optimising the telescope for wide-field astrophotography. By reducing focal length and flattening the image field, it delivers sharper stars across the frame and enables faster, more efficient imaging.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9152d-0_20251231154749_0802_480x480.webp?v=1771409357\" alt=\"SVBONY SV193 2-Inch 0.8x Focal Reducer \/ Field Flattener for SV503 102ED\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.8× Focal Reduction\u003c\/strong\u003e\u003cbr\u003eShortens the effective focal length by 20%, providing a wider field of view and improving framing of large deep-sky objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Field Flatness\u003c\/strong\u003e\u003cbr\u003eCorrects field curvature to maintain star sharpness from centre to edge, particularly beneficial for modern camera sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimised for SV503 102ED\u003c\/strong\u003e\u003cbr\u003eSpecifically matched to the optical characteristics of the SV503 102mm ED refractor for best performance and spacing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Multi-Coated Optics\u003c\/strong\u003e\u003cbr\u003eMulti-coated lens elements reduce aberrations and reflections, preserving contrast and image clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Mechanical Construction\u003c\/strong\u003e\u003cbr\u003ePrecision-machined aluminium body with a hard-anodised finish ensures durability and stable spacing during long imaging sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e0.8× Photo Reducer \/ Field Flattener\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV193 0.8x focal reducer and field flattener for SV503 102ED\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113340509345698139376.jpg?v=1771409356\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe 0.8× reduction effectively converts the SV503 102ED from f\/7 to approximately f\/5.6, allowing shorter exposure times and improved signal collection for astrophotography.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e3-Element, 2-Group Optical Design\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV193 3 element 2 group lens structure for SV503 102ED\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113339334948245181325.jpg?v=1771409357\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe three-element, two-group optical layout is engineered to flatten the naturally curved field of refractor telescopes while maintaining good colour correction and edge performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eHard-Anodised Aluminium Construction\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV193 focal reducer aluminium body for SV503 102ED\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113337855650269044200.jpg?v=1771409357\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe rigid aluminium housing features a hard-anodised finish, providing mechanical stability and resistance to wear during repeated setup and long imaging sessions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eMechanical Structure \u0026amp; Installation\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV193 focal reducer thread structure for SV503 102ED\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113347099694033499035.jpg?v=1771409357\"\u003e \u003cimg loading=\"lazy\" alt=\"SVBONY SV193 focal reducer installation steps for SV503 102ED\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113348132239377085289.jpg?v=1771409357\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe SV193 integrates directly into the imaging train, allowing secure connection with cameras and accessories. Correct spacing and solid mechanical connections are essential to achieve optimal edge performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBackfocus \u0026amp; Camera Compatibility\u003c\/h2\u003e\n\u003cp\u003eAccurate backfocus spacing between the reducer\/flattener and the camera sensor is critical for achieving flat, well-corrected stars across the image. Performance may vary depending on camera type and adapters used.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with dedicated astronomy cameras\u003c\/li\u003e\n\u003cli\u003eSuitable for DSLR and mirrorless cameras with correct adapters\u003c\/li\u003e\n\u003cli\u003eSupports standard 2-inch filter systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eDesigned for Astrophotography\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"Astrophotography results using SVBONY SV193 with SV503 102ED\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113334108196358056919.jpg?v=1771409357\"\u003e\u003c\/p\u003e\n\u003cp\u003eBy reducing field curvature and improving illumination uniformity, the SV193 enables cleaner star shapes and more consistent results across the sensor, making it ideal for imaging nebulae, star fields, and extended deep-sky targets.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatibility Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned specifically for the SV503 102mm ED refractor\u003c\/li\u003e\n\u003cli\u003eNot guaranteed to deliver optimal results on other telescope models\u003c\/li\u003e\n\u003cli\u003eBest performance achieved with precise spacing and rigid imaging trains\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":55456667140472,"sku":"W9152D","price":73.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9152d-0_20251231154749_0802.webp?v=1771409357"},{"product_id":"svbony-sv193-0-8x-focal-reducer-field-flattener","title":"SVBONY SV193 0.8× Focal Reducer \u0026 Field Flattener for SV503 80ED","description":"\u003cp\u003eThe SVBONY SV193 0.8× Focal Reducer \/ Field Flattener is designed specifically for the SV503 80mm f\/7 ED refractor, optimising the telescope for wide-field astrophotography. By reducing focal length and flattening the field, it delivers sharper stars across the entire image sensor and brighter, faster exposures.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9152b-2_20250807175910_1691_480x480.jpg?v=1771408975\" alt=\"SVBONY SV193 2 Inch 0.8X Focal Reducer \/ Field Flattener front view\" style=\"float: none; display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.8× Focal Reduction \u0026amp; Field Flattening\u003c\/strong\u003e\u003cbr\u003eReduces the focal length by 20% while flattening the field, minimising edge distortion and improving star sharpness across the frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrighter, Faster Imaging\u003c\/strong\u003e\u003cbr\u003eShorter effective focal length allows more light to reach the sensor, reducing exposure times for deep-sky astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimised for SV503 80ED\u003c\/strong\u003e\u003cbr\u003ePrecisely matched to the SV503 80mm f\/7 ED refractor for optimal spacing, performance, and image quality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Optical Design\u003c\/strong\u003e\u003cbr\u003eMulti-coated optical elements reduce aberrations and maintain high contrast and clarity across the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Integration\u003c\/strong\u003e\u003cbr\u003eDesigned for straightforward attachment to the SV503 80ED, making it easy to incorporate into an imaging setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e0.8× Photo Reducer \/ Field Flattener\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV193 0.8x focal reducer and field flattener\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113321965215858920417.jpg?v=1771408691\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe 0.8× reduction shortens the focal length while maintaining image quality, making the SV503 80ED more suitable for wide-field astrophotography and larger nebulae.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e3-Element, 2-Group Optical Structure\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV193 3 element 2 group lens structure diagram\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113323722026736658646.jpg?v=1771408692\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe three-element, two-group optical design ensures effective field flattening and controlled aberrations, delivering sharp stars from centre to edge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eHard-Anodised Aluminium Construction\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV193 focal reducer aluminium body construction\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113329466305297993719.jpg?v=1771408692\"\u003e \u003cimg loading=\"lazy\" alt=\"SVBONY SV193 focal reducer external view\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113327205651755828846.jpg?v=1771408692\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe precision-machined aluminium body features a hard-anodised finish for durability, rigidity, and reliable spacing during long imaging sessions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFilter \u0026amp; Camera Compatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"SVBONY SV193 focal reducer filter connection diagram\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113328278014794445403.jpg?v=1771408692\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe SV193 integrates easily with common astrophotography filters and camera adapters, allowing flexible configuration to suit different imaging trains.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eDesigned for Astrophotography\u003c\/h2\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" alt=\"Astrophotography images taken using SVBONY SV193 focal reducer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/6386113330507179331430292.jpg?v=1771408692\"\u003e\u003c\/p\u003e\n\u003cp\u003ePurpose-built for imaging, the SV193 improves corner sharpness and reduces vignetting, making it ideal for DSLR, mirrorless, and dedicated astronomy cameras when paired with the SV503 80ED.\u003c\/p\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":55456667173240,"sku":"W9152B","price":74.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/w9152b-2_20250807175910_1691.jpg?v=1771408975"},{"product_id":"nakoh-60gt-0-65x-reducer","title":"NAKOH 60GT 0.65× Reducer","description":"\u003csection class=\"product-intro\"\u003e\n  \u003cp class=\"txt\"\u003e\n    A 0.65× reducer-corrector designed specifically for the NAKOH 60GT,\n    reducing the focal length to 234mm and accelerating the system to\n    f\/3.9. This enables significantly faster imaging while providing a\n    wide, flat field optimised for full-frame astrophotography.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"package-contents con2 top_about_figure_img\"\u003e\n  \u003ch2\u003e\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgl.png\" alt=\"\"\u003e\n    Package Contents\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgr.png\" alt=\"\"\u003e\n  \u003c\/h2\u003e\n\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd align=\"center\"\u003e\n          \u003cfigure\u003e\n            \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764316651563881.jpg?v=1772012355\" alt=\"NAKOH 60GT 0.65× reducer with protective caps\"\u003e\n            \u003cfigcaption class=\"pkg-text\"\u003e0.65× Reducer\u003c\/figcaption\u003e\n          \u003c\/figure\u003e\n        \u003c\/td\u003e\n        \u003ctd align=\"center\"\u003e\n          \u003cfigure\u003e\n            \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764316146761094.jpg?v=1772012355\" alt=\"NAKOH 60GT 0.65× reducer instruction manual and warranty card\"\u003e\n            \u003cfigcaption class=\"pkg-text\"\u003eUser Manual \u0026amp; Warranty Card\u003c\/figcaption\u003e\n          \u003c\/figure\u003e\n        \u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-specifications con3 top_about_figure_img\"\u003e\n  \u003ch2\u003e\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgl.png\" alt=\"\"\u003e\n    Specifications\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgr.png\" alt=\"\"\u003e\n  \u003c\/h2\u003e\n\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eProduct Name\u003c\/td\u003e\n        \u003ctd\u003e60GT Specific 0.65× Reducer\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n        \u003ctd\u003e128 × 72 × 72 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMagnification\u003c\/td\u003e\n        \u003ctd\u003e0.65×\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOptical Design\u003c\/td\u003e\n        \u003ctd\u003eQuadruplet (incl. 1× SD glass element, made in Japan)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eEffective Focal Ratio\u003c\/td\u003e\n        \u003ctd\u003ef\/3.9\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eImage Circle\u003c\/td\u003e\n        \u003ctd\u003eØ44mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eBack Focus\u003c\/td\u003e\n        \u003ctd\u003e55mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMount Thread Standard\u003c\/td\u003e\n        \u003ctd\u003e\n          Telescope side: M68×1\u003cbr\u003e\n          Camera side: M48×0.75, M54×0.75\n        \u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeight\u003c\/td\u003e\n        \u003ctd\u003e0.58 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eStandard Accessories\u003c\/td\u003e\n        \u003ctd\u003e\n          0.65× Reducer ×1\u003cbr\u003e\n          Front \u0026amp; Rear Caps ×2\u003cbr\u003e\n          Instruction Manual ×1\u003cbr\u003e\n          Warranty Card ×1\n        \u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"design-features con4 top_about_figure_img\"\u003e\n  \u003ch2\u003e\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgl.png\" alt=\"\"\u003e\n    Design Features\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgr.png\" alt=\"\"\u003e\n  \u003c\/h2\u003e\n\n  \u003ch3\u003eFast Focal Ratio\u003c\/h3\u003e\n  \u003cp\u003e\n    When used with the 60GT, the reducer accelerates the system from f\/6\n    to f\/3.9, dramatically reducing exposure times and increasing\n    efficiency for deep-sky astrophotography. The effective focal length\n    becomes 234mm, expanding the field of view for large nebulae and\n    galaxies.\n  \u003c\/p\u003e\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1766372823130753.jpg?v=1772012357\" alt=\"NAKOH 60GT with 0.65× reducer attached\"\u003e\n  \u003c\/figure\u003e\n\n  \u003ch3\u003eUniform Flat Field\u003c\/h3\u003e\n  \u003cp\u003e\n    Corrects field curvature and coma to deliver sharp, round stars\n    across the entire 44mm full-frame image circle.\n  \u003c\/p\u003e\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764838475253047.jpg?v=1772012357\" alt=\"Spot diagram showing uniform field correction\"\u003e\n  \u003c\/figure\u003e\n\n  \u003ch3\u003eAdvanced Optical Design\u003c\/h3\u003e\n  \u003cp\u003e\n    A quadruplet lens configuration incorporating a Japan-made SD glass\n    element effectively suppresses chromatic aberration, delivering high\n    contrast and excellent colour correction.\n  \u003c\/p\u003e\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1770264060122182.jpg?v=1772012357\" alt=\"NAKOH 60GT 0.65× reducer optical design diagram\"\u003e\n  \u003c\/figure\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"image-samples con5 top_about_figure_img\"\u003e\n  \u003ch2\u003eAstrophotography Sample\u003c\/h2\u003e\n\n  \u003cfigure\u003e\n    \u003cfigcaption class=\"pkg-text\"\u003e\n      M45 (Pleiades) — ZWO ASI2600MC\n    \u003c\/figcaption\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764313835676363_513a6b7a-58a2-4cb2-aca3-04027179b16f.jpg?v=1772012358\" alt=\"Pleiades captured with NAKOH 60GT and 0.65× reducer\"\u003e\n  \u003c\/figure\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"size-connection-diagrams\"\u003e\n  \u003ch2\u003eProduct Size \u0026amp; Connection Diagrams\u003c\/h2\u003e\n\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764318688160043.jpg?v=1772012357\" alt=\"NAKOH 60GT 0.65× reducer components\"\u003e\n  \u003c\/figure\u003e\n\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1768534612157044.jpg?v=1772012356\" alt=\"NAKOH 60GT 0.65× reducer size diagram\"\u003e\n  \u003c\/figure\u003e\n\n  \u003cfigure\u003e\n    \u003cfigcaption class=\"pkg-text\"\u003eImaging Mode Connection Diagram\u003c\/figcaption\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764839215173491.jpg?v=1772012357\" alt=\"NAKOH 60GT 0.65× reducer imaging connection diagram\"\u003e\n  \u003c\/figure\u003e\n\u003c\/section\u003e","brand":"Nakoh","offers":[{"title":"Default Title","offer_id":55474974491000,"sku":"60GT","price":399.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764316651563881.jpg?v=1782290601"},{"product_id":"nakoh-60gt-1-0x-field-flattener","title":"NAKOH 60GT 1.0× Field Flattener","description":"\u003csection class=\"product-intro\"\u003e\n  \u003cp class=\"txt\"\u003e\n    A 1.0× field flattener designed specifically for the NAKOH 60GT,\n    unlocking its full-frame imaging potential by correcting field\n    curvature while preserving the telescope’s native focal length\n    and f\/6 focal ratio.\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"package-contents con2 top_about_figure_img\"\u003e\n  \u003ch2\u003e\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgl.png\" alt=\"\"\u003e\n    Package Contents\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgr.png\" alt=\"\"\u003e\n  \u003c\/h2\u003e\n\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd align=\"center\"\u003e\n          \u003cfigure\u003e\n            \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764232725210017.jpg?v=1772010950\" alt=\"NAKOH 60GT 1.0× flattener with protective caps\"\u003e\n            \u003cfigcaption class=\"pkg-text\"\u003e1.0× Flattener\u003c\/figcaption\u003e\n          \u003c\/figure\u003e\n        \u003c\/td\u003e\n        \u003ctd align=\"center\"\u003e\n          \u003cfigure\u003e\n            \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764232734107313.jpg?v=1772010950\" alt=\"NAKOH 60GT 1.0× flattener instruction manual and warranty card\"\u003e\n            \u003cfigcaption class=\"pkg-text\"\u003eUser Manual \u0026amp; Warranty Card\u003c\/figcaption\u003e\n          \u003c\/figure\u003e\n        \u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"product-specifications con3 top_about_figure_img\"\u003e\n  \u003ch2\u003e\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgl.png\" alt=\"\"\u003e\n    Specifications\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgr.png\" alt=\"\"\u003e\n  \u003c\/h2\u003e\n\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eProduct Name\u003c\/td\u003e\n        \u003ctd\u003e60GT Specific 1.0× Flattener\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n        \u003ctd\u003e112 × 75 × 75 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMagnification\u003c\/td\u003e\n        \u003ctd\u003e1.0×\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOptical Design\u003c\/td\u003e\n        \u003ctd\u003eTriplet\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eEffective Focal Ratio\u003c\/td\u003e\n        \u003ctd\u003ef\/6\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eImage Circle\u003c\/td\u003e\n        \u003ctd\u003eØ44mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eBack Focus\u003c\/td\u003e\n        \u003ctd\u003e55mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConnection Threads\u003c\/td\u003e\n        \u003ctd\u003e\n          Telescope side: M68×1\u003cbr\u003e\n          Camera side: M48×0.75, M54×0.75\n        \u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeight\u003c\/td\u003e\n        \u003ctd\u003e0.53 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eStandard Accessories\u003c\/td\u003e\n        \u003ctd\u003e\n          1.0× Flattener ×1\u003cbr\u003e\n          Front \u0026amp; Rear Caps ×2\u003cbr\u003e\n          Instruction Manual ×1\u003cbr\u003e\n          Warranty Card ×1\n        \u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"design-features con4 top_about_figure_img\"\u003e\n  \u003ch2\u003e\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgl.png\" alt=\"\"\u003e\n    Design Features\n    \u003cimg src=\"https:\/\/nakoh.co.jp\/template\/defaultEN\/static\/image\/tbgr.png\" alt=\"\"\u003e\n  \u003c\/h2\u003e\n\n  \u003ch3\u003eUniform Flat Field\u003c\/h3\u003e\n  \u003cp\u003e\n    Precisely corrects field curvature, delivering evenly sharp and\n    round stars from the centre to the edges of the frame.\n  \u003c\/p\u003e\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764837476125434.jpg?v=1772010952\" alt=\"Spot diagram showing field flattening performance\"\u003e\n  \u003c\/figure\u003e\n\n  \u003ch3\u003eBright, Vivid Imaging\u003c\/h3\u003e\n  \u003cp\u003e\n    Maintains over 95% relative illumination across full-frame sensors,\n    effectively suppressing vignetting and preserving image brightness.\n  \u003c\/p\u003e\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764837489206982.jpg?v=1772010952\" alt=\"Relative illumination curve for full-frame imaging\"\u003e\n  \u003c\/figure\u003e\n\n  \u003ch3\u003eNative Focal Ratio\u003c\/h3\u003e\n  \u003cp\u003e\n    Preserves the 60GT’s original 360mm focal length and f\/6 focal ratio,\n    ensuring optical performance remains fully optimised.\n  \u003c\/p\u003e\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1766372784183592.jpg?v=1772010952\" alt=\"Nakoh 60GT with 1.0× flattener installed\"\u003e\n  \u003c\/figure\u003e\n\n  \u003ch3\u003eFull-Frame Optimised\u003c\/h3\u003e\n  \u003cp\u003e\n    Triplet optical construction ensures a flat field and sharp stars\n    from centre to corner when used with full-frame cameras.\n  \u003c\/p\u003e\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1770264013153972.jpg?v=1772010952\" alt=\"NAKOH 60GT 1.0× flattener technical diagram\"\u003e\n  \u003c\/figure\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"image-samples con5 top_about_figure_img\"\u003e\n  \u003ch2\u003eAstrophotography Samples\u003c\/h2\u003e\n\n  \u003cfigure\u003e\n    \u003cfigcaption class=\"pkg-text\"\u003e\n      NGC 6960 (Veil Nebula) — ZWO ASI6200MM Pro\n    \u003c\/figcaption\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764308954217889.jpg?v=1772010953\" alt=\"Veil Nebula captured with NAKOH 60GT and 1.0× flattener\"\u003e\n  \u003c\/figure\u003e\n\n  \u003cfigure\u003e\n    \u003cfigcaption class=\"pkg-text\"\u003e\n      M31 (Andromeda Galaxy) — ZWO ASI2600MC\n    \u003c\/figcaption\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764313804937438.jpg?v=1772010953\" alt=\"Andromeda Galaxy captured with NAKOH 60GT and 1.0× flattener\"\u003e\n  \u003c\/figure\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"size-connection-diagrams\"\u003e\n  \u003ch2\u003eProduct Size \u0026amp; Connection Diagrams\u003c\/h2\u003e\n\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764308097203634.jpg?v=1772010951\" alt=\"NAKOH 60GT 1.0× flattener labeled components\"\u003e\n  \u003c\/figure\u003e\n\n  \u003cfigure\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1768534574201368.jpg?v=1772010952\" alt=\"NAKOH 60GT 1.0× flattener dimension diagram\"\u003e\n  \u003c\/figure\u003e\n\n  \u003cfigure\u003e\n    \u003cfigcaption class=\"pkg-text\"\u003eImaging Mode Connection Diagram\u003c\/figcaption\u003e\n    \u003cimg loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764839165774611.jpg?v=1772010952\" alt=\"Connection diagram for NAKOH 60GT 1.0× flattener imaging setup\"\u003e\n  \u003c\/figure\u003e\n\u003c\/section\u003e","brand":"Nakoh","offers":[{"title":"Default Title","offer_id":55474974523768,"sku":"60GT","price":299.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/1764232725210017.jpg?v=1782290569"},{"product_id":"3-0-79x-reducer-field-flattener-apo-refractor","title":"3\" 0.79x Reducer \u0026 Field Flattener for APO Refractors (APS-C Ready)","description":"\u003ch2\u003e3\" 0.79x Reducer \u0026amp; Field Flattener for APO Refractors\u003c\/h2\u003e\n\n\u003cp\u003e\nThe 3\" 0.79x reducer and field flattener is designed for astrophotography with high-quality APO refractor telescopes. \nIt reduces focal length by 0.79x while correcting field curvature, delivering sharp stars across the entire image – even with large APS-C sensors such as the ASI2600.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis reducer is ideal for refractors with focal lengths around 800–1000mm, making it a perfect match for 127mm class telescopes. \nIt provides a wider field of view, faster imaging, and improved edge-to-edge performance without requiring extreme backfocus distances.\n\u003c\/p\u003e\n\n\u003ch2\u003eAstrophotography Performance\u003c\/h2\u003e\n\n\u003cp\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/tsapo102s-ts-0.79x-photoline-reducer-jensen-1000x1000w.webp?v=1774280752\" alt=\"Crescent Nebula image using 0.79x reducer\"\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\nImage: Crescent Nebula by Johannes Jensen\u003cbr\u003e\nSetup used:\u003cbr\u003e\n♦ 102mm f\/7 APO refractor\u003cbr\u003e\n♦ 0.79x reducer\/flattener\u003cbr\u003e\n♦ DSLR camera – 36 x 360 second exposures\n\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e0.79x focal reduction for wider field and faster imaging\u003c\/li\u003e\n\u003cli\u003eFlattens field curvature for pinpoint stars across the frame\u003c\/li\u003e\n\u003cli\u003eLarge 3\" optics – ideal for APS-C sensors (e.g. ASI2600)\u003c\/li\u003e\n\u003cli\u003eOptimised for refractors around 800–1000mm focal length\u003c\/li\u003e\n\u003cli\u003eNo extreme backfocus required\u003c\/li\u003e\n\u003cli\u003eImproves illumination and reduces edge distortion\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBackfocus \u0026amp; Spacing\u003c\/h2\u003e\n\n\u003cp\u003e\nBackfocus distance is measured from the M48 thread to the camera sensor and depends on the telescope focal length:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eUp to 350mm – 70mm\u003c\/li\u003e\n\u003cli\u003eUp to 420mm – 65mm\u003c\/li\u003e\n\u003cli\u003e450–500mm – 61mm\u003c\/li\u003e\n\u003cli\u003e510–600mm – 58mm\u003c\/li\u003e\n\u003cli\u003e610–700mm – 57mm\u003c\/li\u003e\n\u003cli\u003e710–790mm – 56mm\u003c\/li\u003e\n\u003cli\u003e800mm and above – 55mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nFor most 127mm class refractors (~950mm focal length), the correct spacing is \u003cstrong\u003e55mm\u003c\/strong\u003e.\nSpacers and extension rings can be used to achieve precise backfocus.\n\u003c\/p\u003e\n\n\u003ch2\u003eCompatibility \u0026amp; Connection\u003c\/h2\u003e\n\n\u003cp\u003e\nThe reducer connects directly via an \u003cstrong\u003eM68 thread\u003c\/strong\u003e or can be inserted into a \u003cstrong\u003e3\" focuser\u003c\/strong\u003e. \nAdapters are available for compatibility with a wide range of telescope focusers.\n\u003c\/p\u003e\n\n\u003cp\u003e\nSuitable for:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eAPO refractors with 2.5\" or larger focusers\u003c\/li\u003e\n\u003cli\u003e127mm class refractors (~900–1000mm focal length)\u003c\/li\u003e\n\u003cli\u003eAPS-C cameras such as ASI2600MC Pro\u003c\/li\u003e\n\u003cli\u003eDSLR and mirrorless astrophotography setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nThis is a high-performance solution for astrophotographers looking for a wider field, faster imaging speed, and excellent edge correction.\n\u003c\/p\u003e","brand":"TS-Optics","offers":[{"title":"Default Title","offer_id":55509029290360,"sku":"TSRED379","price":348.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/photoline-0.79x-3-inch-reducer-flattener_2nd-1000x1000h_4933a89d-1730-44aa-b904-5abe7a4478e6.webp?v=1774281144"},{"product_id":"askar-0-74x-reducer-for-131f","title":"Askar 0.74x Reducer for 131F","description":"\u003ch2\u003e\u003cspan\u003eDesigned exclusively for the Askar 131F, this 0.74× reducer reduces the 131F focal ratio to F5.6, unlocking more potential for your imaging possibilities.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv class=\"cbox-57 p_loopItem\" id=\"saf-detail-0\"\u003e\n\u003ch3 class=\"e_h3-72 s_summary\"\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003cdiv class=\"e_richText-73 s_title clearfix\"\u003e\n\u003cdiv class=\"ce_detail\" id=\"ce_detail-303190\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1773801421367\"\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-1773801421367-0\"\u003e\n\u003cdiv class=\"ie_grid\" id=\"ie_grid-1773801421372\"\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-1773801421372-0\"\u003e\n\u003cdiv class=\"ie_fimg\" id=\"ie_fimg-1773801421377\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/9ac72586-fb96-41b0-ae16-dcb0ffc2f617.jpg\" width=\"100%\" height=\"100%\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ie_line\" id=\"ie_line-1773801421652\"\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1773801421657\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003eThis 0.74× Reducer is the ideal companion for the Askar 131F telescope, reducing the focal ratio from f\/7.5 to f\/5.6. This dramatically shortens exposure times, allowing you to effortlessly capture wide-field nebulae,dense star clusters, as well as faint or fast-moving celestial objects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt also incorporates field-flattening correction capabilities,effectively eliminating field curvature to ensure sharp, clear stars from the center to the edges of the frame.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFeaturing a triplet optical lens design, this reducer supports a 44mm full-frame image circle. It has a standard back focus of 55mm (measured from the M48 thread), with M72×1 threads on both ends.The package includes an extension tube and comes with both M54×0.75 and M48×0.75 adapter rings that connect directly to the reducer for easy installation.The rear adapter ring features a built-in M48×0.75 thread, enabling direct attachment of 2-inch filters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eConstructed using CNC machining, the reducer is equipped with metal thread caps on both ends. These caps protect the optics and offer convenient dust-proof storage, reflecting the product's professional quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"reset_style\" id=\"ie_text-1773801421687\"\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-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 response-transition\"\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e （After attaching）131F Focal length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e733.6mm\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e （After attaching）131F Focal ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003ef\/5.6\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLens Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTriplet design\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBack Focus\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e55mm（from the base of M48 male thread）\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e0.56kg\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\u003e\u003cstrong\u003eM72*1\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\u003e\u003cstrong\u003eSize 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\/a319ecca-0146-4af4-b26f-09b41dd5f95f.jpg\"\u003e\u003c\/figure\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\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\/f2814497-8813-43b5-9b6a-71f9c3ab355b.jpg\"\u003e\u003c\/figure\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\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 src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/7e3a109f-9f5f-4b08-b223-f4823567ab21.jpg\"\u003e\u003c\/figure\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\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 src=\"https:\/\/omo-oss-image.thefastimg.com\/portal-saas\/pg2024111409483993253\/cms\/image\/7b275b64-0102-442f-87cf-fa1816ab032f.jpg\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":55586215461240,"sku":"SHS-0.74xRED-for131F","price":298.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/askar-131f-reducer-01-160x160.webp?v=1782294894"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/collections\/ChatGPT_Image_Aug_30_2026_04_22_41_PM.png?v=1788103387","url":"https:\/\/www.darkclearskies.co.uk\/collections\/reducers-correctors.oembed?page=2","provider":"Dark Clear Skies ","version":"1.0","type":"link"}