{"title":"Optolong Broadband \u0026 Light-Pollution Filters","description":"\u003cp\u003eL-Pro, L-Quad Enhance, CLS and CLS-CCD filters.\u003c\/p\u003e","products":[{"product_id":"optolong-cls-eos-c-clip-on-filter","title":"Optolong CLS EOS-C Clip on Filter","description":"\u003cp\u003eOptolong CLS EOS-C Clip on Filter\u003c\/p\u003e\n\n\u003ch2 data-spm-anchor-id=\"a2g0o.detail.1000023.i0.17b98ad7oPJ2a3\"\u003eOPTOLONG CLS Filter Clip Built-in Filter for EOS-C Camera Planetary CCD Cameras \u0026amp; DSLR  \u003c\/h2\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis filter is made for photography of deep sky targets in urban environments. The filter works by blocking the wavelengths or mercury and sodium-vapour used in urban lighting while letting the visible and the critical OIII, H-Alpha and H-Beta bands through, allowing great versatility in terms of potential objects to image. Use it in traditional photography to create and experiment.\u003c\/p\u003e\n\n\u003cp align=\"left\"\u003eNotes: The CLS EOS -C is suitable the Camera type:7D Mark II, 80D\/800D, 77D\/70D\/760D\/750D\/700D 650D\/600D, 550D\/500D, 400D, 100D\/1100D\/1200D\/1300D. Notes, this Filter is not for EF-S camera Lens.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMain Features:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n\t\u003cli\u003eBlocks wavelengths of mercury and sodium vapour artificial lighting, vastly reducing light pollution and skyglow: you can image from within cities\u003c\/li\u003e\n\t\u003cli\u003eLet critical OIII, H-Alpha and H-Beta bands through for imaging Deepsky objects\u003c\/li\u003e\n\t\u003cli\u003eContrast significantly improved, possible exposure times greatly extended\u003c\/li\u003e\n\t\u003cli\u003eInexpensive entry into the world of Deepsky Astro imaging\u003c\/li\u003e\n\t\u003cli\u003eQuality aluminum construction\u003c\/li\u003e\n\t\u003cli\u003eMulticoated on all surfaces\u003c\/li\u003e\n\t\u003cli\u003eLight pollution reduction and contrast boosting deep sky filter for Galaxies, nebulas and clusters\u003c\/li\u003e\n\t\u003cli\u003e95% transmission of main nebula emission lines: H-beta 486.1nm, OIII 495.9nm and 500.7nm, H-alpha 656.3nm, and SII 672nm.\u003c\/li\u003e\n\t\u003cli\u003e0.1% transmission of major transmission lines of artificial light pollution: Hg (Mercury) at 435.8nm, 546.1nm, 577nm, and 578.1nm. Na (Sodium) at 598nm, 589.6nm, 615.4nm, and 616.1nm.\u003c\/li\u003e\n\t\u003cli\u003eFits Canon EOS digital cameras: use your existing high quality equipment and lenses\u003c\/li\u003e\n\t\u003cli\u003eWARNING: The filters of OPTOLONG are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\t\u003cp\u003eOPTOLONG CLS Filter for Canon EOS cameras\u003c\/p\u003e\n\t\u003c\/li\u003e\n\t\u003cli\u003e\n\t\u003cp\u003ePP Material Plastic Box\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cimg alt=\"OPTOLONG CLS Filter Clip Built-in Filter (2)\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1Ao_PkL9TBuNjy1zbq6xpepXah.jpg\"\u003e\u003cimg alt=\"OPTOLONG CLS Filter Clip Built-in Filter (5)\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1kg8ck9BYBeNjy0Feq6znmFXat.jpg\"\u003e\u003cimg alt=\"OPTOLONG CLS Filter Clip Built-in Filter (6)\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1MCDIkH1YBuNjSszeq6yblFXaK.jpg\"\u003e\u003cimg alt=\"OPTOLONG CLS Filter Clip Built-in Filter (7)\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1QCOfk_tYBeNjy1Xdq6xXyVXaO.jpg\"\u003e\u003cimg alt=\"OPTOLONG CLS Filter Clip Built-in Filter (1)\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1SQhwcWmWBuNkHFJHq6yatVXaC.jpg\"\u003e\u003cimg alt=\"OPTOLONG CLS Filter Clip Built-in Filter (8)\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB15zD4kKOSBuNjy0Fdq6zDnVXaY.jpg\"\u003e\u003cimg alt=\"OPTOLONG CLS Filter Clip Built-in Filter (9)\" data-spm-anchor-id=\"a2g0o.detail.1000023.i1.17b98ad7oPJ2a3\" src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1B22okNSYBuNjSsphq6zGvVXae.jpg\"\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":37926473334961,"sku":null,"price":85.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/optolong-cls-eos-c-clip-on-filter-959777.jpg?v=1718364477"},{"product_id":"optolong-cls-filters","title":"Optolong CLS Filters","description":"\u003cp data-mce-fragment=\"1\"\u003eThe Optolong CLS (City Light Suppression) broadband filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eTogether with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural area.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eMain Use and Performance\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSuitable for color CCD cameras and unmodified DSLRs\u003cbr data-mce-fragment=\"1\"\u003eCLS with wider pass-band than UHC and hence is more favored when observing under mild to moderate light pollution\u003cbr data-mce-fragment=\"1\"\u003eLight pollution filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eTechnical Data\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSchott substrate material\u003cbr data-mce-fragment=\"1\"\u003eThickness 2.0 mm (1.25”\/2”\/36mm)\u003cbr data-mce-fragment=\"1\"\u003eThickness 1.0 mm (Clip series)\u003cbr data-mce-fragment=\"1\"\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003cbr data-mce-fragment=\"1\"\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt;30 seconds parallelism over the both surfaces\u003cbr data-mce-fragment=\"1\"\u003e95% transmission of main nebula emission lines (i.e. H-alpha 656nm, OIII 496nm and 500nm, SII 672nm and H-beta 486nm\u003cbr data-mce-fragment=\"1\"\u003e0.1% transmission of off-band, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm). Transmission of 0.1% is equivalent to OD3(Optical Density), and a high optical density value indicates very low transmission, and low optical density indicates high transmission.\u003cbr data-mce-fragment=\"1\"\u003eCoating Parameter\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eMulti-layers anti-reflection coating\u003c\/b\u003e\u003cbr data-mce-fragment=\"1\"\u003eNon-cementing optical substrate coating\u003cbr data-mce-fragment=\"1\"\u003eElectron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change\u003cbr data-mce-fragment=\"1\"\u003ePlanetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band\u003cbr data-mce-fragment=\"1\"\u003eFilter Cell\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eUltra-thin filter cell minimize vignetting by maximize possible clear aperture (clear aperture is 26mm for 1.25”; 45mm for 2”)\u003cbr data-mce-fragment=\"1\"\u003eAerometal Material | Precise CNC Machining | Sand Blasting Process | Black Anodized Finish | Extinction Treatment to Prevent Reflection | Laser Engraving No Fading\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25\"","offer_id":42296184340657,"sku":null,"price":37.0,"currency_code":"GBP","in_stock":true},{"title":"2\"","offer_id":42296184373425,"sku":null,"price":57.0,"currency_code":"GBP","in_stock":true},{"title":"EOS APS-C","offer_id":42296184406193,"sku":null,"price":72.0,"currency_code":"GBP","in_stock":true},{"title":"Full Frame","offer_id":42296184438961,"sku":null,"price":87.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/optolong-cls-filters-978457.jpg?v=1718364482"},{"product_id":"optolong-cls-ccd-filters","title":"Optolong CLS-CCD Filters","description":"\u003cp data-mce-fragment=\"1\"\u003eThe CLS-CCD broadband filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for photograghic purpose at light pollution area.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eMain Use and Performance\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCLS-CCD is different from CLS with infrared wavelength 700-1100nm cut-off\u003cbr data-mce-fragment=\"1\"\u003eFit with color CCD cameras and modified DSLRs for astrophotography\u003cbr data-mce-fragment=\"1\"\u003eWork well on most emission nebulae, planetary nebulae and supernova remnants\u003cbr data-mce-fragment=\"1\"\u003eNoticeable boost in contrast and visibility of the fainter outer detail\u003cbr data-mce-fragment=\"1\"\u003eLight pollution filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eTechnical Data\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eSchott substrate material\u003cbr data-mce-fragment=\"1\"\u003e Thickness 2.0 mm (1.25”\/2”\/36mm)\u003cbr data-mce-fragment=\"1\"\u003eThickness 1.0 mm (Clip series)\u003cbr data-mce-fragment=\"1\"\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003cbr data-mce-fragment=\"1\"\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt;30 seconds parallelism over the both surfaces\u003cbr data-mce-fragment=\"1\"\u003e95% transmission of main nebula emission lines (i.e. H-alpha 656nm, OIII 496nm and 500nm, SII 672nm and H-beta 486nm\u003cbr data-mce-fragment=\"1\"\u003e0.1% transmission of off-band, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm). Transmission of 0.1% is equivalent to OD3(Optical Density), and a high optical density value indicates very low transmission, and low optical density indicates high transmission.\u003cbr data-mce-fragment=\"1\"\u003eCoating Parameter\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eMulti-layers anti-reflection coating\u003c\/b\u003e\u003cbr data-mce-fragment=\"1\"\u003e Non-cementing optical substrate coating\u003cbr data-mce-fragment=\"1\"\u003eElectron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change\u003cbr data-mce-fragment=\"1\"\u003ePlanetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band\u003cbr data-mce-fragment=\"1\"\u003eFilter Cell\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e Ultra-thin filter cell minimize vignetting by maximize possible clear aperture (clear aperture is 26mm for 1.25”; 45mm for 2”)\u003cbr data-mce-fragment=\"1\"\u003e Aerometal Material | Precise CNC Machining | Sand Blasting Process | Black Anodized Finish | Extinction Treatment to Prevent Reflection | Laser Engraving No Fading\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25\"","offer_id":42296189255857,"sku":null,"price":64.0,"currency_code":"GBP","in_stock":true},{"title":"2\"","offer_id":42296189288625,"sku":null,"price":119.9,"currency_code":"GBP","in_stock":true},{"title":"EOS APS-C","offer_id":42296189321393,"sku":null,"price":88.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/optolong-cls-ccd-filters-319685.jpg?v=1718364488"},{"product_id":"optolong-l-pro-filters","title":"Optolong L-PRO Filters","description":"\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003eL-Pro Introduction \u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cstrong\u003e\u003cspan\u003eOptolong L-Pro (L-Professional) filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high \u0026amp; low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). \u003c\/span\u003e\u003c\/strong\u003e\n\u003cp\u003e\u003cspan\u003eTogether with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the filter is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural area with heavy light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptolong L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band. The balanced transmission allows astrophotos to be taken with minimal color cast to broadband emission objects such as galaxies, reflection nebulae and globular star clusters. L-Pro is the best choice for light pollution suppression.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for visual observation and astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eL-Pro filter has a very low transmission reduction rate against continuous spectrum space objects, and thus is quite effective in suppressing light pollution sources when shooting galaxies, reflection nebulae and globular star clusters. The same holds true for visual star observations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eL-Pro filter alone can suppress infrared wavelength, and thus can be used at ease for “L” image shootings with CCDs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLight pollution filter do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cu\u003eWARNING\u003c\/u\u003e: The filters of Optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOptical glass fine material\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSpectrum: 380-750nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt; 30 seconds parallelism over the both surfaces\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHigh transmission at major nebula emission lines (i.e. H-alpha 656nm, OIII 496nm\u0026amp;500nm, SII 672nm and H-beta 486nm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePrecision off-band blocking, specifically the major emission lines of artificial light pollution (i.e. Na 589nm, Hg 435nm and 578nm).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e2. L-Pro Spectrum and \u003c\/strong\u003e\u003cstrong\u003eCharacteristic\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20210703\/eb917cc4efb4f6591d2d660c9922c256.png\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e※This curve is only for reference, and is not used as the final product data.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHow to read the chart?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e▲The horizontal axis is the Wavelength in Nanometers(nm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e▲The vertical axis is transmission in %.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e▲The RED line shows the transmission of the filter. The artifical emission lines are shown in ORANGE. And the emission lines from constellation are shown in GREEN.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/0ff2d7f395c427aa390ff53daf333cec.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e3. Coating Technology\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e·Multi-layers anti-reflection coating\u003c\/p\u003e\n\u003cp\u003e·Non-cementing optical substrate coating\u003c\/p\u003e\n\u003cp\u003e·Optolong L-Pro filter adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.\u003c\/p\u003e\n\u003cp\u003e·Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"http:\/\/optolong.com\/uploads\/images\/20200716\/22c5068a8f4783079f93c42761aa9238.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e4. Gloable Price\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable align=\"center\" border=\"1\" cellpadding=\"1\" cellspacing=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eL-Pro Gloable MAP                      \u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e     Unit Price in USD dollars    \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e1.25\"(1 1\/4\" mounted)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e$149.00\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e2\" mounted\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e$199.00\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eM77 mounted\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e$289.00\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eEOS-C clip\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e$249.00\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eEOS-FF clip\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e$269.00\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eNK-FF clip\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e$269.00\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eSony-FF clip\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e$269.00\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e5.Package \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/f778991ef77732079f9b4bfa1f7010d4.png\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cu\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/9be9f501063812f34002518b35d63397.png\"\u003e\u003c\/strong\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e2019 NEW package\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/3560d00b15da118371c12766c074710d.png\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/497e351dc95fe824244ce6bf6135cbd0.png\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e6. Optolong L-Pro Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eI Comparason image was shot by Arnaud Besancon\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAll the pictures have been realised with 5D3 Astrodon modded and Samyang 24mm F1,4 at F2, 13s exp. time,3600 isos.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAll the pictures are raw,without post-process\u003cbr\u003e.\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/1f41cc683d82eb630d00c0a1b720cc7d.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eII The Vortex galaxy by \u003cu\u003eLuca Fornaciari Astrophotography\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptolong Astronomy Filter L-Pro 2''\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/63dbffff45a843a389c78f87a4419a8f.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIII Ran into Red Sprite again©\u003cu\u003eVincent Cheng\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Red Sprite is a TLEs (Transient Luminous Events) from the atmosphere, and is part of a family of small creatures that also include even harder to photograph, from rogue sprites to blue jets.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eby \u003ca dir=\"ltr\" href=\"https:\/\/twitter.com\/Optolong_filter\"\u003eOptolong_filter\u003c\/a\u003e  2\" L-Pro filter\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/ca216bf0ad6c1a5443e818c95f5f8ff1.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅣ When the skies were absolutely STEADY, \u003cu\u003eJim Mayercak\u003c\/u\u003e shot this Luna\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ecannot recall EVER having such good \"seeing\" conditions. The most beautiful Lunar shot to date.Celestron CGEM DX 1100 EDGE HD ZWO ASI071PRO\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptolong L-Pro filter\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/2ef3b8715943c9ac74dbae7b56e92f82.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eV Here the final Image of comet 46\/P Wirtanen and the Pleiades, shot by \u003cu\u003eBlake Estes\u003c\/u\u003e.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis imaging run ended up being a marathon that took about 22 hours of processing, using Optolong L-Pro filter for imaging. Its absolutely perfect!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/2a16eb558c57ca48867aca785b779b84.png\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅥ.  Veil Nebula shot by \u003cu\u003eAndrea Andreotto Maggi\u003c\/u\u003e with Optolong L-Pro filter 2''\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe L-Pro filter filter allowed me to obtain long poses without saturating the stars and to obtain a good separation between the nebula and the sky background while keeping the colors unaltered.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20191111\/768c5042c97e131f6d9e82b2ca0f9676.jpg\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eVII. M33, imaged by Valerio Avitabile(Italy)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTecnosky apo 102\/714 ridotto a 585mm\u003cbr\u003eEQ6-R mount\u003cbr\u003eAsi294 pro raffreddata a -10°\u003cbr\u003eGuida con Artesky 60\/240 e Asi224mc\u003c\/p\u003e\n\u003cp\u003e85x300sec gain120 con filtro\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003cu\u003e\u003cstrong\u003eOptolong L-Pro 2\"\u003c\/strong\u003e\u003c\/u\u003e\u003c\/span\u003e\u003cbr\u003e41 Dark ,35 flat, 25 darkflat \u003c\/p\u003e\n\u003cp\u003eAstro photography tools, Phd2 Guiding, eqmod, PixInsight 1.8 e photoshop\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003ca href=\"http:\/\/https\/\/www.facebook.com\/photo?fbid=2039177929548968\u0026amp;set=gm.611697359521466\"\u003e\u003cimg alt=\"\" src=\"https:\/\/www.optolong.com\/uploads\/images\/20200921\/a4b729a70cce05981875d0f9115d027f.jpg\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eWarm prompt\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●About color: due to the influence of ambient light, color difference of the display and flash photography, the color of the product may have some color difference. Detailed color is in accordana with the final product.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●About coating: the interference filter will show different colors under different light, which is a normal phenomenon. Please refer to the material object.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●About the style: in order to improve the product, the change of design\/appearance\/parameters has not been updated in time. Please see the subject produce.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●About the description: the series of this product have the same material, technology and design, different sizes only, please note.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25\"","offer_id":42296597217457,"sku":"OPT-L-PRO-1.25","price":97.0,"currency_code":"GBP","in_stock":true},{"title":"2\"","offer_id":42296597250225,"sku":"OPT-L-PRO-2","price":179.0,"currency_code":"GBP","in_stock":true},{"title":"EOS-C","offer_id":42296622416049,"sku":"OPT-L-PRO-eos-c","price":169.0,"currency_code":"GBP","in_stock":false},{"title":"Full Frame EOS","offer_id":42296622448817,"sku":"OPT-L-PRO-FF-EOS","price":185.0,"currency_code":"GBP","in_stock":true},{"title":"Full Frame Nikon","offer_id":42296622481585,"sku":"OPT-L-PRO-FF-NIKON","price":185.0,"currency_code":"GBP","in_stock":true},{"title":"Full Frame Sony","offer_id":42296622514353,"sku":"OPT-L-PRO-FF-SONY","price":199.0,"currency_code":"GBP","in_stock":true},{"title":"EOS-R","offer_id":42296622547121,"sku":"OPT-L-PRO-EOS-R","price":215.0,"currency_code":"GBP","in_stock":true},{"title":"77mm","offer_id":42296622579889,"sku":"OPT-L-PRO-77","price":199.0,"currency_code":"GBP","in_stock":true},{"title":"82mm","offer_id":42296622612657,"sku":"OPT-L-PRO-82","price":234.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0523\/1650\/4241\/files\/optolong-l-pro-filters-341581.webp?v=1718364481"}],"url":"https:\/\/www.darkclearskies.co.uk\/collections\/optolong-hub-broadband.oembed","provider":"Dark Clear Skies ","version":"1.0","type":"link"}