{"title":"Light Pollution \u0026 Broadband","description":"\u003cp\u003eLight Pollution \u0026amp; Broadband from every brand we carry. Part of \u003ca href=\"\/collections\/filters\"\u003eFilters\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"uhc-filter-2","title":"Explore Scientific 2-inch UHC Nebula Filter","description":"\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eOne of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lights, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects bejond the solar systems enourmously. Depending on the type of the celestial object it is possible to increase the contrast dramatically by blocking the annoying artifical light. \u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eThe Explore Scientific UHC filter uses a characteristic property of the so called emmission nebulae. Those objects glow in special colors, the so called emmission lines. Those emmission lines are linked to chemical elements - in this case hydrogen at 486nm and 656nm, plus oxygen at 496nm and 501nm. \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eThe Explore Scientific UHC nebula filter blocks all other colors (and thereby nearly all of the artificial light) and only the emmission line of the hydrogen and oxygen can pass the filter. The result is astonishing: suddenly nebulae are visible at locations that were completely empty without filters. In suburbian skies for example the Owl-nebula M97, the Veil-nebula Ngc 6992 or even the bright Dumbell-nebula M27are not clearly visible.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eBy using this filter you can see the nebulae and their structures without problems. A must for every visual observer. The Explore Scientific nebula filters come with a individual test certificate - your guarantee to receive a premium filter.\u003c\/span\u003e   \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(50, 50, 50); font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 16.2px; background-color: rgb(255, 255, 255);\"\u003e UHC Nebula Filter. Range from 458nm to 508nm with peak at 488nm. Peak transmission 96.7%\u003c\/span\u003e\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44013255852143,"sku":"310210","price":184.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0310210_PAC_small__35622.jpg?v=1766550360"},{"product_id":"cls-fliter-2","title":"Explore Scientific 2-inch CLS Light Pollution Reduction Nebula Filter","description":"\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 13px; font-family: 'Source Sans Pro', sans-serif;\"\u003eOne of the most important obstacles for the exploration of the night sky is the brightening of the night sky by artificial lights, such as streetlights. The night sky is not really dark in the vicinity of towns or cities, which reduces the visibility of objects beyond the solar systems enormously. \u003c\/span\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: \" source sans pro sans-serif font-size: background-color: rgb\u003eThe Explore Scientific CLS nebula filter blocks those colors and thereby increases contrast - the light ot the celestial objects can pass the filter. The result is astonishing: suddenly objects are visible at locations that were completely empty without filters. In suburban skies for example the large galaxy M101, the Veil-nebula Ngc 6992 or even the bright Dumbbell-nebula M27 are not clearly visible. By using this filter you can see the nebulae and their structures. \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eThe Explore Scientific nebula filters come with a individual test certificate - your guarantee to receive a premium filter.\u003c\/span\u003e  \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: 'Source Sans Pro', sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(50, 50, 50); font-family: Arial, Helvetica, sans-serif; font-size: 12px; line-height: 16.2px; background-color: rgb(255, 255, 255);\"\u003eExplore Scientific 2\" CLS City Light Pollution Reduction Filter. Range from 436nm to 536nm with peak at 488nm. Peak transmission 98.3%\u003c\/span\u003e\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44013257850991,"sku":"310220","price":162.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0310220_PAC_small__15891.jpg?v=1766550373"},{"product_id":"uhc-lpr-filter-2-in","title":"UHC\/LPR FILTER - 2 IN","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eOur 2\" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow).\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe new ultra high contrast (UHC) LPR filter has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. The advanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass, with total blockage of prominent light pollution lines. The perfect filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eIn addition to it's optimum spectral and optical characteristics, the UHC\/LPR filter offers important features that set it apart and result in the highest quality celestial views:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eImproved transmission translates to maximum image brightness and contrast. Users of smaller, 4\"-11\" telescopes will especially appreciate the high efficiency, and larger scope users will love the rich star fields and detailed subtle nebular shadings that are left intact. \u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe high transmission, sharp cutoffs, and more moderate 60nm passband of the UHC\/LPR filter retains a more natural view, yet significantly boosts overall contrast. Imagers will appreciate the broader bandpass and inclusion of an extremely efficient H-Alpha passband (656nm).\u003c\/span\u003e\u003c\/div\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013342064751,"sku":"94124","price":173.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/94124_2-inch_filter_01__94735.jpg?v=1766550843"},{"product_id":"baader-1-25-uhc-s-1-25","title":"Baader 1.25\" UHC-S 1.25\"","description":"\u003ccenter style=\"margin: 15px 0px; padding: 0px; font-family: \" open sans sans-serif font-size:=\"\"\u003e\n\u003ch3 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.5em; color: rgb(235, 2, 53); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003e1¼\" and 2\" Baader UHC-S DeepSky Filter\u003c\/h3\u003e\n\u003ch4 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.2em; color: rgb(99, 99, 99); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003ePlaneoptically Polished\u003c\/h4\u003e\n\u003ch2 style=\"margin: 0px; padding: 0px; font-size: 16px;\"\u003e\u003cdiv class=\"leftImage\" style=\"box-sizing: border-box; margin: 0px 15px 1em 0px; padding: 0px; vertical-align: top; float: left; clear: left; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; background-color: rgb(255, 255, 255); width: 300px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/filterset-UHCS_854d302f-b4d0-4294-8bff-4165bbba887d.jpg?v=1766551451\" alt=\"Baader UHC-S DeepSky - All Filters\" width=\"300\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003cdiv class=\"imageCaption\" style=\"box-sizing: border-box; margin: 0px; padding: 0.5em 0.5em 0px; clear: both; font-size: 0.846em;\"\u003eAll Baader UHC-S DeepSky Filter\u003cbr style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"\u003e1¼\", 2\", 50.4 mm, 50x50 mm\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/h2\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003ePlaneoptically polished for the highest images quality. Produces a much brighter image with superb contrast than a conventional Nebula filter. Excellent for openings from 100mm.\u003c\/p\u003e\n\u003ch4 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.2em; color: rgb(99, 99, 99); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003eBaader UHC-S Nebula Filter with highest transmission and realistic star colours!\u003c\/h4\u003e\n\u003ch2 style=\"margin: 0px; padding: 0px; font-size: 16px;\"\u003e\u003c\/h2\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eA new class of LPR Nebula filters finally delivering the happy medium, with enough light for smaller telescope openings at the same time with the high contrast of classical UHC filter.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eLight pollution from street lights is blocked carefully. The filter is the sensible addition to all previous deep sky and UHC filters. Both for visual as well as photographic use.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eAll filters produce a brighter image and are optically polished with ultra-hard dielectric coatings. They are absolutely scratch resistant and can be cleaned as often as needed, ideally with Baader Optical Wonder Cleaning Fluid.\u003c\/p\u003e\n\u003c\/center\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44013368180847,"sku":"FUHC-1","price":134.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/gross_uhc-s-l-booster-filter_125inch_optically_polished__77268.jpg?v=1766551454"},{"product_id":"baader-uhc-s-2","title":"Baader UHC-S 2\"","description":"\u003ccenter style=\"margin: 15px 0px; padding: 0px; font-family: \" open sans sans-serif font-size:=\"\"\u003e\n\u003ch3 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.5em; color: rgb(235, 2, 53); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003e1¼\" and 2\" Baader UHC-S DeepSky Filter\u003c\/h3\u003e\n\u003ch4 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.2em; color: rgb(99, 99, 99); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003ePlaneoptically Polished\u003c\/h4\u003e\n\u003ch2 style=\"margin: 0px; padding: 0px; font-size: 16px;\"\u003e\u003cdiv class=\"leftImage\" style=\"box-sizing: border-box; margin: 0px 15px 1em 0px; padding: 0px; vertical-align: top; float: left; clear: left; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; background-color: rgb(255, 255, 255); width: 300px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/filterset-UHCS_e1bc47b7-6664-4950-9978-530539b74d62.jpg?v=1766551461\" alt=\"Baader UHC-S DeepSky - All Filters\" width=\"300\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003cdiv class=\"imageCaption\" style=\"box-sizing: border-box; margin: 0px; padding: 0.5em 0.5em 0px; clear: both; font-size: 0.846em;\"\u003eAll Baader UHC-S DeepSky Filter\u003cbr style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"\u003e1¼\", 2\", 50.4 mm, 50x50 mm\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/h2\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003ePlaneoptically polished for the highest images quality. Produces a much brighter image with superb contrast than a conventional Nebula filter. Excellent for openings from 100mm.\u003c\/p\u003e\n\u003ch4 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.2em; color: rgb(99, 99, 99); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003eBaader UHC-S Nebula Filter with highest transmission and realistic star colours!\u003c\/h4\u003e\n\u003ch2 style=\"margin: 0px; padding: 0px; font-size: 16px;\"\u003e\u003c\/h2\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eA new class of LPR Nebula filters finally delivering the happy medium, with enough light for smaller telescope openings at the same time with the high contrast of classical UHC filter.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eLight pollution from street lights is blocked carefully. The filter is the sensible addition to all previous deep sky and UHC filters. Both for visual as well as photographic use.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eAll filters produce a brighter image and are optically polished with ultra-hard dielectric coatings. They are absolutely scratch resistant and can be cleaned as often as needed, ideally with Baader Optical Wonder Cleaning Fluid.\u003c\/p\u003e\n\u003c\/center\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44013368606831,"sku":"FUHC-2","price":199.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/uhc-s-l-booster-filter_2inch__68687.jpg?v=1766551464"},{"product_id":"baader-moon-and-skyglow-filter-1-25","title":"Baader Moon and Skyglow Filter 1.25\"","description":"\u003ch3 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.5em; color: rgb(235, 2, 53); font-family: \" open sans sans-serif optimizespeed rgb line-height:=\"\" text-rendering:=\"\" background-color:=\"\"\u003e1¼\" and 2\" Neodymium Lunar \u0026amp; Skyglow Filter\u003c\/h3\u003e\u003ch4 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.2em; color: rgb(99, 99, 99); font-family: \" open sans sans-serif optimizespeed rgb line-height:=\"\" text-rendering:=\"\" background-color:=\"\"\u003eWith integrated IR blocker and Phantom Group Coating\u003c\/h4\u003e\u003cdiv class=\"leftImage\" style=\"box-sizing: border-box; margin: 0px 15px 1em 0px; padding: 0px; font-family: \" open sans sans-serif center top left rgb text-align:=\"\" vertical-align:=\"\" float:=\"\" clear:=\"\" color:=\"\" font-size:=\"\" background-color:=\"\" width:=\"\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/125_200_neodymium_gross_7fb2cfbc-524e-47a1-be6c-2e1a078bcae4.jpg?v=1766551499\" alt=\"D¼\" und=\"\" neodymium=\"\" mond-=\"\" skyglowfilter width=\"300\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003cdiv class=\"imageCaption\" style=\"box-sizing: border-box; margin: 0px; padding: 0.5em 0.5em 0px; clear: both; font-size: 0.846em;\"\u003e¼\" and 2\" Neodymium Lunar \u0026amp; Skyglow Filter\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv style=\"box-sizing: border-box; margin: 0px; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px;\"\u003eThe best visual and photographic filter for contrast enhancement for all Newtonian and SC-mirror telescopes, we have ever offered! Brighter and sharper than ever! Long a dream for all CCD users, our Skyglow \u0026amp; Moon filter with IR Cut coating !! The filter effect is much more neutral in colour and much brighter thanks for our Phantom Group Coating. If you want to escape a city brightened sky - without taking a trip - the new IR Moon \u0026amp; Skyglow filter is the solution.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px;\"\u003eCompare with the moon \u0026amp; Skyglow filter before the naked eye, to test the effectiveness. Red and blue colours are extensively strengthened. If you cannot see the GRS (Great Red Spot) due to pollution try this which will allow you to see it.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px;\"\u003eIn order to establish a precise plan area and to maintain the planarity despite the applied forces through the different layers of coating, a high technical effort is necessary. You have to choose from a large amount of raw glass only the best pieces in tension-free annealed quality to even hope for a good final quality may. All too easily, the glass deforms with improper preparation or coating on older evaporation systems. The final product is almost useless, if not greatest of care is taken at every stage of production.\u003c\/p\u003e\n\u003cul style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; list-style-position: outside; list-style-image: initial;\"\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eSelective contrast filter, especially suitable for all reflector telescopes.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eFilters specifics wavelengths especially street lights and skyglow from the Moon without suppressing the visibility of colour and brightness differences. The result is a filter that leaves natural colours intact with RGB significantly enhanced.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003e95% transmission in the selected spectral ranges.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eFits all standard filter threads and can be combined with other filters\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eThe filter is also optimised for Astrophotography due to it's full IR-blocking. When used with dSLRs stars are much sharper as the unfocussed IR is blocked.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eUltra-hard and durable Ion-beam hardened coatings and may be cleaned anytime without fear, ideally with Baader Optical Wonder Cleaning Fluid.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.5em; color: rgb(235, 2, 53); font-family: \" open sans sans-serif optimizespeed rgb line-height:=\"\" text-rendering:=\"\" background-color:=\"\"\u003eSpectral Curve of the Moon \u0026amp; Skyglow Filter\u003c\/h3\u003e\u003cdiv class=\"leftImage\" style=\"box-sizing: border-box; margin: 0px 15px 1em 0px; padding: 0px; font-family: \" open sans sans-serif center top left rgb text-align:=\"\" vertical-align:=\"\" float:=\"\" clear:=\"\" color:=\"\" font-size:=\"\" background-color:=\"\" width:=\"\"\u003e\n\u003ca class=\"image-popup\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/moon-skyglow-wavelength_fcd9d5c0-89d2-42a2-bc09-9d3240047cd4.jpg?v=1766551503\" target=\"_blank\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration: none; transition: all 0.2s;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/moon-skyglow-wavelength_fcd9d5c0-89d2-42a2-bc09-9d3240047cd4.jpg?v=1766551503\" alt=\"Spectral curve of Moon \u0026amp; Skyglow Filter\" width=\"250\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003c\/a\u003e\u003cdiv class=\"imageCaption\" style=\"box-sizing: border-box; margin: 0px; padding: 0.5em 0.5em 0px; clear: both; font-size: 0.846em;\"\u003eSpectral curve of the Moon \u0026amp; Skyglow filter\u003c\/div\u003e\n\u003c\/div\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eThe adjacent graph shows you the spectral curve of our Neodymium Moon \u0026amp; Skyglow filters. On the horizontal axis, the wavelength in nanometers, and the vertical axis is the transmission amount (opacity) specified in percent.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eThe area under the curve is the spectral range that can pass through the filter.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44013368836207,"sku":"FMS-1","price":103.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/bad_fms_1__21455.jpg?v=1766551505"},{"product_id":"baader-moon-and-skyglow-filter-2","title":"Baader Moon and Skyglow Filter 2\"","description":"\u003ch3 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.5em; color: rgb(235, 2, 53); font-family: \" open sans sans-serif optimizespeed rgb line-height:=\"\" text-rendering:=\"\" background-color:=\"\"\u003e1¼\" and 2\" Neodymium Lunar \u0026amp; Skyglow Filter\u003c\/h3\u003e\u003ch4 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.2em; color: rgb(99, 99, 99); font-family: \" open sans sans-serif optimizespeed rgb line-height:=\"\" text-rendering:=\"\" background-color:=\"\"\u003eWith integrated IR blocker and Phantom Group Coating\u003c\/h4\u003e\u003cdiv class=\"leftImage\" style=\"box-sizing: border-box; margin: 0px 15px 1em 0px; padding: 0px; font-family: \" open sans sans-serif center top left rgb text-align:=\"\" vertical-align:=\"\" float:=\"\" clear:=\"\" color:=\"\" font-size:=\"\" background-color:=\"\" width:=\"\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/125_200_neodymium_gross_138a9174-f683-4607-a1ac-58c491e91c8a.jpg?v=1766551513\" alt=\"D¼\" und=\"\" neodymium=\"\" mond-=\"\" skyglowfilter width=\"300\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003cdiv class=\"imageCaption\" style=\"box-sizing: border-box; margin: 0px; padding: 0.5em 0.5em 0px; clear: both; font-size: 0.846em;\"\u003e¼\" and 2\" Neodymium Lunar \u0026amp; Skyglow Filter\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv style=\"box-sizing: border-box; margin: 0px; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px;\"\u003eThe best visual and photographic filter for contrast enhancement for all Newtonian and SC-mirror telescopes, we have ever offered! Brighter and sharper than ever! Long a dream for all CCD users, our Skyglow \u0026amp; Moon filter with IR Cut coating !! The filter effect is much more neutral in colour and much brighter thanks for our Phantom Group Coating. If you want to escape a city brightened sky - without taking a trip - the new IR Moon \u0026amp; Skyglow filter is the solution.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px;\"\u003eCompare with the moon \u0026amp; Skyglow filter before the naked eye, to test the effectiveness. Red and blue colours are extensively strengthened. If you cannot see the GRS (Great Red Spot) due to pollution try this which will allow you to see it.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px;\"\u003eIn order to establish a precise plan area and to maintain the planarity despite the applied forces through the different layers of coating, a high technical effort is necessary. You have to choose from a large amount of raw glass only the best pieces in tension-free annealed quality to even hope for a good final quality may. All too easily, the glass deforms with improper preparation or coating on older evaporation systems. The final product is almost useless, if not greatest of care is taken at every stage of production.\u003c\/p\u003e\n\u003cul style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; list-style-position: outside; list-style-image: initial;\"\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eSelective contrast filter, especially suitable for all reflector telescopes.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eFilters specifics wavelengths especially street lights and skyglow from the Moon without suppressing the visibility of colour and brightness differences. The result is a filter that leaves natural colours intact with RGB significantly enhanced.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003e95% transmission in the selected spectral ranges.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eFits all standard filter threads and can be combined with other filters\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eThe filter is also optimised for Astrophotography due to it's full IR-blocking. When used with dSLRs stars are much sharper as the unfocussed IR is blocked.\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin: 0px 0px 0px 2em; padding: 0px;\"\u003eUltra-hard and durable Ion-beam hardened coatings and may be cleaned anytime without fear, ideally with Baader Optical Wonder Cleaning Fluid.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.5em; color: rgb(235, 2, 53); font-family: \" open sans sans-serif optimizespeed rgb line-height:=\"\" text-rendering:=\"\" background-color:=\"\"\u003eSpectral Curve of the Moon \u0026amp; Skyglow Filter\u003c\/h3\u003e\u003cdiv class=\"leftImage\" style=\"box-sizing: border-box; margin: 0px 15px 1em 0px; padding: 0px; font-family: \" open sans sans-serif center top left rgb text-align:=\"\" vertical-align:=\"\" float:=\"\" clear:=\"\" color:=\"\" font-size:=\"\" background-color:=\"\" width:=\"\"\u003e\n\u003ca class=\"image-popup\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/moon-skyglow-wavelength_89515c96-80e9-4d98-92fc-04805a1e2a94.jpg?v=1766551517\" target=\"_blank\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; touch-action: manipulation; color: rgb(235, 2, 53); text-decoration: none; transition: all 0.2s;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/moon-skyglow-wavelength_89515c96-80e9-4d98-92fc-04805a1e2a94.jpg?v=1766551517\" alt=\"Spectral curve of Moon \u0026amp; Skyglow Filter\" width=\"250\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003c\/a\u003e\u003cdiv class=\"imageCaption\" style=\"box-sizing: border-box; margin: 0px; padding: 0.5em 0.5em 0px; clear: both; font-size: 0.846em;\"\u003eSpectral curve of the Moon \u0026amp; Skyglow filter\u003c\/div\u003e\n\u003c\/div\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eThe adjacent graph shows you the spectral curve of our Neodymium Moon \u0026amp; Skyglow filters. On the horizontal axis, the wavelength in nanometers, and the vertical axis is the transmission amount (opacity) specified in percent.\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; font-family: \" open sans sans-serif rgb color:=\"\" font-size:=\"\" background-color:=\"\"\u003eThe area under the curve is the spectral range that can pass through the filter.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44013368868975,"sku":"FMS-2","price":188.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/bad_fms_1__50707.jpg?v=1766551519"},{"product_id":"1-25-uhc-filter","title":"1.25\" UHC Filter","description":"\u003ch1\u003e\u003cspan style=\"font-size:20.0pt;mso-bidi-font-size:24.0pt;font-family:\" arial mso-fareast-font-family: new roman\u003eOverview\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/h1\u003e  \u003cp\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial\u003eOur 1-1\/4\" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengt...\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003ch1\u003e\u003cspan style=\"font-size:20.0pt;mso-bidi-font-size:24.0pt;font-family:\" arial mso-fareast-font-family: new roman\u003eDescription\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/h1\u003e  \u003cp\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial\u003eOur 1-1\/4\" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light. This includes mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. sky glow).\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial\u003eThe new ultra high contrast (UHC) LPR filter has improved contrast over the typical broadband filters. Sky background is darker, and contrast of emission nebulae are noticeably improved. The advanced technology coatings enable the filter to achieve an outstanding transmission of over 97% across the entire bandpass, with total blockage of prominent light pollution lines. The perfect filter for viewing nebula from light polluted skies, or for boosting the contrast of nebula from dark sky sites.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial\u003eIn addition to it's optimum spectral and optical characteristics, the UHC\/LPR filter offers important features that set it apart and result in the highest quality celestial views:\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial\u003eThe multi-layer dielectric coatings are plasma assisted and Ionbeam hardened using the latest technology for durability and resistance to scratching.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial\u003eImproved transmission translates to maximum image brightness and contrast. Users of smaller, 4\"-11\" telescopes will especially appreciate the high efficiency, and larger scope users will love the rich star fields and detailed subtle nebular shadings that are left intact. \u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp\u003e\u003cspan style=\"font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:\" arial\u003eThe high transmission, sharp cutoffs, and more moderate 60nm passband of the UHC\/LPR filter retains a more natural view, yet significantly boosts overall contrast. Imagers will appreciate the broader bandpass and inclusion of an extremely efficient H-Alpha passband (656nm).\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013369098351,"sku":"94123","price":131.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/94123_UHC-LPR__252520Filter_1-25_1__67613.1682640001.1280.1280.jpg?v=1766551558"},{"product_id":"light-polution-imaging-filter-for-rasa","title":"Light Polution Imaging filter for RASA","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eTake beautiful images of deep-sky objects from light-polluted suburban locations with the Rowe-Ackermann Schmidt Astrograph (RASA) using this all-new light pollution suppression filter designed by Celestron and Astrodon, the leading astroimaging filter company.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eCustom fit to drop into RASA s optical window, so you get optimum optical performance even with the addition of the filter.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eSelectively removes unwanted light pollution while allowing more overall light transmission to pass through to the sensor. Provides over 90% transmission at critical wavelengths.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eMaintains a more neutral color balance than other light pollution imaging filters, perfect for imaging colorful nebulae and galaxies.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003eEvery filter is individually tested for light transmission. A graph of test results for your specific filter is included for your reference a valuable service unique to Astrodon.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 24pt; line-height: 107%; font-family: Arial, sans-serif; text-transform: uppercase; font-weight: bold;\"\u003eDESCRIPTION\u003c\/span\u003e\u003cspan style=\"font-size:24.0pt;mso-bidi-font-size:22.5pt;line-height:107%;font-family: \" arial\u003e\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp class=\"MsoNormal\" style=\"box-sizing: border-box\"\u003e\u003cspan style=\"font-size:12.0pt; mso-bidi-font-size:11.0pt;line-height:107%;font-family:\" arial\u003e\u003c\/span\u003eGet the most out of your Celestron Rowe-Ackermann Schmidt Astrograph, even under light-polluted skies, with this Light Pollution Imaging Filter, custom-designed for RASA by Celestron and Astrodon.\u003cbr style=\"box-sizing: border-box\"\u003e \u003cbr style=\"box-sizing: border-box\"\u003e No matter which camera you use, this filter s generous 72 mm diameter allows it to easily accommodate today s largest sensors.\u003cbr style=\"box-sizing: border-box\"\u003e \u003cbr style=\"box-sizing: border-box\"\u003e \u003cstrong style=\"box-sizing: border-box\"\u003e\u003cspan style=\"font-size:12.0pt; mso-bidi-font-size:13.5pt;line-height:107%;font-family:\" arial color:\u003eCELESTRON S OPTICAL DESIGN, ENHANCED BY ASTRODON\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:12.0pt; mso-bidi-font-size:11.0pt;line-height:107%;font-family:\" arial\u003e\u003cbr style=\"box-sizing: border-box\"\u003e Astrodon, the world s leading imaging filter company, collaborated with Celestron engineers to create a filter for the Rowe-Ackermann Schmidt Astrograph. The result is the best light pollution suppression filter for astroimaging. The filter replaces a piece of placeholder glass in the optical path, so that RASA s precise optical path is unaltered.\u003cbr style=\"box-sizing: border-box\"\u003e \u003cbr style=\"box-sizing: border-box\"\u003e \u003c\/span\u003e\u003cstrong style=\"box-sizing: border-box\"\u003e\u003cspan style=\"font-size:12.0pt; mso-bidi-font-size:13.5pt;line-height:107%;font-family:\" arial color:\u003eREMOVE LIGHT POLLUTION WHILE KEEPING YOUR IMAGES BRIGHT\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:107%;font-family: \" arial\u003e\u003cbr style=\"box-sizing: border-box\"\u003e Light pollution limits how much of the night sky we can see and photograph.  When imaging with a color camera in light polluted areas, skyglow degrades image quality. Light pollution filters help to selectively block light emitted from common streetlights and other ambient lighting.  But most light pollution filters greatly compromise the total light throughput, causing dim images, and negatively impact the color balance, causing images to appear too green or blue.\u003cbr style=\"box-sizing: border-box\"\u003e \u003cbr style=\"box-sizing: border-box\"\u003e The Light Pollution Imaging Filter for RASA  surgically  removes unwanted light pollution while preserving as much of the useful spectrum as possible. That means you ll still retain over 90 percent of the light captured by your telescope at many wavelengths.\u003cbr style=\"box-sizing: border-box\"\u003e \u003cbr style=\"box-sizing: border-box\"\u003e Unlike other light pollution suppression filters, the new Celestron LP Imaging Filter for RASA maintains a neutral color balance. Dielectric coatings further enhance light transmission, so you can bring out subtle color in galaxies and other faint deep sky objects. Meanwhile, anti-reflective coatings prevent star halos and minimize internal reflections.\u003cbr style=\"box-sizing: border-box\"\u003e \u003cbr style=\"box-sizing: border-box\"\u003e \u003c\/span\u003e\u003cstrong style=\"box-sizing: border-box\"\u003e\u003cspan style=\"font-size:12.0pt; mso-bidi-font-size:13.5pt;line-height:107%;font-family:\" arial color:\u003eINDIVIDUALLY TESTED FOR QUALITY\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size: 11.0pt;line-height:107%;font-family:\" arial\u003e\u003cbr style=\"box-sizing: border-box\"\u003e \u003c\/span\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height: 107%;font-family:\" arial\u003eEvery Celestron Light Pollution Imaging Filter is tested individually for light transmission. Inside the box, you ll receive the actual transmission spectrum for your specific filter. Your report is prepared by Astrodon and matched to your filter s serial number, so you have total confidence in your filter s performance.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e  \u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size:12.0pt;mso-bidi-font-size:11.0pt; line-height:107%;font-family:\" arial\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013376405615,"sku":"93617","price":940.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/93617_LPIF_comparison__10907.jpg?v=1766552169"},{"product_id":"baader-uhc-s-36mm","title":"Baader UHC-S 36mm","description":"\u003ccenter style=\"margin: 15px 0px; padding: 0px; font-family: \" open sans sans-serif font-size:=\"\"\u003e\n\u003ch3 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.5em; color: rgb(235, 2, 53); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003e36mm Baader UHC-S DeepSky Filter\u003c\/h3\u003e\n\u003ch4 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.2em; color: rgb(99, 99, 99); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003ePlaneoptically Polished\u003c\/h4\u003e\n\u003ch2 style=\"margin: 0px; padding: 0px; font-size: 16px;\"\u003e\u003cdiv class=\"leftImage\" style=\"box-sizing: border-box; margin: 0px 15px 1em 0px; padding: 0px; vertical-align: top; float: left; clear: left; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; background-color: rgb(255, 255, 255); width: 300px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/filterset-UHCS_73742e4c-1b74-4d53-8367-c7613053a2b4.jpg?v=1766553003\" alt=\"Baader UHC-S DeepSky - All Filters\" width=\"300\" style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: none; display: block;\"\u003e\u003cdiv class=\"imageCaption\" style=\"box-sizing: border-box; margin: 0px; padding: 0.5em 0.5em 0px; clear: both; font-size: 0.846em;\"\u003eAll Baader UHC-S DeepSky Filter\u003cbr style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"\u003e1¼\", 2\", 50.4 mm, 50x50 mm\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/h2\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003ePlaneoptically polished for the highest images quality. Produces a much brighter image with superb contrast than a conventional Nebula filter. Excellent for openings from 100mm.\u003c\/p\u003e\n\u003ch4 style=\"box-sizing: border-box; margin: 0px 0px 0.75em; padding: 0px; font-size: 1.2em; color: rgb(99, 99, 99); line-height: 1.4; text-rendering: optimizeSpeed; text-align: start; background-color: rgb(255, 255, 255);\"\u003eBaader UHC-S Nebula Filter with highest transmission and realistic star colours!\u003c\/h4\u003e\n\u003ch2 style=\"margin: 0px; padding: 0px; font-size: 16px;\"\u003e\u003c\/h2\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eA new class of LPR Nebula filters finally delivering the happy medium, with enough light for smaller telescope openings at the same time with the high contrast of classical UHC filter.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eLight pollution from street lights is blocked carefully. The filter is the sensible addition to all previous deep sky and UHC filters. Both for visual as well as photographic use.\u003c\/p\u003e\n\u003cp style=\"box-sizing: border-box; margin: 0px 0px 1.5em; padding: 0px; color: rgb(34, 34, 34); font-size: 13px; font-weight: normal; text-align: start; background-color: rgb(255, 255, 255);\"\u003eAll filters produce a brighter image and are optically polished with ultra-hard dielectric coatings. They are absolutely scratch resistant and can be cleaned as often as needed, ideally with Baader Optical Wonder Cleaning Fluid.\u003c\/p\u003e\n\u003c\/center\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44013398949999,"sku":"FUHC-RD36","price":146.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/baader-uhc-s-filter-2459420-36mm-round__59145.jpg?v=1766553006"},{"product_id":"light-pollution-imaging-filter-rasa-8","title":"LIGHT POLLUTION IMAGING FILTER, RASA 8","description":"\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eLight pollution in the night sky can significantly degrade contrast in astronomical images. This is especially true when using very fast telescopes like the 8” RASA because the sky background saturates very quickly. The “noise” of the light pollution overwhelms the “signal” from the celestial object you are imaging, making it difficult to get the most detailed image. The Light Pollution Imaging Filter for the 8” RASA remedies this by blocking light pollution while transmitting light from deep-sky objects. The result is bright, detailed objects that pop off the black sky background with superior contrast.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eFortunately, many sources of light pollution have relatively discreet emission spectra; they emit primarily at specific wavelengths of light. By strategically blocking these wavelengths, the filter greatly reduces the effects of light pollution without degrading overall image quality.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe Light Pollution Imaging (LPI) Filter for the 8” RASA blocks light from some of the most common sources of light pollution between 400-700nm (i.e., the visible spectrum), including high- and low-pressure sodium-vapor streetlights, mercury-vapor streetlights, and natural airglow caused by oxygen in the atmosphere. Unlike some light pollution filters, the LPI filter blocks only specific areas of the spectrum instead of wide regions. This helps to maintain image brightness and color balance. In addition, specific wavelengths associated with emission nebulae, such as H-a(656nm), H-ß (486nm), OIII (496nm and 501nm), and SII (672nm), are highly transmitted, ensuring minimal loss of image brightness for those objects.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px 0px 15px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eThe filter fits directly into the internal filter mount in the RASA 8’s front lens cell, where the optical window normally mounts. By removing the clear window and replacing it with the filter, optical performance for the entire system is maintained.\u003c\/p\u003e\u003cp style=\"box-sizing: inherit; margin: 0px; padding: 0px; color: rgb(51, 62, 72); font-family: \" open sans arial helvetica sans-serif font-size:=\"\"\u003eEach filter comes with a plastic storage case to safely store the filter or the placeholder glass that came with your RASA when not in use. You will also receive a spectral transmission graph unique to your specific unit, verifying its performance.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44013458194543,"sku":"93614","price":390.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/93614_Light_Polution_Filter_RASA_8_01_570x3802x__28642.jpg?v=1766553601"},{"product_id":"lps-d2-52mm-filter","title":"LPS-D2 52mm Filter","description":"\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eIDAS LPS-D2 Newest Generation Nebula Filter\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eIDAS is one of the pioneers in the development of modern and effective Nebula filters for suppression of city light pollution. These filters allow for astrophotography close to a city and deliver optimal results. IDAS Nebula filters cause a significant contrast enhancement and therefore enable longer exposure times with DSLRs, Color and Mono Astro Cameras.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe IDAS LPS-D2 Nebula filter is designed specifically for color cameras. The filter provides better color balance than any other filter for DSLR and also for One-Shot Color cameras with CMOS sensors, as offered by ZWO and QHY. Of course there is also a substantial improvement when working with Mono cameras, e.g. when exposing Luminance.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe exposure time can be multiplied by a factor of 3. This means, that you are able to expose three times as long than without a filter, before the sky background becomes visible. On the contrary, the light which the Nebula emits passes unhindered. This results in a significant contrast enhancement and makes Nebula photography possible, where it otherwise would not, even close to cities. Galaxy and Cluster photography also greatly benefits from the LPS-D2.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe LPS-D2 Filter suppresses the high-pressure-Sodium line and parts of the LED spectrum.Modern light sources, like LED, have changed the spectrum of the unwanted stray light for astrophotography. The new IDAS LPS-D2 filter compensates for this, and even suppresses those line\u003c\/span\u003e\u003c\/div\u003e","brand":"Idas Filters","offers":[{"title":"Default Title","offer_id":44013473464431,"sku":"LPS-D2-52","price":259.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/d248__26953.jpg?v=1766554368"},{"product_id":"idas-night-glow-suppression-filters","title":"IDAS Night Glow Suppression Filters","description":"\u003cspan style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eDAS Night Glow Filters enhance the contrast of astronomical emission nebulae against a sky with both man-made and natural* sky glow sources, yet preserve color balance of broadband objects such as galaxies. As with other IDAS interference filters, the bandpasses are designed to accommodate the steep ray angles of fast optical systems.\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cul style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003eIdeal flat-top and moderate bandpass\u003c\/li\u003e\n\u003cli\u003eExcellent in-band transmission\u003c\/li\u003e\n\u003cli\u003eSteep bandpass edges minimize internal reflections\u003c\/li\u003e\n\u003cli\u003eNear IR (NIR) is blocked up to 1200nm\u003c\/li\u003e\n\u003cli\u003eAvailable in 52mm and 48mm sizes\u003c\/li\u003e\n\u003cli\u003e2.5mm thickness (parfocal with other IDAS LPS filters)\u003c\/li\u003e\n\u003cli\u003eIDAS-proprietary \u003ca href=\"https:\/\/www.sciencecenter.net\/hutech\/idas\/idastech.htm\"\u003eIGAD\/MBT\/UFP\u003c\/a\u003e quality\u003c\/li\u003e\n\u003cli\u003eMade in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e* Natural sky glow sources blocked include upper atmosphere oxygen and sodium lines which become visible from high-altitude, dark sky sites. See videos at the bottom of this page for background information on natural sky glow.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial, Helvetica, sans-serif; font-size: 10pt;\"\u003e\u003ch3\u003eAdditional Information on Natural Sky Glow\u003c\/h3\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003ciframe width=\"376\" height=\"212\" src=\"https:\/\/www.youtube.com\/embed\/EwqWdy_ZUX8\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003ciframe width=\"376\" height=\"212\" src=\"https:\/\/www.youtube.com\/embed\/n_MJDL2m_8w\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e","brand":"Idas Filters","offers":[{"title":"Default Title","offer_id":44013529170031,"sku":"NGS1","price":254.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/IDAS-Filters-Night-Glow-Suppression-Filter-NGS1-52mm__09233.jpg?v=1766554881"},{"product_id":"1-25-moon-skyglow-filter","title":"1.25\" Moon\u0026Skyglow Filter","description":"\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003eMoon \u0026amp; Skyglow filter is designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artificial light. Its high efficiency preserves image brightness, reveals more details and increases contrast of moon, galaxies, nebulae and globular star clusters.\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eIdeally it is quite versatile filter for visual observation and astrophotography on planetary nebula.\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\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\/ul\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eOptical substrate material\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eThickness 2.0mm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt;30 seconds parallelism over the both surface\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eCoating Parameter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eMulti-layers anti-reflection coating\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eNon-cementing optical substrate coating\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\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\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003ePlanetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eFilter Cell\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eUltra-thin filter cell minimize vignetting by maximize possible clear aperture (clear aperture is 26mm for 1.25”; 45mm for 2”)\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eAerometal Material | Precise CNC Machining | Sand Blasting Process | Black Anodized Finish | Extinction Treatment to Prevent Reflection | Laser Engraving No Fading\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003ePlastic PP Case | Imported High Pressure EVA Case Lining | Silver Cardboard Box | High Density Sponge Carton Lining\u003c\/li\u003e\u003c\/ul\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013529464943,"sku":"MS-1","price":49.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong_moonsky_glow__79718.jpg?v=1766554923"},{"product_id":"2-moon-skyglow-filter","title":"2\" Moon\u0026Skyglow Filter","description":"\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003eMoon \u0026amp; Skyglow filter is designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artificial light. Its high efficiency preserves image brightness, reveals more details and increases contrast of moon, galaxies, nebulae and globular star clusters.\u003c\/p\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eIdeally it is quite versatile filter for visual observation and astrophotography on planetary nebula.\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\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\/ul\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eOptical substrate material\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eThickness 2.0mm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eFine-optically polished to ensure accurate 1\/4 wavefront and \u0026lt;30 seconds parallelism over the both surface\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eCoating Parameter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eMulti-layers anti-reflection coating\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eNon-cementing optical substrate coating\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\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\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003ePlanetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eFilter Cell\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eUltra-thin filter cell minimize vignetting by maximize possible clear aperture (clear aperture is 26mm for 1.25”; 45mm for 2”)\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eAerometal Material | Precise CNC Machining | Sand Blasting Process | Black Anodized Finish | Extinction Treatment to Prevent Reflection | Laser Engraving No Fading\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003ePlastic PP Case | Imported High Pressure EVA Case Lining | Silver Cardboard Box | High Density Sponge Carton Lining\u003c\/li\u003e\u003c\/ul\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013529497711,"sku":"MS-2","price":74.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong_moonsky_glow__45152.jpg?v=1766554931"},{"product_id":"1-25-uhc-light-pollution-filter","title":"1.25\" UHC Light Pollution Filter","description":"\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003eThe UHC (Ultra High Contrast) 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\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\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\/p\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eSuitable for color CCD cameras and unmodified DSLRs\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e UHC with narrower passband provides higher contrast than CLS. Thus it is more suitable for urban environment where you suffer from severe light pollution.\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e UHC has a substantial red passband and offer superb views for objects like the Orion Nebula (M42)\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e Light 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\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e \u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e \u003c\/span\u003eThe 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\/ul\u003e\u003cdiv\u003e\n\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eSpectral Curve\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\u003cstrong\u003eThe Major Emission Lines of Nebulae\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eH-ß486.1nm OIII 495.9nm OIII 500.7nm H-a656.3nm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\u003cstrong\u003eThe Major Emission Lines of Artificial Light Pollution\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eHg 435.8nm 546.1nm 577nm 578.1nm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eNa 598nm 589.6nm 615.4nm 616.1nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013529530479,"sku":"UHC-1","price":79.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong_uhc__14118.jpg?v=1766554937"},{"product_id":"2-uhc-light-pollution-filter","title":"2\" UHC Light Pollution Filter","description":"\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003eThe UHC (Ultra High Contrast) 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\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\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\/p\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eSuitable for color CCD cameras and unmodified DSLRs\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e UHC with narrower passband provides higher contrast than CLS. Thus it is more suitable for urban environment where you suffer from severe light pollution.\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e UHC has a substantial red passband and offer superb views for objects like the Orion Nebula (M42)\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e Light 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\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e \u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e \u003c\/span\u003eThe 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\/ul\u003e\u003cdiv\u003e\n\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eSpectral Curve\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\u003cstrong\u003eThe Major Emission Lines of Nebulae\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eH-ß486.1nm OIII 495.9nm OIII 500.7nm H-a656.3nm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\u003cstrong\u003eThe Major Emission Lines of Artificial Light Pollution\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eHg 435.8nm 546.1nm 577nm 578.1nm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eNa 598nm 589.6nm 615.4nm 616.1nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013529563247,"sku":"UHC-2","price":124.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong_uhc__63992.jpg?v=1766554943"},{"product_id":"1-25-cls-ccd-light-pollution-filter","title":"1.25\" CLS-CCD Light Pollution Filter","description":"\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\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\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/p\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e \u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eCLS-CCD is different from CLS with infrared wavelength 700-1100nm cut-off\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eFit with color CCD cameras and modified DSLRs for astrophotography\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eWork well on most emission nebulae, planetary nebulae and supernova remnants\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eNoticeable boost in contrast and visibility of the fainter outer detail\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\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\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\n\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e \u003c\/span\u003eThe 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\/ul\u003e\u003cdiv\u003e\n\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eSpectral Curve\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\u003cstrong\u003eThe Major Emission Lines of Nebulae\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e H-ß486.1nm OIII 495.9nm OIII 500.7nm H-a656.3nm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\u003cstrong\u003eThe Major Emission Lines of Artificial Light Pollution\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eHg 435.8nm 546.1nm 577nm 578.1nm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eNa 598nm 589.6nm 615.4nm 616.1nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013529596015,"sku":"CLS-CCD-1","price":139.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong_cls-ccd__51848.jpg?v=1766554949"},{"product_id":"2-cls-ccd-light-pollution-filter","title":"2\" CLS-CCD Light Pollution Filter","description":"\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\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\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/p\u003e\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e \u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eCLS-CCD is different from CLS with infrared wavelength 700-1100nm cut-off\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eFit with color CCD cameras and modified DSLRs for astrophotography\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eWork well on most emission nebulae, planetary nebulae and supernova remnants\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eNoticeable boost in contrast and visibility of the fainter outer detail\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\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\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\n\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e \u003c\/span\u003eThe 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\/ul\u003e\u003cdiv\u003e\n\u003cp style=\"margin: 0px 0px 15px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(255, 102, 0);\"\u003e\u003cstrong\u003eSpectral Curve\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"padding: 0px; margin: 0px 0px 10px 25px; font-family: Arial, sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\u003cstrong\u003eThe Major Emission Lines of Nebulae\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e H-ß486.1nm OIII 495.9nm OIII 500.7nm H-a656.3nm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003e\u003cstrong\u003eThe Major Emission Lines of Artificial Light Pollution\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eHg 435.8nm 546.1nm 577nm 578.1nm\u003c\/li\u003e\n\u003cli style=\"line-height: 20px; padding: 0px; margin: 0px;\"\u003eNa 598nm 589.6nm 615.4nm 616.1nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013529628783,"sku":"CLS-CCD-2","price":229.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong_cls-ccd__57951.jpg?v=1766554956"},{"product_id":"l-pro-filter-1-25","title":"L-Pro Filter 1.25\"","description":"\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eThe L-Pro (L-Professional) filter is \u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003ebest light pollution filter with multi-bandpass filter which offers better color balance by maximizing the transmission band.\u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e 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). It 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 \u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eCheck out Trevor's review of the L-Pro from Optolong\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003ccenter style=\"box-sizing: border-box; color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cbr style=\"box-sizing: border-box;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/xSY3_fjaKIA\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" style=\"box-sizing: border-box; max-width: 100%;\"\u003e\u003c\/iframe\u003e\n\u003c\/center\u003e\n\u003cspan style=\"color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013529792623,"sku":"L-Pro-1","price":179.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong-l-pro-filter-125inch__76399.jpg?v=1766554973"},{"product_id":"l-pro-filter-2","title":"L-Pro Filter 2\"","description":"\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eThe L-Pro (L-Professional) filter is \u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003ebest light pollution filter with multi-bandpass filter which offers better color balance by maximizing the transmission band.\u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e 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). It 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 \u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eCheck out Trevor's review of the L-Pro from Optolong\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003ccenter style=\"box-sizing: border-box; color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cbr style=\"box-sizing: border-box;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/xSY3_fjaKIA\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" style=\"box-sizing: border-box; max-width: 100%;\"\u003e\u003c\/iframe\u003e\n\u003c\/center\u003e\n\u003cspan style=\"color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013529825391,"sku":"L-Pro-2","price":254.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong-l-pro-filter-125inch__01695.jpg?v=1766554979"},{"product_id":"l-pro-filter-for-canon-aps-c-cameras","title":"L-Pro Filter for Canon APS-C cameras","description":"\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eThe L-Pro (L-Professional) filter is \u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003ebest light pollution filter with multi-bandpass filter which offers better color balance by maximizing the transmission band.\u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e 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). It 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 \u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eCheck out Trevor's review of the L-Pro from Optolong\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003ccenter style=\"box-sizing: border-box; color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cbr style=\"box-sizing: border-box;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/xSY3_fjaKIA\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" style=\"box-sizing: border-box; max-width: 100%;\"\u003e\u003c\/iframe\u003e\n\u003c\/center\u003e\n\u003cspan style=\"color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013530251375,"sku":"L-Pro-EOS","price":319.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Canon_252520APS-c_252520Lpro__63720.1682640321.1280.1280.jpg?v=1766554985"},{"product_id":"l-pro-filter-for-canon-full-frame-cameras","title":"L-Pro Filter for Canon Full Frame cameras","description":"\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255); font-weight: bold;\"\u003eThis Canon full frame filter will fit the Canon 5D, 5D Mark II , 5D Mark III, and 6D only\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eThe L-Pro (L-Professional) filter is \u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003ebest light pollution filter with multi-bandpass filter which offers better color balance by maximizing the transmission band.\u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lighting 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). It 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 \u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eCheck out Trevor's review of the L-Pro from Optolong\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003ccenter style=\"box-sizing: border-box; color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cbr style=\"box-sizing: border-box;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/xSY3_fjaKIA\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" style=\"box-sizing: border-box; max-width: 100%;\"\u003e\u003c\/iframe\u003e\n\u003c\/center\u003e\n\u003cspan style=\"color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013530284143,"sku":"L-Pro-EOS-FF","price":346.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong-Clip-Filter-for-Canon-EOS-FF-L-Pro__32913.jpg?v=1766554991"},{"product_id":"l-pro-filter-for-nikon-full-frame-cameras","title":"L-Pro Filter for Nikon Full Frame cameras","description":"\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255); font-weight: bold;\"\u003eThis Nikon full frame filter will fit the Nikon D600, 610, 700, 750, 800, 800E, 810, 810A, DF\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eThe L-Pro (L-Professional) filter is \u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003ebest light pollution filter with multi-bandpass filter which offers better color balance by maximizing the transmission band.\u003c\/span\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e 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). It 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 \u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: rgb(255, 255, 255);\"\u003eCheck out Trevor's review of the L-Pro from Optolong\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003ccenter style=\"box-sizing: border-box; color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cbr style=\"box-sizing: border-box;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/xSY3_fjaKIA\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\" style=\"box-sizing: border-box; max-width: 100%;\"\u003e\u003c\/iframe\u003e\n\u003c\/center\u003e\n\u003cspan style=\"color: rgb(61, 61, 61); font-family: Roboto; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/span\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013530316911,"sku":"L-Pro-NIK-FF","price":349.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/optolong-l-pro-filter-nikon-ff__45080.jpg?v=1766554998"},{"product_id":"l-pro-filter-for-sony-full-frame-cameras","title":"L-Pro Filter for Sony Full Frame cameras","description":"\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #ffffff; font-weight: bold;\"\u003eThis Sony full frame filter will fit the Sony A7M, A7M2, A7M3, A7R, A7R2, A7R3, A7S, A7S2, A9\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #ffffff;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cp\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). 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 both visual and photograghic purpose at sub-rural area with heavy light pollution.\u003cbr\u003eUnlike other light pollution filter UHC and CLS, 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\u003eMain Use and Performance\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.Light 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\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\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNew Frame of Sony-FF Clip-in Filter Specifications\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellspacing=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eRaw material\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eoptical glass\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThickness\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.0mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBlocking range\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e300-750nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBlocking depth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003elight polluton line blocking\u0026gt;90%\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSurface quality\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e60\/40\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSurface shape\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eλ\/4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eParallelism\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e30s\u003c\/span\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 \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e3. Spectrum for Reference\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/7c815045ba97fb81bf0f0f6ebcf30612_1959f5b4-bf60-4fa2-8f00-311351a2f4f7.jpg?v=1766555005\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e4.  New Frame of Optolong Sony-FF Clip Filter\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellspacing=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSony-FF specification\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eL-Pro\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApplicable Camera\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eA7M\/ A7M2\/ A7M3、A7R\/ A7R2\/ A7R3、A7S\/ A7S2\/ A7S3、A9\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApplicable Lenses\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFull range of E-mount main and auxiliary lens \u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e※  Due to limit lens resource, we only test the popular lens in market. If any available lens, feel free to contact Optolong customer service staff. We appreicate for your valuab testing information.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e5. How to install and remove?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e►\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/33c8423ec8ad9afe1da8288b5e3df5ce_2554ef03-c54d-490d-b0f3-ae439f4c1cf7.png?v=1766555007\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePut the camera body flat, the top of the filter \"OPTOLONG\" (the magnetic suction is on the back) into the body first (as shown in Figure 1), fixed by hand at the top, and then adjust the filter position, done for imaging (as shown in Figure 2).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e►\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eRemoving the Filter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/d704857628aa3195f91058ca6bd8e7d0_2208d125-9757-495a-aeb0-3d03db711ad9.png?v=1766555009\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAfter putting the camera body flat, use the triangle piece aid to tilt the filter gently (as shown in Figure 1), and remove the filter once it is loosened. Be sure to avoid scratch the lens and the camera!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e►\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eVideo Direction\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eKindly click below image to review video about how to install and remove the filter at Optolong \u003cstrong\u003e\u003ca href=\"https:\/\/youtu.be\/PV1j3nZ69Kk\"\u003eYouTube channel\u003c\/a\u003e\u003c\/strong\u003e. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ca href=\"https:\/\/youtu.be\/PV1j3nZ69Kk\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/2bd2ac520fadc033eb4d913029b34817_88ea60b9-dfbe-4b74-a703-c70681fad3f3.png?v=1766555010\" alt=\"\"\u003e\u003c\/a\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\u003e6. Packing: \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOuter Box: silve box\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlastic Box: PP material\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLining: imported high pressure white EVA material\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eShipment kit of new frame Sony-FF L-Pro clip: \u003cstrong\u003e\u003cu\u003eL-Pro filter, Trangle piece and installation instructions\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/a1e0ef63a008e4635a9286ee44cd3f4f_7cd8a9cc-afee-43ad-a72a-5cb72c332a05.jpg?v=1766555012\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/901c018b5909bc701ba44a55541c5c5b_6e20d7b8-d155-43fd-a029-1a8f90a1c77b.jpg?v=1766555014\" alt=\"\"\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\u003e7. New Frame of Sony-FF Clip-in Filter L-Pro Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eI  Milky Way by Vincent Cheng\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCamera : Sony A7s mod Lens : f2 @ Tokia FiRIN 20mm ISO 6400 exp time : 20s by Vincent Cheng\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/71def0e70d8987ca73c8ceb5cd3d899f_93568235-046c-4546-a8ee-917ab69e64d9.jpg?v=1766555015\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eII by Vincent Cheng\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCamera : Sony A7s mod Lens : f2 @ Tokia FiRIN 20mm ISO 3200 exp time : 20s by Vincent Cheng\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1c5af52c5e04a6e51a57d96ebfca7146_23f21928-e095-4019-a9e1-477e3b240df4.png?v=1766555017\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIII Comparason image was shot by \u003cu\u003eArnaud Besancon\u003c\/u\u003e\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\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003e.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/64ea8f99ce850f20e6f2afd4a503d576_80d47a2f-3653-4085-8f7f-b63eefe09a54.jpg?v=1766555019\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIV M42 compare image by \u003cu\u003eLuca Fornaciari Astrophotography\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6a49a37b140c2be652e593edf2292836_018fe441-e983-4dd1-9444-e303153d48ae.jpg?v=1766555020\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eV The Horsehead Nebula©\u003cu\u003eLuca Fornaciari Astrophotography\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ba7b265d595e8ad401204a9f6eb9a813_cb9ae0a9-8ab6-4b16-b54d-6b2228342e42.jpg?v=1766555022\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eVI M31 Andromeda by \u003cu\u003eGary J Palmer\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eImaged earlier in the week with a bright moon. 150 x 60 seconds processed in Pixinsight. SHARPSTAR 86mm Quad ZWO 094 PRO in ROI \u003cstrong\u003e\u003cu\u003eOptolong L-Pro\u003c\/u\u003e\u003c\/strong\u003e filter Sharpcap\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ee5023b46a4fad69a169ea0d8f0a446b_dde60652-fff5-4eb0-9bd5-d314ff8a3e03.jpg?v=1766555024\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eVII 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 \u003cu\u003e\u003cstrong\u003eOptolong L-Pro\u003c\/strong\u003e\u003c\/u\u003e filter for imaging. Its absolutely perfect!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/cb49783642bed9a76a66acdee33dc5cc_b9480660-170e-40b9-9a13-a20198b15ea1.jpg?v=1766555025\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif; font-size: 13.3333px; background-color: #ffffff;\"\u003eCheck out Trevor's review of the L-Pro from Optolong\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ccenter style=\"box-sizing: border-box; color: #3d3d3d; font-family: Roboto; font-size: 15px; background-color: #ffffff;\"\u003e\n\u003cbr style=\"box-sizing: border-box;\"\u003e\u003ciframe style=\"box-sizing: border-box; max-width: 100%;\" src=\"https:\/\/www.youtube.com\/embed\/xSY3_fjaKIA\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\n\u003c\/center\u003e\n\u003cspan style=\"color: #3d3d3d; font-family: Roboto; font-size: 15px; background-color: #ffffff;\"\u003e \u003c\/span\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013530480751,"sku":"L-Pro-SONY-FF","price":346.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong-L-Pro-Sony-FF-for-Astrophotography-wild-filed-Light-Pollution-Filters__01920.jpg?v=1766555028"},{"product_id":"48mm-lps-p3-filter","title":"48mm LPS-P3 Filter","description":"\u003cp style=\"box-sizing: border-box; -webkit-font-smoothing: subpixel-antialiased; margin: 1em 0px; line-height: 18px; color: rgb(66, 66, 66); font-family: 'open sans', arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eThe Japanese-made IDAS P3 LPS is in our opinion the BEST Light Pollution Suppression filter for astro photography with DSLR, colour and mono CCD cameras. \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; -webkit-font-smoothing: subpixel-antialiased; margin: 1em 0px; line-height: 18px; color: rgb(66, 66, 66); font-family: 'open sans', arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003e\u003c\/span\u003eLight pollution suppression (LPS) filters are designed to suppress the common emission lines generated by artificial lighting, yet allow the important nebula emission lines to pass, thus enhancing the contrast of astronomical objects, particularly emission nebulae (see filter plots).\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; -webkit-font-smoothing: subpixel-antialiased; margin: 1em 0px; line-height: 18px; color: rgb(66, 66, 66); font-family: 'open sans', arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003eUnlike other light pollution suppression filters, IDAS filters are specifically designed for balanced colour transmission using the IDAS unique Multi-Bandpass Technology (MBT) process. The balanced transmission allows colour photographs to be taken with minimal colour cast to broadband emission objects such as stars, galaxies and globular clusters. \u003cbr style=\"box-sizing: border-box; -webkit-font-smoothing: subpixel-antialiased;\"\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; -webkit-font-smoothing: subpixel-antialiased; margin: 1em 0px; line-height: 18px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"color: rgb(66, 66, 66); font-family: \" open sans arial sans-serif font-size:\u003eIDAS LPS filters utilize the unique IDAS Ion Gun Assisted Deposition (IGAD) coating technology for superior coating durability (quartz hardness) and safer cleaning. IGAD coatings also improve temperature and humidity stability, reducing spectrum shifts down to +\/-1nm from the +\/-3 or 4nm shift of standard coatings. \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; -webkit-font-smoothing: subpixel-antialiased; margin: 1em 0px; line-height: 18px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-size: 13px; font-weight: bold; font-family: \" open sans arial sans-serif color: rgb\u003eFeatures for LPS-P3 are\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; -webkit-font-smoothing: subpixel-antialiased; margin: 1em 0px; line-height: 18px; background-color: rgb(255, 255, 255);\"\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 13px; color: rgb(66, 66, 66); font-family: \" open sans arial sans-serif\u003ePrimary target light pollution to be suppressed are mercury and high\/low sodium vapor lines. So different concept from LPS-D2 and NGS1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 13px; font-family: \" open sans arial sans-serif color: rgb\u003eMore strongly blocking UV and NIR until 1200nm than previous models.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 13px; font-family: \" open sans arial sans-serif color: rgb\u003eColor balance is more tweaked for astro one-shot color cameras.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 13px; font-family: \" open sans arial sans-serif color: rgb\u003eHigher and flatter transmission peaks while deeper optical density for blocking sections – higher image contrast and less reflections possible\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; -webkit-font-smoothing: subpixel-antialiased; margin: 1em 0px; line-height: 18px; color: rgb(66, 66, 66); font-family: 'open sans', arial, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Idas Filters","offers":[{"title":"Default Title","offer_id":44013619216495,"sku":"LPS-P3-48","price":264.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/LPS-P3-48a__14314.jpg?v=1766557785"},{"product_id":"idas-lps-d3-formerly-ngs1-light-pollution-suppression-filters","title":"IDAS LPS-D3 (formerly NGS1) Light Pollution Suppression Filters","description":"\u003cspan style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eDAS LPS-D3 (formerly NGS1) light pollution suppression filters enhance the contrast of astronomical emission nebulae against a sky with both man-made and natural* sky glow sources, yet preserve color balance of broadband objects such as galaxies. As with other IDAS interference filters, the bandpasses are designed to accommodate the steep ray angles of fast optical systems.\u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cul style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003eIdeal flat-top and moderate bandpass\u003c\/li\u003e\n\u003cli\u003eExcellent in-band transmission\u003c\/li\u003e\n\u003cli\u003eSteep bandpass edges minimize internal reflections\u003c\/li\u003e\n\u003cli\u003eNear IR (NIR) is blocked up to 1200nm\u003c\/li\u003e\n\u003cli\u003eAvailable in 52mm and 48mm sizes\u003c\/li\u003e\n\u003cli\u003e2.5mm thickness (parfocal with other IDAS LPS filters)\u003c\/li\u003e\n\u003cli\u003eIDAS-proprietary \u003ca href=\"https:\/\/www.sciencecenter.net\/hutech\/idas\/idastech.htm\"\u003eIGAD\/MBT\/UFP\u003c\/a\u003e quality\u003c\/li\u003e\n\u003cli\u003eMade in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote style=\"font-family: Arial, Helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e\n\u003csup\u003e*\u003c\/sup\u003e Natural sky glow sources blocked include upper atmosphere oxygen and sodium lines which become visible from high-altitude, dark sky sites. See videos at the bottom of this page for background information on natural sky glow.\u003c\/blockquote\u003e\n\u003c\/div\u003e","brand":"Idas Filters","offers":[{"title":"Default Title","offer_id":44013652279407,"sku":"LPS-D3-48","price":259.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/D348__61710.jpg?v=1766558689"},{"product_id":"idas-gnb-filter-1-25","title":"IDAS GNB Filter 1.25\"","description":"\u003cdiv\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-size:12.0pt;font-family:\" arial new roman\u003eThe IDAS GNB uses near-infrared\r\nlight in addition to the characteristics of the conventional NB series to\r\ncapture high-contrast images of galaxies, star clusters, and emission nebulae.\u003co:p\u003e\u003c\/o:p\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-size: 12pt; font-family: Arial, sans-serif;\"\u003eIn the visible region (wavelength\r\n400-700nm), where there is a lot of light pollution, it has the characteristics\r\nof a nebula booster that is resistant to \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif; font-size: 12pt;\"\u003elight pollution.\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif; font-size: 12pt;\"\u003eIt is especially effective in\r\none-shot color image sensors with high infrared sensitivity (IMX585, etc.). This\r\nfilter is coated with high-density, high-durability aging-less IAD (Ion Assist\r\nDeposition) similar to IGAD (Ion-Gun Assist Deposition) used in LPS-D3 and NBZ\r\n.\u003c\/span\u003e\u003c\/p\u003e\r\n\r\n\u003cp class=\"MsoNormal\" style=\"margin-bottom:0cm;line-height:normal\"\u003e\u003cspan style=\"font-family: Arial, sans-serif; font-size: 12pt;\"\u003eThe durability of the thin film\r\nis high, and the hardness of the thin film is comparable to quartz glass.\u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif; font-size: 12pt;\"\u003e  \u003c\/span\u003e\u003cspan style=\"font-family: Arial, sans-serif; font-size: 12pt;\"\u003eAdhesion between the multilayer thin film and\r\nthe filter substrate is also significantly improved. Changes over time in\r\nspectral characteristics due to temperature and humidity are almost\r\nnon-existent in the environment where humans live.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Idas Filters","offers":[{"title":"Default Title","offer_id":44013800030319,"sku":"LPS-GNB-1","price":320.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/IDAS-GNB-286-v4_252520-_252520Edited__18200.1682641088.1280.1280.png?v=1766563155"},{"product_id":"l-pro-filter-for-canon-eos-r","title":"L-Pro Filter for Canon EOS-R","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIntroduction\u003c\/strong\u003e\u003cbr\u003eIn suburban areas with weak light pollution, the color balance is good. The design of multi-band pass ensures excellent color restoration. L-Pro is a low color cast filter, which specially designed for starry sky photography. That is not possible with other light pollution filters\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\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). 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 both visual and photograghic purpose at sub-rural area with heavy light pollution.\u003cbr\u003eUnlike other light pollution filter UHC and CLS, 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\u003eMain Use and Performance\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.Light 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\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\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eL-Pro EOS-R Compatible Cameras and Lens\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable border=\"0\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e\u003cspan\u003eL-Pro EOS-R Compatible Cameras and Lens\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eApplicable camera body\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eEOS R\/Ra、EOS RP、EOS R5、EOS R6\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eApplicable Lenses\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eFull range of RF main and auxiliary lens\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFull range of EF main and auxiliary lens (adapter is required）\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003eTips:Due to limit lens resource, we only test the popular lens in market. If any available lens, feel free to contact Optolong customer service staff. We appreicate for your testing information.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e1.3 Installation and Removing Instructions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/05d4e7c40914b3fee0917bfae39de551_a7728982-92a6-4c56-b39f-5905f423a0ca.png?v=1766568078\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eEOS-R L-Pro Clip More Explanation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDue to the particularity of Canon R series micro-single optical path, aperture design and light incident Angle, slight dark angle interference will occur when using interference filter for imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThere are two solutions to solve peripheral interference phenomenon：\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1\u0026gt;Cut out the interference areas of pictures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e2\u0026gt;By post processing via RAW (attach video tutorials).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/fb71928f6bfa47cd97bb18af518262a4_6d5e3201-6d23-48e6-a96b-ed7b370cc7a8.png?v=1766568079\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFinal version the Milkway by EOS R L-Pro.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCanon R+Canon RF15-35 f\/2.8+L-Pro clip Image came from domestic astrophotographer ©拂晓_718\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/01be58ed32f0d7d38f95787acc3e6ad3_02a3b108-048f-4c58-9b3f-41fed9dfa0e9.png?v=1766568081\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eL-Pro Spectrum and Characteristic\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAccording to the relatively light pollution in suburbs, the image does not produce obvious color deviation phenomenon. The multi-band spectrum is specially designed and optimized as shown in the figure below.\u003cbr\u003ePeak transmittance:  T\u0026gt;90%\u003cbr\u003eBlocking range: 380nm-750nm\u003cbr\u003eBlcoking depth: light pollution  line blocking \u0026gt;90%\u003cbr\u003eSurface quality: 60\/40(Refer to MIL-O-13830)\u003cbr\u003eTransmitted Wavefront RMS: λ\/4\u003cbr\u003e Parallelism: 30s\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/7c815045ba97fb81bf0f0f6ebcf30612_d9c3c9c4-576e-4a46-9069-ce997422eecd.jpg?v=1766568083\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eHow to read the chart?\u003c\/strong\u003e\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 line of L-Pro 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 src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0ff2d7f395c427aa390ff53daf333cec_1a998e48-1507-47db-9346-75562f454fd6.jpg?v=1766568086\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCoating Technology\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e·Multi-layers anti-reflection coating\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e·Non-cementing optical substrate coating\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\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\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\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\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/22c5068a8f4783079f93c42761aa9238_cde8eac0-5d4b-4980-938a-6330aeffeaaf.png?v=1766568089\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003ePacking\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOuter Box: silve box\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlastic Box: PP material\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLining: imported high pressure white EVA material\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/a1e0ef63a008e4635a9286ee44cd3f4f_6175bb08-6023-4bbf-8983-d79955eb91d2.jpg?v=1766568092\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/901c018b5909bc701ba44a55541c5c5b_0de03426-90d2-4474-a2d2-f6b6852bc1c3.jpg?v=1766568095\" alt=\"\"\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\u003eL-Pro Imaging Target and Working Environment\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eImaging Target:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn light pollution environment, it suits for imaging the Milky Way at all seasons with wide Angle lens；\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn light pollution environment, it suits for imaging deep sky objects at all seasons;\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for continuous spectrum of celestial objects, such as nebulae, galaxy, Milky Way, etc.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWorking Environment\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eL-Pro is suitable for level 3-7 according to the Botel dark space classification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/17d50b8f6e8f12d7bb33d6ed590b7b40_a5c834bc-9511-4e93-b248-82fca8b79ef6.jpg?v=1766568097\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e7. 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 src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1f41cc683d82eb630d00c0a1b720cc7d_f961caf8-340e-4521-9c33-ff0c695e1a62.jpg?v=1766568099\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eII Antares Rho-Ophiuchi Complex, imaged by Mehmet Ergün\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eLa Palma.. It was gorgeous .. Both the island and the night sky. Mehmet brought a few gigabytes of data.\u003cbr\u003eObject: Antares Rho-Ophiuchi Complex\u003cbr\u003eEQUIPMENT\u003cbr\u003eASKAR ACL200 APO\u003cbr\u003eSharpstar Optics\u003cbr\u003eNikon Z6a CentralDS \u003cbr\u003eRST-135\u003cbr\u003eMGEN 3\u003cbr\u003eOptolong L-pro\u003cbr\u003eOptolong Astronomy Filter\u003cbr\u003eEXIF:\u003cbr\u003e50 x 240sec. \/ ISO1600 \/ 200mm \/ F4\u003cbr\u003e+ Flats\u003cbr\u003eFullframe, no crop    \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=367951258011027\u0026amp;set=a.220016599471161\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/94747d73296d3a22f848c4b073c8a88e_2f6edec7-df45-4c14-b18c-d43ba6bb0ac4.jpg?v=1766568100\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIII Probably the most colorful and beautiful corner of our galaxy .., imaged by Mehmet Ergün\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eEQUIPMENT\u003cbr\u003eNikon Z6a CentralDS\u003cbr\u003eSamyang 50mm f1.4\u003cbr\u003eRainbow RST-135\u003cbr\u003eOptolong L-Pro\u003cbr\u003eLocation:\u003cbr\u003eATHOS Centro Astronómico La Palma\u003cbr\u003eLa Palma \/ 2021\u003cbr\u003eEXIF: \u003cbr\u003e90 x 240sec. \/ ISO1600 \/ F4 \/ 50mm   \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo\/?fbid=4293181824064956\u0026amp;set=gm.818913218993391\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6a1de42dc82aba5159c130971e4a501b_73ff89a4-b3bb-4ecc-90de-036e1dd4e58d.jpg?v=1766568102\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eⅣ The Andromeda Galaxy from Chuck’s Astrophotography\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Andromeda Galaxy is back in the night sky.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eby Optolong L-Pro filter\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.facebook.com\/photo?fbid=228069719322609\u0026amp;set=a.124838279645754\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/1bb81db9154f7e3d5170f89927e47d9b_fe8524c5-ad8c-42a2-a25e-1b99cb00b8f2.jpg?v=1766568103\" alt=\"\"\u003e\u003c\/a\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/8145909652ea8e4169fe0d9ecc56c0fd_f8868e54-7e3a-4aeb-8758-7090d2895ca4.png?v=1766568105\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\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●When using NK-FF \/EOS-FF clip-in filters, the lifting of the reflector will affect the optical viewfinder window (OVF), so you have to use Live View mode for shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●Due to the different lens optical design of different manufacturers, part use of fisheye lens, ultra wide Angle lens and wide Angle lens may lead to image fuzzy at around. It is normal. Or you can choose L-Pro UT, the ultra-thin model to solve this problem.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●Some entry-level models may fail to focus when using optical viewfinder (OVF) due to different focusing system designs. Using Live View(real-time display) mode for shooting will be recommended.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●Pls DO NOT shoot directly at a strong light source, because that may produce secondary reflection and lead to the degradation of image quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e●When removing the clip-in filter, please place the camera flat and face up to avoid the filter touching the rear of the lens.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\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\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44014031437935,"sku":"L-Pro-EOS-R","price":319.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/L-Pro-R__71879.jpg?v=1766568107"},{"product_id":"lcls","title":"LCLS","description":"\u003cp\u003e\u003cspan\u003eEver type, indexable handles. Fits leg clamps, replacing round knobs. Indexable so they can be moved out of the way.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003ePLEASE NOTE: Levers are only compatible with HD Folding Tripod\u003c\/div\u003e","brand":"Losmandy","offers":[{"title":"Default Title","offer_id":44014049394799,"sku":"LCLS","price":88.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/LCLS__20885.jpg?v=1766568943"},{"product_id":"lcls-ft","title":"LCLS-FT","description":"\u003cp\u003e\u003cspan\u003eLever type, indexable handles, Set of 3. Fits leg clamps of Folding Tripod, replacing round knobs. Indexable so they can be moved out of the way.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003ePLEASE NOTE: Levers are only compatible with HD Folding Tripod\u003c\/div\u003e","brand":"Losmandy","offers":[{"title":"Default Title","offer_id":44014049525871,"sku":"LCLS-FT","price":44.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/LCLSFT__07387.jpg?v=1766568948"},{"product_id":"explore-scientific-1-25-inch-cls-light-pollution-reduction-filter","title":"Explore Scientific 1.25-inch CLS Light Pollution Reduction Nebula Filter","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Explore Scientific CLS Nebula Filter is a 1.25-inch light pollution reduction filter intended for general deep sky observing from skies that are not truly dark. Explore Scientific describes it as a general-purpose light-pollution reduction filter for a broad range of deep sky objects, and publishes a wavelength range of 436nm to 536nm with peak transmission at 488nm and a transmission rate of 98.3 per cent. That passband sits directly over the blue-green region where the strongest visual emission lines of nebulae live, so the light you want arrives with very little loss while a good deal of the sky glow around it is held back. It is item 310225 and threads into the barrel of any standard 1.25-inch eyepiece.\u003c\/p\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis filter is for the observer whose sky is the limiting factor rather than the telescope. If you are working from a driveway in a town or a suburb, the problem is rarely resolution or aperture; it is that the background of the field is grey instead of black, and faint extended objects simply do not have enough contrast against it to register. A CLS filter attacks that directly. Rather than making the object brighter, it darkens the field around it, and the object separates from the background because the ratio between the two has changed.\u003c\/p\u003e\u003cp\u003eIt is also the sensible first filter for someone who is not ready to commit to a narrowband set. A dedicated O-III or H-beta filter is a far more aggressive tool and will show you a small number of targets spectacularly while making most of the sky unusable. The CLS is deliberately broader. You can leave it in the eyepiece and star hop, work through an evening of Messier objects, and keep enough field stars visible to know where you are.\u003c\/p\u003e\u003ch2\u003eKey Features \u0026amp; Design\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePublished wavelength range of 436nm to 536nm, covering the blue-green band where the brightest visual nebula emission occurs\u003c\/li\u003e\n\u003cli\u003ePeak transmission at 488nm, close to the O-III doublet that carries most of the visible signal in planetary and emission nebulae\u003c\/li\u003e\n\u003cli\u003ePublished transmission rate of 98.3 per cent at peak, so very little of the wanted light is given up to the coating\u003c\/li\u003e\n\u003cli\u003eStandard 1.25-inch filter thread, compatible with the great majority of 1.25-inch eyepieces and diagonals\u003c\/li\u003e\n\u003cli\u003eThreaded cell that stacks with other standard 1.25-inch filters if you want to combine effects\u003c\/li\u003e\n\u003cli\u003eBroadband rather than line-specific behaviour, so field stars remain visible and star hopping stays practical\u003c\/li\u003e\n\u003cli\u003eWorks with any focal ratio and requires no power, batteries or adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFilter Design\u003c\/h2\u003e\u003cp\u003eA light pollution reduction filter is an interference filter, not a piece of tinted glass. Alternating thin layers of material with different refractive indices are deposited on the substrate, and their thicknesses are chosen so that reflections within the stack cancel at some wavelengths and reinforce at others. The result is a transmission curve that can be shaped, in this case to pass the 436nm to 536nm region efficiently and to reject a good deal of what falls outside it. The wavelengths that mercury and older sodium street lighting throw into the sky sit largely outside that window, while the emission lines that make nebulae visible sit inside it. Because the filter subtracts rather than adds, the whole field including the target does get dimmer in absolute terms; what improves is contrast, and contrast is what the eye actually uses to detect faint extended detail. It is worth understanding that this is a physical wavelength selection, which is also why the filter cannot help with light that arrives at the same wavelengths as your target.\u003c\/p\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVisual observing of emission and planetary nebulae from suburban or town skies\u003c\/li\u003e\n\u003cli\u003eGeneral deep sky sweeping where you want a darker background without losing field stars\u003c\/li\u003e\n\u003cli\u003eOutreach and public nights under compromised lighting, where the improvement is easy for a newcomer to see\u003c\/li\u003e\n\u003cli\u003eA first light pollution filter for an observer who is not yet ready for narrowband\u003c\/li\u003e\n\u003cli\u003eReducing the visual impact of moonlight-brightened sky on brighter nebulae\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe filter uses the standard 1.25-inch filter thread found on the barrel of most 1.25-inch eyepieces, and it can equally be threaded into many 1.25-inch star diagonals and camera nosepieces. A small number of eyepieces have unusually deep or recessed barrels and can be awkward to thread by hand, and a very small number of older or specialised barrels are not threaded at all. If you are unsure whether it will thread into a particular eyepiece, contact our team in Bolton with the model and we will confirm it before you order. If you also observe with 2-inch eyepieces, note that this filter will not fit them and a 2-inch version is a separate item.\u003c\/p\u003e\u003ch2\u003eGood to Know Before You Order\u003c\/h2\u003e\u003cp\u003eExplore Scientific publishes no shipping weight for this item, so we are confirming it on our own scales before the listing goes live. That is why it is currently unpublished. Contact us and we will give you a shipping figure for your address. Beyond that, set expectations honestly on performance. A CLS filter gives its best results on emission and planetary nebulae. Galaxies, globular clusters and open clusters shine by broadband starlight, and any filter that removes part of the spectrum removes part of their light too, so the gain on those targets ranges from slight to none. The filter also cannot do anything about modern broad-spectrum white LED street lighting, which puts energy right across the visible band including inside the passband. Nothing is included beyond the filter itself in its case; eyepieces, diagonals and adapters are separate.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this make faint objects brighter?\u003c\/strong\u003e No, and no filter can. It removes unwanted light, so the whole view including the target gets slightly dimmer. What increases is the contrast between the object and the sky background, and that is what determines whether you can see faint detail at all.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for astrophotography?\u003c\/strong\u003e You can thread it into a 1.25-inch camera nosepiece and it will help under light pollution, though it is designed and specified as a visual filter. Imagers working seriously under light pollution usually move to narrowband filters matched to their sensor and optical train.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work on galaxies?\u003c\/strong\u003e Only marginally. Galaxy light is broadband continuum, so it is attenuated along with the sky glow. The honest answer is that this filter earns its place on nebulae.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it fit my 2-inch eyepieces?\u003c\/strong\u003e No. This is the 1.25-inch version and threads only into 1.25-inch barrels. Ask us about the 2-inch size if that is what your eyepieces use.\u003c\/p\u003e\u003ch2\u003eBottom Line\u003c\/h2\u003e\u003cp\u003eIf your observing site is bright and your nebula views are washed out, a broadband light pollution filter is the least expensive change that will visibly help. The CLS is an easy filter to live with because it is gentle enough to leave in place all evening. Contact our team in Bolton if you would like help deciding between this and a narrowband filter for your sky and your telescope.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":53958533185647,"sku":"310225","price":117.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/0310225_PAC.jpg?v=1785960458"},{"product_id":"explore-scientific-77mm-slim-dark-sky-filter-for-camera-lenses","title":"Explore Scientific 77mm Slim Dark Sky Filter for Camera Lenses with 4mm Low Profile Mount","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Explore Scientific Dark Sky Filter, item 310260, is a 77mm screw-in filter made for camera lenses rather than telescopes. Explore Scientific describes it as a universally applicable dark sky filter for photo lenses, particularly suited to increasing contrast in aurora and deep-sky photography. The substrate is a special optical glass containing neodymium oxide, which absorbs strongly in a narrow band centred on the 590nm sodium line while passing 550nm green and 630nm red at over 90 per cent. The frame is black anodised aluminium with a construction height of just 4mm, a slim profile chosen specifically so the filter does not vignette on wide-angle lenses.\u003c\/p\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis is for the photographer shooting nightscapes, aurora and wide-field Milky Way frames from anywhere within reach of town lighting. The problem it addresses is specific and quite different from what a telescope filter deals with. A camera sensor records colour through red, green and blue channels, and the yellow of sodium vapour street lighting and greenhouse lighting lands across both the red and the green channels at once. Once that has happened, the skyglow is entangled with exactly the colours you are trying to record, the red of hydrogen emission and the green of aurora, and no amount of work in post-processing separates them cleanly. Blocking the sodium line at the point of capture keeps the channels distinct so the red and green in your image mean something.\u003c\/p\u003e\u003cp\u003eIt is also the practical answer for anyone who does not want to modify their camera. Clip-in interference filters that sit between lens and camera body mean disassembly, careful handling near the sensor, and a filter that only fits one body. This one threads onto the front of the lens like any other 77mm filter, goes on and off in seconds, and moves between bodies freely, which makes it realistic for time-lapse work and for travel where you are shooting on the move.\u003c\/p\u003e\u003ch2\u003eKey Features \u0026amp; Design\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBlocks the 590nm yellow sodium line, suppressing sodium vapour street lighting and greenhouse lighting\u003c\/li\u003e\n\u003cli\u003eTransmits over 90 per cent at 550nm green and 630nm red, the bands that carry aurora and hydrogen emission signal\u003c\/li\u003e\n\u003cli\u003eSlim 4mm construction height, chosen to avoid vignetting on wide-angle lenses\u003c\/li\u003e\n\u003cli\u003eStandard 77mm filter thread, so it fits directly on the front of a 77mm lens with no camera modification\u003c\/li\u003e\n\u003cli\u003eSpecial optical glass with neodymium oxide, an absorption glass rather than an interference coating\u003c\/li\u003e\n\u003cli\u003eBlack anodised aluminium frame, which resists handling wear and limits internal reflection off the ring\u003c\/li\u003e\n\u003cli\u003eNatural night sky colour reproduction, with the correction confined to a narrow band rather than a broad cast\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFilter Design\u003c\/h2\u003e\u003cp\u003eThe important engineering decision here is absorption rather than interference. An interference filter builds its passband from stacked thin-film layers, and the wavelength at which those layers cancel depends on the angle at which the light crosses them. Light entering the corner of a fast wide-angle lens arrives at a very different angle from light down the centre, so an interference filter mounted in front of such a lens shifts its passband across the frame and produces uneven colour. Neodymium oxide glass works differently. The neodymium ion has an absorption band that sits over the yellow region near 590nm, and because that absorption is a property of the material itself rather than of a layer structure, it behaves the same regardless of the angle of incidence. That is what makes the filter usable in front of a 14mm or 24mm lens where an interference filter would not be. The 4mm frame height serves the same goal from the mechanical side: a standard filter ring intrudes into the field of a very wide lens and darkens the corners, so the mount is cut down to keep clear of it.\u003c\/p\u003e\u003ch2\u003eRecommended Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAurora photography, where separating green and red emission from yellow skyglow is the whole battle\u003c\/li\u003e\n\u003cli\u003eWide-field Milky Way and nightscape work from suburban or semi-rural sites\u003c\/li\u003e\n\u003cli\u003eNight sky time-lapse sequences, where a screw-in filter can stay on the lens for hours unattended\u003c\/li\u003e\n\u003cli\u003eWide-field imaging of emission nebulae with a camera lens on a star tracker\u003c\/li\u003e\n\u003cli\u003eGeneral night photography where sodium lighting is casting an orange wash over the scene\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Accessory Notes\u003c\/h2\u003e\u003cp\u003eThe filter fits any lens with a 77mm front filter thread directly. Lenses with smaller threads can use it with an inexpensive step-up ring, though on the widest lenses a step-up ring reintroduces the very intrusion into the field that the slim mount was designed to avoid, so test for vignetting at your widest focal length and largest aperture before you rely on it. Some ultra-wide and fisheye lenses have bulbous front elements with no filter thread at all and cannot take a front filter of any kind. Slim frames also vary in whether they carry a front thread for stacking or for a lens cap, so if you need to keep a cap or hood on top, contact our team in Bolton and we will confirm what this frame will accept before you order. It works with any camera body, mirrorless or DSLR, modified or unmodified.\u003c\/p\u003e\u003ch2\u003eGood to Know Before You Order\u003c\/h2\u003e\u003cp\u003eExplore Scientific publishes no shipping weight for this item, so we are confirming it on our own scales before the listing goes live. That is why it is currently unpublished. Contact us and we will give you a shipping figure for your address. On performance, be realistic about what a sodium-line filter can and cannot do. It is aimed at one specific pollutant. Broad-spectrum white LED street lighting, which now dominates in many municipalities, emits right across the visible band and cannot be notched out this way, so under LED-lit skies the improvement is modest. Under older sodium lighting it is substantial. The filter also removes some light, which means slightly longer exposures, and like any front-mounted glass it can produce ghosting if a bright lamp is in or just outside the frame. Custom white balance is worth setting with the filter fitted. The filter is supplied on its own; step-up rings, caps and hoods are separate.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill it vignette on my wide-angle lens?\u003c\/strong\u003e The 4mm slim frame is designed specifically to avoid that, and it is the reason to choose this filter over a standard-height one. On extremely wide lenses, and particularly if you add a step-up ring, test a frame at your widest setting to be sure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need a modified camera?\u003c\/strong\u003e No. It threads onto the front of the lens and works with any standard camera body, which is the main practical advantage over clip-in filters that sit in front of the sensor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it help under white LED street lights?\u003c\/strong\u003e Only a little. Neodymium glass targets the yellow sodium line near 590nm. LED lighting is broadband and there is no narrow band to remove, so the honest answer is that this filter is at its best where sodium lighting still dominates.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it on a telescope?\u003c\/strong\u003e Not directly. It is built around a 77mm photographic thread for camera lenses. For telescope work, ask us about the light pollution filters made in 1.25-inch and 2-inch astronomical cells.\u003c\/p\u003e\u003ch2\u003eBottom Line\u003c\/h2\u003e\u003cp\u003eIf you photograph aurora or wide-field night skies near sodium-lit towns, this filter fixes a problem at capture that is genuinely difficult to fix afterwards, and the slim mount means you can use it on the wide lenses that matter most for that work. It is a simple screw-in accessory with no camera modification involved. Contact our team in Bolton if you would like help matching it to your lens set or choosing step-up rings.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":53958629032047,"sku":"310260","price":186.95,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/310260_1.jpg?v=1785960691"}],"url":"https:\/\/ontariotelescope.com\/collections\/light-pollution-filters.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}