{"title":"Optolong Narrowband Filters","description":"\u003cp\u003eOptolong narrowband filters. Part of \u003ca href=\"\/collections\/optolong\"\u003eOptolong\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"sho-1-25-narrowband-filter-kit","title":"SHO 1.25\" Narrowband Filter Kit","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt;\"\u003eSHO in OPTOLONG SHO FILTER KIT stands for SII, H-Alpha, OIII narrow-band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel . Corresponding with RGB channel (Ha, OIII, SII), photographers can process Hubble images by astronomical post processing software. The OPTOLONG SHO FILTER KIT contains one H-ALPHA 7NM, one SII 6.5NM and one OIII 6.5NM filter.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe OPTOLONG 7NM H-ALPHA FILTER is the most popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe narrowband OPTOLONG 6.5NM OIII FILTER is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt;\"\u003eThe Optolong Sulfur-II 6.5nm Extra-Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Lato, sans-serif; font-size: 10pt;\"\u003eAll of the Optolong Filters  blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula). Narrowband imaging with SHO set (H-alpha, OIII-CCD and SII-CCD) can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks. H-alpha filter is the first narrowband addition to LRGB set for most imagers who blend a black-and-white Ha image into RGB data to enhance structural detail while maintaining natural look.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eNarrowband 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\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\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","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013542309999,"sku":"O-SHO-1","price":679.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/125_252520SHO__83393.1682640428.1280.1280.jpg?v=1766555826"},{"product_id":"sho-2-narrowband-filter-kit","title":"SHO 2\" Narrowband Filter Kit","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt;\"\u003eSHO in OPTOLONG SHO FILTER KIT stands for SII, H-Alpha, OIII narrow-band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel . Corresponding with RGB channel (Ha, OIII, SII), photographers can process Hubble images by astronomical post processing software. The OPTOLONG SHO FILTER KIT contains one H-ALPHA 7NM, one SII 6.5NM and one OIII 6.5NM filter.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe OPTOLONG 7NM H-ALPHA FILTER is the most popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe narrowband OPTOLONG 6.5NM OIII FILTER is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt;\"\u003eThe Optolong Sulfur-II 6.5nm Extra-Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Lato, sans-serif; font-size: 10pt;\"\u003eAll of the Optolong Filters  blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula). Narrowband imaging with SHO set (H-alpha, OIII-CCD and SII-CCD) can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks. H-alpha filter is the first narrowband addition to LRGB set for most imagers who blend a black-and-white Ha image into RGB data to enhance structural detail while maintaining natural look.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eNarrowband 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\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\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","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013542539375,"sku":"O-SHO-2","price":989.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/2_inch_filter_set_with_h-alpha_sii_and_oiii_filteres__16429.jpg?v=1766555832"},{"product_id":"sho-36mm-narrowband-filter-kit","title":"SHO 36mm\" Narrowband Filter Kit","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt;\"\u003eSHO in OPTOLONG SHO FILTER KIT stands for SII, H-Alpha, OIII narrow-band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel . Corresponding with RGB channel (Ha, OIII, SII), photographers can process Hubble images by astronomical post processing software. The OPTOLONG SHO FILTER KIT contains one H-ALPHA 7NM, one SII 6.5NM and one OIII 6.5NM filter.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe OPTOLONG 7NM H-ALPHA FILTER is the most popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe narrowband OPTOLONG 6.5NM OIII FILTER is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial; font-size: 10pt;\"\u003eThe Optolong Sulfur-II 6.5nm Extra-Narrowband Filter transmits a 6.5nm bandwidth of light that is centered at 672nm and drastically reduces other transmissions, including wavelengths of light that are responsible for light pollution (both artificial and natural). \u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Lato, sans-serif; font-size: 10pt;\"\u003eAll of the Optolong Filters  blocks infrared wavelengths from 700nm to 1100nm so you don't need a separate IR-Cut filter.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula). Narrowband imaging with SHO set (H-alpha, OIII-CCD and SII-CCD) can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks. H-alpha filter is the first narrowband addition to LRGB set for most imagers who blend a black-and-white Ha image into RGB data to enhance structural detail while maintaining natural look.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\u003eNarrowband 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\u003cp style=\"box-sizing: border-box; margin: 0px 0px 10px; line-height: 1.6em; font-size: 13px; background-color: rgb(255, 255, 255); outline: none 0px !important;\"\u003e\u003cspan style=\"font-family: Arial;\"\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","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013542637679,"sku":"O-SHO-36","price":809.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/unmounted_filter_set_with_h-alpha_sii_and_oiii_filters__05831.jpg?v=1766555837"},{"product_id":"optolong-sii-6-5nm-2-filter","title":"Optolong SII 6.5nm 2\" filter","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eThe SII-CCD 6.5 nm Deep Sky Imaging Filter:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eThis filter \u003c\/span\u003eis an e\u003cspan style=\"box-sizing: border-box;\"\u003extra narrowband SII-CCD 6.5 nm filter (Sulfur II for CCD) is designed for nebula observation allowing 6.5 nm bandwidth of light centered on a wavelength of 672 nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow).\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"box-sizing: border-box; margin: 4px 0px 5px 30px; list-style-position: outside; list-style-image: initial; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eUse with H-alpha and OIII-CCD extra narrowband filters (SHO Set) for tricolor CCD astrophotography\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eNarrowband imaging with SHO set can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eNarrowband 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\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013632487535,"sku":"O-SII-2","price":329.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong-Sulfur-II-Narrowband-Telescope-Filter_2__47046.jpg?v=1766558089"},{"product_id":"optolong-oiii-6-5nm-2-filter","title":"Optolong OIII 6.5nm 2\" Filter","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eOIII-CCD 6.5 nm Deep Sky Imaging Filter:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eThis filter is an extra Narrowband OIII-CCD 6.5 nm filter. It is designed for nebula observation allowing 6.5 nm bandwidth of light centered on a wavelength of 500 nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow).\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eOIII emits 495.9 nm and 500.7 nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003eMain Use and Performance\u003c\/p\u003e\u003cul style=\"box-sizing: border-box; margin: 4px 0px 5px 30px; list-style-position: outside; list-style-image: initial; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eSuitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013632520303,"sku":"O-OIII-2","price":329.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong-Oxygen-III-Narrowband-Telescope-Filter_2000x__61873.jpg?v=1766558094"},{"product_id":"optolong-oiii-6-5nm-1-25-filter","title":"Optolong OIII 6.5nm 1.25\" Filter","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eOIII-CCD 6.5 nm Deep Sky Imaging Filter:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eThis filter is an extra Narrowband OIII-CCD 6.5 nm filter. It is designed for nebula observation allowing 6.5 nm bandwidth of light centered on a wavelength of 500 nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow).\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eOIII emits 495.9 nm and 500.7 nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003eMain Use and Performance\u003c\/p\u003e\u003cul style=\"box-sizing: border-box; margin: 4px 0px 5px 30px; list-style-position: outside; list-style-image: initial; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eSuitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013632651375,"sku":"O-OIII-1","price":229.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong-Oxygen-III-Narrowband-Telescope-Filter_2000x__20500.jpg?v=1766558099"},{"product_id":"optolong-oiii-6-5nm-36mm-filter","title":"Optolong OIII 6.5nm 36mm filter","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eOIII-CCD 6.5 nm Deep Sky Imaging Filter:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eThis filter is an extra Narrowband OIII-CCD 6.5 nm filter. It is designed for nebula observation allowing 6.5 nm bandwidth of light centered on a wavelength of 500 nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow).\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eOIII emits 495.9 nm and 500.7 nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image.\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003eMain Use and Performance\u003c\/p\u003e\u003cul style=\"box-sizing: border-box; margin: 4px 0px 5px 30px; list-style-position: outside; list-style-image: initial; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eSuitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013634257007,"sku":"O-OIII-36","price":269.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/oiii_36u_2__51982.jpg?v=1766558105"},{"product_id":"optolong-sii-6-5nm-1-25-filter","title":"Optolong SII 6.5nm 1.25\" filter","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eThe SII-CCD 6.5 nm Deep Sky Imaging Filter:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eThis filter \u003c\/span\u003eis an e\u003cspan style=\"box-sizing: border-box;\"\u003extra narrowband SII-CCD 6.5 nm filter (Sulfur II for CCD) is designed for nebula observation allowing 6.5 nm bandwidth of light centered on a wavelength of 672 nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow).\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"box-sizing: border-box; margin: 4px 0px 5px 30px; list-style-position: outside; list-style-image: initial; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eUse with H-alpha and OIII-CCD extra narrowband filters (SHO Set) for tricolor CCD astrophotography\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eNarrowband imaging with SHO set can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eNarrowband 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\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013634289775,"sku":"O-SII-1","price":229.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong-Sulfur-II-Narrowband-Telescope-Filter_2__54156.jpg?v=1766558109"},{"product_id":"optolong-sii-6-5nm-36mm-filter","title":"Optolong SII 6.5nm 36mm Filter","description":"\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eThe SII-CCD 6.5 nm Deep Sky Imaging Filter:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eThis filter \u003c\/span\u003eis an e\u003cspan style=\"box-sizing: border-box;\"\u003extra narrowband SII-CCD 6.5 nm filter (Sulfur II for CCD) is designed for nebula observation allowing 6.5 nm bandwidth of light centered on a wavelength of 672 nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow).\u003c\/span\u003e\u003c\/p\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 15px; line-height: 1.6em; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003e\u003cstrong style=\"box-sizing: border-box;\"\u003eMain Use and Performance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul style=\"box-sizing: border-box; margin: 4px 0px 5px 30px; list-style-position: outside; list-style-image: initial; color: rgb(15, 32, 59); font-family: Poppins, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eUse with H-alpha and OIII-CCD extra narrowband filters (SHO Set) for tricolor CCD astrophotography\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eNarrowband imaging with SHO set can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eHubble look of images can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 6px; width: 870px;\"\u003e\u003cspan style=\"box-sizing: border-box;\"\u003eNarrowband 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\/li\u003e\n\u003c\/ul\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013634420847,"sku":"O-SII-36","price":269.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/sii_36u__52005.jpg?v=1766558115"},{"product_id":"optolong-1-25-h-alpha-7nm-filter","title":"OPTOLONG 1.25\" H-ALPHA 7nm FILTER","description":"\u003cul style=\"box-sizing: border-box; margin: 0px 0px 20px 15px; list-style-position: outside; list-style-image: initial; padding: 0px; font-family: Interstate-Light, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003eH-alpha 7nm 1.25\" Filter\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003eA very narrow emission-line filter\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003ePermits a 7nm bandwidth of light (focused on the 656nm wavelength) through\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 0px;\"\u003eBlocks transmission of contrast-killing light pollution wavelengths\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 40px; font-family: Interstate-Light, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/p\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013634551919,"sku":"O-HA-1","price":229.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong_2_H-Alpha_7nm_Filter_grande__97416.jpg?v=1766558121"},{"product_id":"optolong-2-h-alpha-7nm-filter","title":"OPTOLONG 2\" H-ALPHA 7nm FILTER","description":"\u003cul style=\"box-sizing: border-box; margin: 0px 0px 20px 15px; list-style-position: outside; list-style-image: initial; padding: 0px; font-family: Interstate-Light, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003eH-alpha 7nm 2\" Filter\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003eA very narrow emission-line filter\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003ePermits a 7nm bandwidth of light (focused on the 656nm wavelength) through\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 0px;\"\u003eBlocks transmission of contrast-killing light pollution wavelengths\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 40px; font-family: Interstate-Light, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/p\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013634584687,"sku":"O-HA-2","price":329.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong_2_H-Alpha_7nm_Filter_grande__93602.jpg?v=1766558126"},{"product_id":"optolong-36mm-h-alpha-7nm-filter","title":"OPTOLONG 36mm\" H-ALPHA 7nm FILTER","description":"\u003cul style=\"box-sizing: border-box; margin: 0px 0px 20px 15px; list-style-position: outside; list-style-image: initial; padding: 0px; font-family: Interstate-Light, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003eH-alpha 7nm 2\" Filter\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003eA very narrow emission-line filter\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 5px;\"\u003ePermits a 7nm bandwidth of light (focused on the 656nm wavelength) through\u003c\/li\u003e\n\u003cli style=\"box-sizing: border-box; margin-bottom: 0px;\"\u003eBlocks transmission of contrast-killing light pollution wavelengths\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"box-sizing: border-box; margin: 0px 0px 40px; font-family: Interstate-Light, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);\"\u003e \u003c\/p\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013634715759,"sku":"O-HA-36","price":269.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ha_7nm_filter_1__21063.jpg?v=1766558131"},{"product_id":"optolong-sho-3nm-narrowband-filters-kit-36mm","title":"Optolong SHO-3nm narrowband filters kit 36mm","description":"\u003cspan style=\"font-family: \" microsoft yahei rgb font-size:=\"\" background-color:=\"\"\u003eOptolong SHO-3nm filter kit includes SII3nm, H-Alpha3nm, and OIII3nm narrow band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software. \u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cstrong style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-size: 18px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eOptolong SHO-3nm Narrowband Filters Introduction\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eOptolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm, and OIII 3nm narrow band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eExtra narrowband SIICCD3nm filter  (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light  centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eH-Alpha 3nm filter is the popular narrowband filter allowing 3nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure vapor lights and unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e.skyglow). Better choice of narrowband H-Alpha astrophotography filter for highest contrast and revealing subtle nebula details. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eExtra narrowband OIII-CCD 3nm filter is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission line, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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.skyglow).\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eOIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernoval remnants are taken only with H-Alpha and OIIII filters. They show great structural details, but have natural colors, looking like an RGB image.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cstrong style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eFeatures:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eGive you higher contrast and greater detailed viewing;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eDecrease background noise and improve the contrast of objects;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eIncrease the faint nebula signal and make it to be brightness;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eWith narrow band filters kit, you are able to process a Hubble image;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eThrough the optimization of the substrate and upgrading of coating technology.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cstrong style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-size: 18px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eReference Spectrum\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb text-align: center\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/56095a94c3cebfd0ebdc80f423d27c58_5c02a12e-f3f7-4b80-b5e0-d2f86e183d9a.png?v=1766561315\" style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; border: none; vertical-align: middle; max-width: 100%; height: 462px; width: 1000px;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb text-align: center\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e?This curve is only for reference, and is not used as the final product data.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003eHow to read the chart?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e?The horizontal axis is the Wavelength in Nanometers(nm).\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e?The vertical axis is transmission in %.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e?The BLUE line shows the transmission of OIII3nm.The H-Alpha 3nm line is shown in GREEN. And the SII 3nm filter line is shown in RED. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013739343983,"sku":"O-SHO-3-36","price":1369.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Optolong-sho-filter-kit-36-3nm-produkt__29193.jpg?v=1766561317"},{"product_id":"optolong-sho-3nm-narrowband-filters-kit-2","title":"Optolong SHO-3nm narrowband filters kit 2\"","description":"\u003cspan style=\"font-family: \" microsoft yahei rgb font-size:=\"\" background-color:=\"\"\u003eOptolong SHO-3nm filter kit includes SII3nm, H-Alpha3nm, and OIII3nm narrow band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software. \u003c\/span\u003e\u003cdiv\u003e\u003cspan style=\"font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cstrong style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-size: 18px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eOptolong SHO-3nm Narrowband Filters Introduction\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eOptolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm, and OIII 3nm narrow band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel. Corresponding with RGB channel (HA, OIII, SII), photographers can process Hubble images by astronomical post processing software. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eExtra narrowband SIICCD3nm filter  (Sulfur II for CCD) is designed for nebula observation allowing 3nm bandwidth of light  centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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. skyglow)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eH-Alpha 3nm filter is the popular narrowband filter allowing 3nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure vapor lights and unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e.skyglow). Better choice of narrowband H-Alpha astrophotography filter for highest contrast and revealing subtle nebula details. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eExtra narrowband OIII-CCD 3nm filter is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission line, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including 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.skyglow).\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eOIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernoval remnants are taken only with H-Alpha and OIIII filters. They show great structural details, but have natural colors, looking like an RGB image.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cstrong style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eFeatures:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eGive you higher contrast and greater detailed viewing;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eDecrease background noise and improve the contrast of objects;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eIncrease the faint nebula signal and make it to be brightness;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eWith narrow band filters kit, you are able to process a Hubble image;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eThrough the optimization of the substrate and upgrading of coating technology.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cstrong style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-size: 18px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003eReference Spectrum\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb text-align: center\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/56095a94c3cebfd0ebdc80f423d27c58_802f74d5-c34b-498b-ba29-2c995e7f60fd.png?v=1766561323\" style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; border: none; vertical-align: middle; max-width: 100%; height: 462px; width: 1000px;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb text-align: center\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e?This curve is only for reference, and is not used as the final product data.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e \u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e\u003cstrong style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003eHow to read the chart?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e?The horizontal axis is the Wavelength in Nanometers(nm).\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e?The vertical axis is transmission in %.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: \" microsoft yahei font-size: background-color: rgb\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px;\"\u003e\u003cspan style=\"overflow-wrap: break-word; margin: 0px; padding: 0px; font-family: Arial, Helvetica, sans-serif;\"\u003e?The BLUE line shows the transmission of OIII3nm.The H-Alpha 3nm line is shown in GREEN. And the SII 3nm filter line is shown in RED. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44013739475055,"sku":"O-SHO-3-2","price":1669.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/SHO_2525203nm__34310.1682640975.1280.1280.png?v=1766561325"},{"product_id":"optolong-night-sky-h-alpha-filter","title":"Optolong Night Sky H-Alpha filter","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eOptolong Night Sky H-Alpha Introduction\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNight Sky H-Alpha filter (IR Pass 650nm) with 50% transition from blocking to passing at about 640nm and 95% or above transmission at wavelengths longer than 650nm can be used in IR-LRGB imaging to produce a sharper luminance image for the best planetary contrast as atmospheric seeing and distortion is much reduced at longer IR wavelengths.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMain Use\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe sensor of CCD or CMOS cameras is capable of detecting light in the 350-1100nm range including infrared wavelengths. Thus RGB planetary images taken with IR as the luminance channel have visible-enhanced contrast and surface detail than standard LRGB images.\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\u003cspan\u003e\u003cstrong\u003eOptolong \u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eNight Sky H-Alpha\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e Spectrum and Characteristic\u003c\/strong\u003e\u003cbr\u003eSbustrate: Optical glass\u003cbr\u003eThickness: 1.85mm\u003cbr\u003eTave:  T\u0026gt;90%\u003cbr\u003eBlocking range: 300-570nm\u003cbr\u003eSurface quality: 60\/40\u003cbr\u003eTransmitted Wavefront RMS: λ\/4\u003cbr\u003eParallelism: 30s\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/afe8c3f4e4eb968ef68dd5839b667b29_1a9b17f8-620a-4047-be2d-e6f582975e46.png?v=1766572968\" alt=\"\"\u003e\u003c\/span\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\u003eThe horizontal axis is the Wavelength in Nanometers(nm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe vertical axis is transmission in %.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003eRED\u003c\/strong\u003e line shows the transmission of the \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eNight Sky H-Alpha\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e filter.\u003c\/span\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 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","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44014146781295,"sku":"O-Ha-NS-1","price":110.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/3d46da1c9e20c7176d9f19420034d9b3__40980.jpg?v=1766572970"},{"product_id":"optolong-night-sky-h-alpha-filter-2","title":"Optolong Night Sky H-Alpha filter 2\"","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eOptolong Night Sky H-Alpha Introduction\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNight Sky H-Alpha filter (IR Pass 650nm) with 50% transition from blocking to passing at about 640nm and 95% or above transmission at wavelengths longer than 650nm can be used in IR-LRGB imaging to produce a sharper luminance image for the best planetary contrast as atmospheric seeing and distortion is much reduced at longer IR wavelengths.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMain Use\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe sensor of CCD or CMOS cameras is capable of detecting light in the 350-1100nm range including infrared wavelengths. Thus RGB planetary images taken with IR as the luminance channel have visible-enhanced contrast and surface detail than standard LRGB images.\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\u003cspan\u003e\u003cstrong\u003eOptolong \u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eNight Sky H-Alpha\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e Spectrum and Characteristic\u003c\/strong\u003e\u003cbr\u003eSbustrate: Optical glass\u003cbr\u003eThickness: 1.85mm\u003cbr\u003eTave:  T\u0026gt;90%\u003cbr\u003eBlocking range: 300-570nm\u003cbr\u003eSurface quality: 60\/40\u003cbr\u003eTransmitted Wavefront RMS: λ\/4\u003cbr\u003eParallelism: 30s\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/afe8c3f4e4eb968ef68dd5839b667b29_4da6abeb-6d7e-4490-93a7-886226364cad.png?v=1766572977\" alt=\"\"\u003e\u003c\/span\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\u003eThe horizontal axis is the Wavelength in Nanometers(nm).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe vertical axis is transmission in %.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003eRED\u003c\/strong\u003e line shows the transmission of the \u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eNight Sky H-Alpha\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e filter.\u003c\/span\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 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","brand":"Optolong Filters","offers":[{"title":"Default Title","offer_id":44014147141743,"sku":"O-Ha-NS-2","price":165.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/3d46da1c9e20c7176d9f19420034d9b3__40980.1763489464.1280.1280__31623.jpg?v=1766572979"}],"url":"https:\/\/ontariotelescope.com\/collections\/optolong-narrowband.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}