{"title":"Optolong","description":"Optolong Optics was started in 1999 specializing in astronomy filters, producing quality imaging and observing filters.","products":[{"product_id":"optolong-l-pro-1-25-light-pollution-filter","title":"Optolong L-Pro 1.25\" Light Pollution Filter","description":"The Optolong 1.25\" L-Pro light pollution filter is a great way to suppress the issues caused by all these lights that are all around us. This mounted filter can be used visually or photographically.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us observe, or photograph, the night sky.  The L-Pro 1.25\" can help us reach out a little bit farther and see a little bit more of what keeps us looking up.\u003c\/p\u003e\n\u003cp\u003eThe L-Pro 1.25\" helps us by reducing the transmission of specific wavelengths of light pollutants.  Throw in the main nebula emission lines at OIII (496nm and 500nm), H-Beta (486nm), NII (654nm), H-alpha (656nm), and finally SII (672nm) and you have a filter that will enhance the contrast both visually and photographically of those every impressive stellar objects.\u003c\/p\u003e\n\u003cp\u003eSo the trick is that the filter won't eliminate the effects of the light pollution, or make the object brighter.  In most cases it will increase the contrast between the nebula and the night sky.  The filter works very well with galaxies, reflection nebula, and globular star clusters.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing with a clear aperture of 26mm.  The L-Pro comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993097289,"sku":"OPTOLPRO1","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/48407406_958495691006845_1495806675334987776_n.png?v=1675380143"},{"product_id":"optolong-l-pro-2-light-pollution-filter","title":"Optolong L-Pro 2\" Light Pollution Filter","description":"The Optolong 2\" L-Pro light pollution filter is a great way to suppress the issues caused by all these lights that are all around us. This mounted filter can be used visually or photographically.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us observe, or photograph, the night sky.  The L-Pro 2\" filter can help us reach out a little bit farther and see a little bit more of what keeps us looking up.\u003c\/p\u003e\n\u003cp\u003eThe L-Pro 2\" helps us by reducing the transmission of specific wavelengths of light pollutants.  Throw in the main nebula emission lines at OIII (496nm and 500nm), H-Beta (486nm), NII (654nm), H-alpha (656nm), and finally SII (672nm) and you have a filter that will enhance the contrast both visually and photographically of those every impressive stellar objects.\u003c\/p\u003e\n\u003cp\u003eSo the trick is that the filter won't eliminate the effects of the light pollution, or make the object brighter.  In most cases it will increase the contrast between the nebula and the night sky.  The filter works very well with galaxies, reflection nebula, and globular star clusters.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing with a clear aperture of 45mm.  The L-Pro comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993130057,"sku":"OPTOLPRO2","price":199.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/48407406_958495691006845_1495806675334987776_n_1.png?v=1675380145"},{"product_id":"optolong-l-enhance-2-light-pollution-tri-band-imaging-filter","title":"Optolong L-Enhance 2\" Light Pollution Tri-Band Imaging Filter","description":"Take back the night sky by using the Optolong L-eNhance 2\" Tri-band filter when imaging. A convenient and economic way to eNhance your nightly passion.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters.  In the past it has been an expensive proposition to purchase separate filters and filter wheels.  The Optolong L-eNhance filter is doing its best to make it  a much more simple process to improve your photography.  \u003c\/p\u003e\n\u003cp\u003eThe L-eNhance 2\" helps us by isolating specific emission lines.  It effectively isolates nebula emission lines at OIII, H-Beta , and H-alpha while achieving a maximum transmission of up to 90%.  This Tri-Band filter has been designed to work with DSLR, Color CMOS, and monochrome CCD Cameras\u003c\/p\u003e\n\u003cp\u003eTheir design is quite ingenious.  It keeps the prominent RGB colors of nebula while blocking out most wavelengths of light pollution.  The color curve chart in the images will show you everything you should need.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The L-eNhance comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993162825,"sku":"OPTOLEN2","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/58377139_1030507673805646_5432258057407037440_n.jpg?v=1675380147"},{"product_id":"optolong-l-enhance-1-25-light-pollution-tri-band-imaging-filter","title":"Optolong L-Enhance 1.25\" Light Pollution Tri-Band Imaging Filter","description":"Take back the night sky by using the Optolong L-eNhance 1.25\" Tri-Band filter when imaging. A convenient and economic way to eNhance your nightly passion.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us  photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters.  In the past it has been an expensive proposition to purchase separate filters and filter wheels.  The Optolong L-eNhance filter is doing its best to make it  a much more simple process to improve your photography.  \u003c\/p\u003e\n\u003cp\u003eThe L-eNhance 1.25\" helps us by isolating specific emission lines.  It effectively isolates nebula emission lines at OIII, H-Beta , and H-alpha while achieving a maximum transmission of up to 90%.  This tri-band pass filter has been designed to work with DSLR, Color CMOS, and monochrome CCD Cameras\u003c\/p\u003e\n\u003cp\u003eTheir design is quite ingenious.  It keeps the prominent RGB colors of nebula while blocking out most wavelengths of light pollution.  The color curve chart in the images will show you everything you should need.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The L-eNhance comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993195593,"sku":"OPTOLEN1","price":179.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/58441170_1030507643805649_1435271550839291904_n.jpg?v=1675380150"},{"product_id":"optolong-l-extreme-2-light-pollution-dual-passband-imaging-filter-7nm-ha-oiii","title":"Optolong L-Extreme 2\" Light Pollution Dual Passband Imaging Filter 7Nm Ha\/Oiii","description":"\u003cp\u003eTake back the night sky by using the Optolong L-eXtreme 2\" Dual Passband filter when imaging. Take your backyard imaging to places you never thought possible.\u003c\/p\u003e\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters.  In the past it has been an expensive proposition to purchase separate filters and filter wheels.  The Optolong L-eXtreme filter will help your imaging tremendously, especially if you have to capture from a light polluted area.  \u003c\/p\u003e\n\u003cp\u003eThe L-eXtreme 2\" builds on the foundation of the past offereing from Optolong and helps our imaging by isolating specific emission lines.  Unlike the L-eNhance filter, the L-eXtreme works on two emission lines while blocking out the H-beta portion.  The filter instead concentrates the 7nm passband on the H-alpha at 656nm and OIII at 501nm, which is generally the area that nebulas have their strongest emission.  You will also find that the filter is extremely good at blocking out moonlight as well as general light pollution.  This dual-band pass filter has been designed to work with DSLR, Color CMOS, and monochrome CCD Cameras\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The L-eXtreme comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993293897,"sku":"OPTOLEX2","price":309.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/ol-l-extreme_dsc_1815_2000x_3339f8cc-16bd-4c83-8ab2-fafc1c8dc24a.jpg?v=1675380152"},{"product_id":"optolong-l-extreme-1-25-light-pollution-dual-passband-imaging-filter-7nm-ha-oiii","title":"Optolong L-Extreme 1.25\" Light Pollution Dual Passband Imaging Filter 7Nm Ha\/Oiii","description":"\u003cp\u003eTake back the night sky by using the Optolong L-eXtreme 1.25\" Dual Passband filter when imaging. Take your backyard imaging to places you never thought possible.\u003c\/p\u003e\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters.  In the past it has been an expensive proposition to purchase separate filters and filter wheels.  The Optolong L-eXtreme filter will help your imaging tremendously, especially if you have to capture from a light polluted area.  \u003c\/p\u003e\n\u003cp\u003eThe L-eXtreme 1.25\" builds on the foundation of the past offering from Optolong and helps our imaging by isolating specific emission lines.  Unlike the L-eNhance filter, the L-eXtreme works on two emission lines while blocking out the H-beta portion.  The filter instead concentrates the 7nm passband on the H-alpha at 656nm and OIII at 501nm, which is generally the area that nebulas have their strongest emission.  You will also find that the filter is extremely good at blocking out moonlight as well as general light pollution.  This dual-band pass filter has been designed to work with DSLR, Color CMOS, and monochrome CCD Cameras\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The L-eXtreme comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993326665,"sku":"OPTOLEX1","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/dual-band-filter-from-optolong-no-case-l-extreme.jpg?v=1675380154"},{"product_id":"optolong-oxygen-oiii-6-5nm-1-25-filter","title":"Optolong Oxygen OIII 6.5nm 1.25\" Filter","description":"Take your imaging up a notch with the improved OIII filter from Optolong.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us  photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters. Some of you will have cameras that require separate filters that you can use in a drawer or filter wheel.  This particular Optolong Oxygen III filter is mounted in an ultra-thin cnc machined 1.25\" threaded body.\u003c\/p\u003e\n\u003cp\u003eThe improved Narrowband OIII 6.5nm filter allows a 6.5nm bandwidth of light centered on a wavelength of 500nm 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.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOIII emits 495.9nm and 500.7nm 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.  As is customary for all Optolong filters that are designed for imaging, this filter blocks infrared wavelengths from 700nm to 1100nm so there is no need for a stand alone IR-Cut filter.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993359433,"sku":"OPTOO1","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/oiii_6.5_filter_1.jpg?v=1675380157"},{"product_id":"optolong-oxygen-oiii-6-5nm-2-filter","title":"Optolong Oxygen OIII 6.5nm 2\" Filter","description":"Take your imaging up a notch with the improved OIII filter from Optolong.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us  photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters. Some of you will have cameras that require separate filters that you can use in a drawer or filter wheel.  This particular Optolong Oxygen III filter is mounted in an ultra-thin cnc machined 2\" threaded body.\u003c\/p\u003e\n\u003cp\u003eThe improved Narrowband OIII 6.5nm filter allows a 6.5nm bandwidth of light centered on a wavelength of 500nm 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.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOIII emits 495.9nm and 500.7nm 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.  As is customary for all Optolong filters that are designed for imaging, this filter blocks infrared wavelengths from 700nm to 1100nm so there is no need for a stand alone IR-Cut filter.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993392201,"sku":"OPTOO2","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/oiii_6.5_filter_1_1.jpg?v=1675380159"},{"product_id":"optolong-h-alpha-7nm-2-filter","title":"Optolong H-Alpha 7nm 2\" Filter","description":"The H-Alpha 7nm from Optolong works fantastically as a photographic filter, but also works for viewing faint emission nebula.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters. Some of you will have cameras that require separate filters that you can use in a drawer or filter wheel.  This particular Optolong H-Alpha 7nm filter is mounted in an ultra-thin cnc machined 2\" threaded body.\u003c\/p\u003e\n\u003cp\u003eThe Optolong H-Alpha filter allows a 7nm bandwidth of light centered on a wavelength of 656nm through, and reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).  The H-Alpha filter is a great choice to use for astrophotography as it will help with contrast and reveal very subtle nebula details.\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe H-Alpha filter is also suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Even better, when used in conjunction with the  OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula), you can start to bring your own \"Hubble look\" images from  your backyard.  That particular combination of the three filters for imaging, SHO set (H-alpha, OIII-CCD and SII-CCD), can be very helpful when the moon up, or in heavy light pollution, so your equipment is getting used rather than gathering dust.\u003c\/p\u003e\n\u003cp\u003eThe 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.  Remember, narrowband filters do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993424969,"sku":"OPTOH2","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/72912635_1161451130711299_8176213796969250816_n.jpg?v=1675380161"},{"product_id":"optolong-h-alpha-7nm-1-25-filter","title":"Optolong H-Alpha 7nm 1.25\" Filter","description":"The H-Alpha 7nm from Optolong works fantastically as a photographic filter, but also works for viewing faint emission nebula.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters. Some of you will have cameras that require separate filters that you can use in a drawer or filter wheel.  This particular Optolong H-Alpha 7nm filter is mounted in an ultra-thin cnc machined 1.25\" threaded body.\u003c\/p\u003e\n\u003cp\u003eThe Optolong H-Alpha filter allows a 7nm bandwidth of light centered on a wavelength of 656nm through, and reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).  The H-Alpha filter is a great choice to use for astrophotography as it will help with contrast and reveal very subtle nebula details.\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe H-Alpha filter is also suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Even better, when used in conjunction with the  OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula), you can start to bring your own \"Hubble look\" images from  your backyard.  That particular combination of the three filters for imaging, SHO set (H-alpha, OIII-CCD and SII-CCD), can be very helpful when the moon up, or in heavy light pollution, so your equipment is getting used rather than gathering dust.\u003c\/p\u003e\n\u003cp\u003eThe 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.  Remember, narrowband filters do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993457737,"sku":"OPTOH1","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/73375513_1161449974044748_2694542995520225280_n.jpg?v=1675380163"},{"product_id":"optolong-sii-6-5nm-1-25-filter","title":"Optolong SII 6.5nm 1.25\" Filter","description":"The SII 6.5nm from Optolong works fantastically as a photographic filter, but also works for viewing faint nebula.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters. Some of you will have cameras that require separate filters that you can use in a drawer or filter wheel.  This particular Optolong SII 6.5nm filter is mounted in an ultra-thin cnc machined 1.25\" threaded body.\u003c\/p\u003e\n\u003cp\u003eThe Optolong SII filter allows a 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).  The SII filter is a great choice to use for astrophotography as it will help with contrast and reveal very subtle nebula details.\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWhen used in conjunction with the  OIII-CCD and H-Alpha, such as the famous “Pillars of Creation” (M16 Eagle Nebula), you can start to bring your own \"Hubble look\" images from  your backyard.  That particular combination of the three filters for imaging, SHO set (H-alpha, OIII-CCD and SII-CCD), can be very helpful when the moon up, or in heavy light pollution, so your equipment is getting used rather than gathering dust. Remember, narrowband filters do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993490505,"sku":"OPTOS1","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/optolong-sulfur-ii-narrowband-telescope-filter_2000x_9f944fb7-1d28-46e4-b5f6-b0682e446a70.jpg?v=1675380165"},{"product_id":"optolong-sii-6-5nm-2-filter","title":"Optolong SII 6.5nm 2\" Filter","description":"The SII 6.5nm from Optolong works fantastically as a photographic filter, but also works for viewing faint nebula.\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters. Some of you will have cameras that require separate filters that you can use in a drawer or filter wheel.  This particular Optolong SII 6.5nm filter is mounted in an ultra-thin cnc machined 2\" threaded body.\u003c\/p\u003e\n\u003cp\u003eThe Optolong SII filter allows a 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).  The SII filter is a great choice to use for astrophotography as it will help with contrast and reveal very subtle nebula details.\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWhen used in conjunction with the  OIII-CCD and H-Alpha, such as the famous “Pillars of Creation” (M16 Eagle Nebula), you can start to bring your own \"Hubble look\" images from  your backyard.  That particular combination of the three filters for imaging, SHO set (H-alpha, OIII-CCD and SII-CCD), can be very helpful when the moon up, or in heavy light pollution, so your equipment is getting used rather than gathering dust. Remember, narrowband filters do not eliminate the effects of light pollution or increase the object’s brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993523273,"sku":"OPTOS2","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/optolong-sulfur-ii-narrowband-telescope-filter_2000x_1.jpg?v=1675380167"},{"product_id":"optolong-lrgb-2-imaging-mounted-filter-set","title":"Optolong LRGB 2\" Imaging Mounted Filter Set","description":"\u003cp\u003eLook no further for an LRGB set for your 2\" filter wheel or drawer.\u003c\/p\u003e\n\u003cp\u003eTime to get serious with your monochrome CCD or CMOS camera.  The filter set works extremely well for deep-space and planetary imaging.  The Optolong LRGB filter set is designed for maximum contrast and with extremely high gradients for a clear differentiation of colors. The set consists of red, green, blue and luminance 2\" filters.\u003c\/p\u003e\n\u003cp\u003eA great amount of thought went into the way each filter approached their intended purpose.  The OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. A designed gap between the green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation.\u003c\/p\u003e\n\u003cp\u003eThe RGB filters are all parfocal and have a steep bandpass to eliminate UV and IR interference.  The filters are all very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993556041,"sku":"OPTOLRGB2","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/lrgb_ccd_filter_set_1.jpg?v=1675380169"},{"product_id":"optolong-lrgb-1-25-imaging-mounted-filter-set","title":"Optolong LRGB 1.25\" Imaging Mounted Filter Set","description":"Look no further for an LRGB set for your 1.25\" filter wheel or drawer.\n\u003cp\u003eTime to get serious with your monochrome CCD or CMOS camera.  The filter set works extremely well for deep-space and planetary imaging.  The Optolong LRGB filter set is designed for maximum contrast and with extremely high gradients for a clear differentiation of colors. The set consists of red, green, blue and luminance 1.25\" filters.\u003c\/p\u003e\n\u003cp\u003eA great amount of thought went into the way each filter approached their intended purpose.  The OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. A designed gap between the green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation.\u003c\/p\u003e\n\u003cp\u003eThe RGB filters are all parfocal and have a steep bandpass to eliminate UV and IR interference.  The filters are all very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993588809,"sku":"OPTOLRGB1","price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/lrgb_ccd_filter_set_1_1.jpg?v=1675380172"},{"product_id":"optolong-lrgb-sho-1-25-imaging-mounted-7-filter-set","title":"Optolong  LRGB + SHO 1.25\" Imaging Mounted 7 Filter Set","description":"\u003cp\u003eThis is the complete set of imaging filters to take your session to a higher level.\u003c\/p\u003e\n\u003cp\u003eThis Optolong set comes with 7 filters.  The LRGB set, H-Alpha, SII, and OIII filters.  \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eLRGB\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eTime to get serious with your monochrome CCD or CMOS camera.  The filter set works extremely well for deep-space and planetary imaging.  The Optolong LRGB filter set is designed for maximum contrast and with extremely high gradients for a clear differentiation of colors. The set consists of red, green, blue and luminance 1.25\" filters.\u003c\/p\u003e\n\u003cp\u003eA great amount of thought went into the way each filter approached their intended purpose.  The OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. A designed gap between the green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eSII\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong SII filter allows a 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).  The SII filter is a great choice to use for astrophotography as it will help with contrast and reveal very subtle nebula details.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eH-Alpha\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe H-Alpha filter is also suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Even better, when used in conjunction with the  OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula), you can start to bring your own \"Hubble look\" images from  your backyard.  That particular combination of the three filters for imaging, SHO set (H-alpha, OIII-CCD and SII-CCD), can be very helpful when the moon up, or in heavy light pollution, so your equipment is getting used rather than gathering dust.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eOIII\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe improved Narrowband OIII 6.5nm filter allows a 6.5nm bandwidth of light centered on a wavelength of 500nm 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.  It also deals with 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\/p\u003e\n\u003cp\u003eThe filters have a steep bandpass to eliminate UV and IR interference.  The filters are all very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993621577,"sku":"OPTOSET1","price":665.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/optolong-lrgb-ha-sii-oiii-telescope-filter-kit_2000x_1d2cb674-59bd-43ea-a2d0-0b10d1d679f3.jpg?v=1675380174"},{"product_id":"optolong-lrgb-sho-2-imaging-mounted-7-filter-set","title":"Optolong  LRGB + SHO 2\" Imaging Mounted 7 Filter Set","description":"This is the complete set of imaging filters to take your session to a higher level.\n\u003cp\u003eThis Optolong set comes with 7 filters.  The LRGB set, H-Alpha, SII, and OIII filters.  \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eLRGB\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eTime to get serious with your monochrome CCD or CMOS camera.  The filter set works extremely well for deep-space and planetary imaging.  The Optolong LRGB filter set is designed for maximum contrast and with extremely high gradients for a clear differentiation of colors. The set consists of red, green, blue and luminance 2\" filters.\u003c\/p\u003e\n\u003cp\u003eA great amount of thought went into the way each filter approached their intended purpose.  The OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. A designed gap between the green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eSII\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Optolong SII filter allows a 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).  The SII filter is a great choice to use for astrophotography as it will help with contrast and reveal very subtle nebula details.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eH-Alpha\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe H-Alpha filter is also suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Even better, when used in conjunction with the  OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula), you can start to bring your own \"Hubble look\" images from  your backyard.  That particular combination of the three filters for imaging, SHO set (H-alpha, OIII-CCD and SII-CCD), can be very helpful when the moon up, or in heavy light pollution, so your equipment is getting used rather than gathering dust.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eOIII\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe improved Narrowband OIII 6.5nm filter allows a 6.5nm bandwidth of light centered on a wavelength of 500nm 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.  It also deals with 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\/p\u003e\n\u003cp\u003eThe filters have a steep bandpass to eliminate UV and IR interference.  The filters are all very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481993654345,"sku":"OPTOSET2","price":1009.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/optolong-lrgb-ha-sii-oiii-telescope-filter-kit_2000x_1.jpg?v=1675380176"},{"product_id":"optolong-sho-2-filter-set-with-h-alpha-sii-and-oiii-filters-hasiioiii-200","title":"Optolong SHO 2\" Filter Set With H-Alpha, SII, And OIII Filters","description":"\u003cp\u003eAdd this set to your LRBG set and get the most out of your imaging.This Optolong filter set is designed to bring out the best in your astro-photography journey.  A great amount of thought went into the way each filter approached their intended purpose.  The OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. A designed gap between the green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation.\u003c\/p\u003e\n\n\u003cp\u003eSII\u003c\/p\u003e\n\n\u003cp\u003eThe Optolong SII filter allows a 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).  The SII filter is a great choice to use for astrophotography as it will help with contrast and reveal very subtle nebula details.\u003c\/p\u003e\n\n\u003cp\u003eH-Alpha\u003c\/p\u003e\n\n\u003cp\u003eThe H-Alpha filter is also suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Even better, when used in conjunction with the  OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula), you can start to bring your own \"Hubble look\" images from  your backyard.  That particular combination of the three filters for imaging, SHO set (H-alpha, OIII-CCD and SII-CCD), can be very helpful when the moon up, or in heavy light pollution, so your equipment is getting used rather than gathering dust.\u003c\/p\u003e\n\n\u003cp\u003eOIII\u003c\/p\u003e\n\n\u003cp\u003eThe improved Narrowband OIII 6.5nm filter allows a 6.5nm bandwidth of light centered on a wavelength of 500nm 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.  It also deals with 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\/p\u003e\n\n\u003cp\u003eThe filters have a steep bandpass to eliminate UV and IR interference.  The filters are all very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481994473545,"sku":"OPTOSHO2","price":669.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/2_inch_filter_set_with_h-alpha_sii_and_oiii_filteres.jpg?v=1675380235"},{"product_id":"optolong-sho-3nm-2-filter-set-with-h-alpha-sii-and-oiii-filters","title":"Optolong SHO-3nm 2\" Filter Set With H-Alpha, SII, And OIII Filters","description":"\u003cp\u003eAdd this 3nm set to your LRBG set and get the most out of your imaging.This Optolong filter set is designed to bring out the best in your astro-photography journey.  A great amount of thought went into the way each filter approached their intended purpose.  The OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. A designed gap between the green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation.\u003c\/p\u003e\n\n\u003cp\u003eSII\u003c\/p\u003e\n\n\u003cp\u003eThe Optolong SII filter allows a 3nm bandwidth of light centered on a wavelength of 672nm through, and reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor.  It also deals with both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).  The SII filter is a great choice to use for astrophotography as it will help with contrast and reveal very subtle nebula details.\u003c\/p\u003e\n\n\u003cp\u003eH-Alpha\u003c\/p\u003e\n\n\u003cp\u003eThe H-Alpha filter is also suitable for viewing on faint emission nebula of H-Alpha line in full moonlight or in severe light pollution. Even better, when used in conjunction with the  OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula), you can start to bring your own \"Hubble look\" images from  your backyard.  That particular combination of the three filters for imaging, SHO-3nm set (H-alpha, OIII-CCD and SII-CCD), can be very helpful when the moon up, or in heavy light pollution, so your equipment is getting used rather than gathering dust.\u003c\/p\u003e\n\n\u003cp\u003eOIII\u003c\/p\u003e\n\n\u003cp\u003eThe improved Narrowband OIII 3nm filter allows a 3nm bandwidth of light centered on a wavelength of 500nm 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.  It also deals with 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\/p\u003e\n\n\u003cp\u003eThe filters have a steep bandpass to eliminate UV and IR interference.  The filters are all very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The filter comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":40481994506313,"sku":"OPTOSHO23","price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/ofil-ol-lrgbsho-2in-1.png?v=1675380237"},{"product_id":"optolong-l-ultimate-2-light-pollution-dual-passband-imaging-filter-3nm-ha-oiii","title":"Optolong L-Ultimate 2\" Light Pollution Dual Passband Imaging Filter 3nm Ha\/OIII","description":"\u003cp\u003e\u003cspan\u003eTake back the night sky by using the Optolong L-eXtreme 2\" Dual Passband filter when imaging. Take your backyard imaging to places you never thought possible\u003cmeta charset=\"UTF-8\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOptolong filters are here to help all of us Earth based Astronauts.  As light pollution gets worse and worse we need something in our tool kit to help us photograph the night sky.  Urban sprawl has created skies that just aren't conducive to imaging.  You can fight back with the assistance of filters.  In the past it has been an expensive proposition to purchase separate filters and filter wheels.  The Optolong L-Ultimate filter will help your imaging tremendously, especially if you have to capture from a light polluted area.  \u003c\/p\u003e\n\u003cp\u003eThe L-Ultimate 2\" builds on the foundation of the past offereing from Optolong and helps our imaging by isolating specific emission lines.  Unlike the L-eNhance filter, the L-Ultimate works on two emission lines while blocking out the H-beta portion.  The filter instead concentrates the 3nm passband on the H-alpha at 656.3nm and OIII at 500.7nm, which is generally the area that nebulas have their strongest emission.  It gets rid of all the other light pollution emission lines so only the emission and reflection signals of the nebula are captured during your session.   Enjoy the darker sky background and the contrast between the nebulae and the signal to noise ratio that has been improved once again. This dual-band pass filter has been designed to work with DSLR, Color CMOS, and monochrome CCD Cameras.  However, fast focal ratio systems will not work with it.\u003c\/p\u003e\n\u003cp\u003eThe filter itself is very well made.  The multi-layer anit-reflection coating is based on an Ion-assisted technology known for durability and Resistance to scratching.  The technology also provides stability to the CWL (central wavelength) allowing no deviation with temperature change.  The 1\/4 wavelength Schott glass filter is housed in a very thin CNC machined housing..  The L-Ultimate comes in a plastic case to protect your investment when not in use.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003csection class=\"main-container col1-layout\"\u003e\n\u003cdiv class=\"container-main clearfix\"\u003e\n\u003cdiv class=\"main-content\"\u003e\n\u003cdiv class=\"product-view\" itemscope=\"\" itemtype=\"http:\/\/schema.org\/Product\"\u003e\n\u003cdiv class=\"product_midsection\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"main-content-inner clearfix\"\u003e\n\u003cdiv class=\"col-main\"\u003e\n\u003cdiv class=\"product-collateral\"\u003e\n\u003cdiv class=\"product-tabs-content\" id=\"product_tabs_additional_contents\"\u003e\n\u003cdiv class=\"product-tabs-content-inner clearfix\"\u003e\n\u003cdiv class=\"box-add clearfix\"\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0 - Not a color filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!----\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":41465494077513,"sku":"OPTOLULT2","price":389.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/image_089fb0a4-58cc-4ca1-bb74-786254216a12.jpg?v=1717153609"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/collections\/E1A3787E-1A88-4212-9684-0F95F24EBC5B.png?v=1678528583","url":"https:\/\/astronomics.com\/collections\/optolong.oembed?page=2","provider":"Astronomics","version":"1.0","type":"link"}