7/25/2023 0 Comments Agena astro optolongAll Optolong filters are made of high-quality anti-reflection coated Schott B260 glass that is fine optically polished to 1/4 wave. Optolong Optolong Filters & Accessories 1 2 3 Sort By Show Optolong City Light Supression / Light Pollution Reduction CLS Filter - 1.25' 55.00 In Stock Add to Cart Free US Shipping Optolong City Light Supression / Light Pollution Reduction CLS Filter - 2' 85. Founded in 1999, Optolong has become an integrated enterprise not only specialized in R&D, but also good at manufacturing. The Optolong L-Pro helps to fight light pollution against broadband targets such as these blue reflection nebula and galaxies, while the Optolong L-Extreme isolates hydrogen and oxygen nebula emission lines to capture supernova remnants and more. Optolongs L-eNhance filter effectively isolates the H-Alpha, H-Beta, and Oxygen III nebula emission lines and achieves a maximum transmission of around 90. They have been designing and manufacturing filters since 1998 and supplying those filters to over 700 optical companies around the world. is the brand owner of optolong who is the joint of industry and trade. Optolong H-Alpha Filter 7 nm, 1.25"H-Alpha 7 nm filter is the most popular narrowband filter allowing 7 nm bandwidth of light centered on a wavelength of 656 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 (skyglow).īest choice of narrowband H-alpha astrophotography filter for highest contrast and revealing subtle nebula details. Optolong is not a newbie to the filter scene.
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