The convenience and cost effectiveness of this filter allows amateurs to image emission nebulae even in bright, light-polluted or moonlit skies. 12: 0: 0: 1: Flame Nebula NGC 2024 Martin Doppelbauer. The Optolong L-eXtreme is a 7nm dual-bandpass filter which can be used with one-shot color cameras like DSLRs and CCD/CMOS astrophotography cameras. 18: 0: 0: 0: Dantes Inferno (IC 417 Spider Nebula and NGC 1931 Fly Nebula) Martin Doppelbauer. High Point Scientific Agena Astro Agena Astro Agena Astro M 94 revisited Martin Doppelbauer. Founded in 1999, Optolong has become an integrated enterprise not only specialized in R&D, but also good at manufacturing. 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. 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. × Interested in Optolong H-Alpha 3nm Our sponsors sells this product. Optolong L-Ultimate Review Agena Astro affiliate Galactic Hunter created this detailed written review of the Optolong L-Ultimate, plus a video version. is the brand owner of optolong who is the joint of industry and trade.
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