Unlike other light pollution filters such as UHC and CLS, the L-Pro is multi-bandpass filter which offers better color balance by maximizing the transmission band. With a focal length of 200mm and a fast f/4 focal ratio, this six-element ED lens lets you capture a wide field with less expensive smaller-sensor astro cameras. Radian Raptor 61 Canon EOS Ra Optolong L-eNhanced Filter Sky Watcher EQ6-R Pro. Being highly transparent to the main nebula emission lines at OIII (496nm and 500nm), H-beta (486nm), NII (654nm and 658nm), H-alpha(656nm) as well as SII (672nm) See a recent post on Tumblr from jzholloway-sncastro about agenaastro. The filter is a powerful tool for isolating these two important nebula lines against the effect of light pollution and moonlight, and it saves time by allowing.Selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lighting (including mercury vapor lamps, both high & low pressure sodium vapor lights, and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e.The Optolong L-Pro (L-Professional) broadband filter is designed to improve the visibility of various deep sky objects. Filters such as the Five bands bandpass filter L-Pro have gained popularity among astrophotographers and amateur astronomers alike. ![]() ![]() ![]() Color Correction & Minus Violet Filters OPT carries a large range of Telescope Filters manufactured by Optolong, who has successfully developed more than 20 popular astronomical filters.Correctors, Focal Reducers & Flatteners.
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