Perfect for getting the ultimate contrast between the dark sky and the Milky Way and large nebulae. They're available in 77mm or 82mm cells that thread on a camera lens just like a standard protective UV lens filter. These light-pollution reduction filters are designed for wide-field imaging through a DSLR and camera lens. Optolong's brand-new Clear Sky filters are also on sale for 20% off the regular price. The L-Pro filters come in 1.25" and 2" formats, as well as clip-in filter formats for Canon and Nikon APS-C and full-frame DSLR cameras. Unlike many UHC and OIII filters, the Optolong L-Pro passes light in the red, green, and blue parts of the visual spectrum for good color reproduction of stars and extended celestial objects right out of the camera. Filters such as the Five bands bandpass filter L-Pro have gained popularity among astrophotographers and amateur astronomers alike. These light-pollution reduction filters are designed to improve image contrast by blocking light from mercury and sodium streetlamps while passing light from stars and deep-sky objects. OPT carries a large range of Telescope Filters manufactured by Optolong, who has successfully developed more than 20 popular astronomical filters. All are available in 1.25" and 2" threaded cells as well as in unmounted 31mm and 36mm formats.Īlso save 20% on the Optolong L-Pro filter, an ideal filter for both imaging and visual observation. Also, for this weekend and only through Monday, November 27, 2017,Optolong has a short but sweet sale on select imaging filters.That includes savings of 15% on LRGB filters, LRGB filter sets, H-alpha imaging filters (6.5nm and 12nm), OIII imaging filters (6.5nm), and SII (6.5nm) imaging filters.
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