Product DetailsA. About Optolong's L-eXtreme FilterThe Optolong 2” L-eXtreme filter builds on the success of the renowned L-eNhance filter to deliver an even higher degree of contrast when imaging emission nebulae, planetary nebulae, and supernovae remnants. The L-eXtreme is two filters in one. It h..
Product DetailsA. About Optolong's L-Pro FIlterThe Optolong L-Pro (L-Professional) broadband filter is designed to improve the visibility of various deep sky objects. It does this by:Selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial l..