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Deep Sky Filters

 
 

If you have been searching for a high-tech filter to help reveal those tantalizing planetary nebulae and supernova remnants on your observing list, such as the Veil, the Dumbbell, and the Owl, then check out Celestron’s Oxygen III (OIII) Narrowband 1.25" Filter! Its durable vacuum-deposited coatings are carefully designed to block all of the visual spectrum ranging from 400 nm to 700 nm, offering the extreme contrast necessary to reveal hidden details that other filters sometimes miss. For the best results, make sure to combine it with a sufficiently low power eyepiece that offers a minimum of a 5 to 7mm exit pupil with your telescope.

Looking for a high-quality set of 2” narrowband filters that won't deplete your bank account? Then check out Optolong’s highly popular 2" Filter Set with H-Alpha, SII, and OIII Filters! Made with multi-coated Schott glass using ion-assisted deposition technology to ensure scratch resistance, these quality filters drastically reduce the levels of light pollution plaguing your skies, bringing out those beautiful details in your astrophotos that you can be proud to share!