Oxygen III Narrowband Filter

Cloud Break Optics Verified independent store

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Description OIII 8nm Narrow Band filters isolate the doublet emission of doubly ionized Oxygen. After ionized hydrogen, this is the next most common emission when imaging nebulae. Doublet emission occurs at 495.9 and 500.7 nm. Specifications Parfocal for systems f/4.0 or slower Transmitted wavefront better than 0.25 waves/inch Parallelism: less than 30 arcsec Made in America Show more