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Baader Planetarium Ultra Narrowband 4.5 nm OIII CCD Filter - 65x65 mm Square - FOIIINU-SQ65

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Baader 65x65 mm Square Ultra Narrowband 4.5 nm OIII CCD Filter

Presented in a 65x65 mm square format, this Baader Planetarium Ultra Narrowband Filter gives users the ability to experience the field of extremely narrow 4.5 nm O-III CCD imaging. This premium grade filter blocks IR and is best suited for telescopes with fast optical systems ranging from f/8 to f/3. Contains ageproof sealed edge coatings and prevents halos, reflections, and ghosting.