astro.n-minus

Filter

Baader Planetarium O-III Narrowband-Filter (6.5nm) – CMOS-optimized

Baader Planetarium · O-III Narrowband-Filter (6.5nm) – CMOS-optimized · narrowband telescope filter

Key specifications

Filter typeNarrowband
PassbandO-III
Bandwidth6.5 nm

About

A CMOS-optimized 6.5 nm FWHM O-III narrowband filter (Precision Grade) for optical systems slower than f/3.4, with Reflex-Blocker hard coatings, sealed coating edges and blackened edges.