astro.n-minus

Filter

Baader Planetarium 6.5nm Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II)

Baader Planetarium · 6.5nm Narrowband Filter-Set – CMOS-optimized (H-alpha / O-III / S-II) · narrowband telescope filter

Key specifications

Filter typeNarrowband
PassbandH-alpha / O-III / S-II
Bandwidth6.5 nm

About

A set of three CMOS-optimized 6.5 nm FWHM narrowband filters (H-alpha, O-III, S-II) for optical systems slower than f/3.4, with Reflex-Blocker hard coatings, sealed coating edges and blackened edges, matched for 1:1:1 exposures.