Baader Contrast Booster Filter - Round Mounted - FCB- Size:2" 9 x 2 in (135

9 x 2 in (135 x 126 x 52 mm) in (135 mm)

Diffraction limited "on-axis" performance is a given

because the design is impractical

25" eyepiece mount allows a variety of astronomical eyepieces to be used with the spotting scope

Dark Blue (435 nm) Bandpass

Baader Contrast Booster Filter - Round Mounted - FCB- Size:2" 9 x 2 in (135Choose either the Baader 1. 25" or 2" Round Mounted Filter from the dropdown About the Baader Contrast Booster Filter The Baader Contrast Booster Filter is much more than a simple minus violet filter. Based on the popular Baader Moon & Skyglow filter, the Baader Contrast Booster takes contrast enhancement and skyglow reduction to the maximum level possible from a filter. Not only does this filter deliver a significant enhancement to planetary and