Baader Semi-APO Filter - Round Mounted - FSAPO- 15 mm Eyepieces and a cradle ring assembly

and a cradle ring assembly with Vixen-style dovetail mount

Baader Contrast Booster Filter Specifications

The Baader 1

Secondary Mirror Obstruction by Area: 14 %

Baader Semi-APO Filter - Round Mounted - FSAPO- 15 mm Eyepieces and a cradle ring assemblyAbout the Baader Semi APO Filter Round Mounted The Baader Planetarium Semi APO Filter works like it'''s name implies, delivering an amazingly neutral view, while cutting most of the annoying and contrast robbing violet fringe that plagues all achromats. The Semi APO filter combines a stronger Fringe Killer coating formula with the Moon & Skyglow Neodymium substrate. The result is similar performance to the Fringe Killer plus Moon & Skyglow