Baader Semi-APO Filter - Round Mounted - FSAPO- 15 mm Eyepieces Secondary Mirror Obstruction by Area:

Secondary Mirror Obstruction by Area: 14 %

25" occular

Camera Control port

Eyepiece Type: Enhanced for Solar Viewing

Explore Scientific 30mm 82 Degree Series Waterproof Telescope Eyepiece - 2" Features

Baader Semi-APO Filter - Round Mounted - FSAPO- 15 mm Eyepieces Secondary Mirror Obstruction by Area:About 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