Baader Semi APO Filter 20244 the price therefore initially may

the price therefore initially may appear high for "nothing more than" a clamping device

giving imagers the option to shoot at ultra-fast f/2

Pop-up rubber eyeguards provide comfort and increase contrast

25 SCT Goto

25” adapter is included

Baader Semi APO Filter 20244 the price therefore initially mayPlanoptically Polished with Phantom Coating Group (PCG). Baader's newest addition for Achromat owners. The Semi APO 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 +