Filters Eyepiece filter set 1 ¼ " - 6 colors (flat-optically polished)

Baader colour filters are carefully manufactured for amateur astronomical use. The glass is finely polished to be plane-parallel. These filters far exceed the quality of the usual "roughly polished" (= hot-blazed) colour glass filters.

Thanks to their fine optical polish, these filters can be used at any point in the beam path – well in front of the focal point – (e.g. in front of a binocular attachment!) without causing optical errors (astigmatism) or otherwise impairing the image in any way!

Further special features of Baader filters:

• Elaborate frame with the largest possible free opening to prevent vignetting
• CNC-milled "crown grip" – offers excellent handling comfort
• 7-layer anti-reflection coating on both sides with only 0.25% residual reflection per surface