Baader Eyepiece Filter Yellow 1.25", 495nm Longpass, Optically Polished w/MC - 2458301

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Highlights Available in 6 colours for contrast enhancement of lunar and planetary observations. Largest free opening of all the colour filters on the market which eliminates any vi gnetting. Double 7-layer anti-reflection coating with only 0.25% residual reflection per surface (Phantom Group Coating) Available Filters: Dark Blue Filter, Light Blue Filter, Green Filter, Yellow Filter, Orange Filter and Red Filter. Both sides 7-layer AR coating with only 0.25% residual reflection per surface. This is the most antireflective that has ever been undertaken with color filters. Show more