Baader Green 500nm Bandpass Filter - Round Mounted - FCFG- Size:2" a fully mechanical stage

a fully mechanical stage

carrying case

sharp image with true color

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Baader Green 500nm Bandpass Filter - Round Mounted - FCFG- Size:2" a fully mechanical stageAbout the Baader Green 500nm Bandpass Filter Round Mounted Baader Planetarium astronomy filters by far supersede the mediocre quality of common "flame polished" color filters. A fine optical polish and 2 mm thick glass allows the Baader Green Filter to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way.