Baader Green 500nm Bandpass Filter - Round Mounted - FCFG- Size:2" Excellent 53 degree field of

Excellent 53 degree field of view

5mm of eye relief

Celestron's proprietary SkyAlign alignment procedure is built right into the Celestron NexStar Evolution mobile app

Ideal for high-power lunar and planetary viewing

Can be used between 7 - 77 degrees latitude

Baader Green 500nm Bandpass Filter - Round Mounted - FCFG- Size:2" Excellent 53 degree field ofAbout 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.