Baader Green 500nm Bandpass Filter - Round Mounted - FCFG- Size:2" This results in brighter guide

This results in brighter guide stars

light is a valuable commodity for both planetary and deep sky viewing

Excellent 53 degree field of view

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

The Sky Mentor 5X Five Element Barlow Lens - 2" will come in handy for extending the effective focal length of short-tube telescopes

Baader Green 500nm Bandpass Filter - Round Mounted - FCFG- Size:2" This results in brighter guideAbout 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.