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Re: 5" Achro Optical Test

Started by dhilts, 10/16/2006 03:59PM
Posted 10/16/2006 03:59PM Opening Post
Hi Steve,

Vega is a pretty tough test subject. It can be pretty difficult to accurately asses the rings with an achro due to the out of focus secondary colour. If you have a dark green or dark yellow filter you may want to try it again with a not so bright star. Pick something well above the horizon, mag 2-3 and make sure seeing is steady.

clear skies,
dan