Celestron 20x80 Giant Dlx

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Subject: Re: vote by xxx.xxx.184.120
By: mmcdonald
Date: 02/16/2003 10:37:49 am PST
There is a great deal of vignetting on daytime views, given the 4mm exit pupil. Bands of discoloration are visible in daytime in the transition from the center to the edge of the lens, as though the light has to pass through too much coating there.
Nighttime views are pretty good, but discolorations due to the multicoatings and chromatic aberration is everywhere. Views of Jupiter and moons, for example, contain so much noise from false color, that you are almost not sure what you are looking at.
These are good for sweeping views of the Milky Way, but not much more.

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