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Originally Posted by iceman
....I found a similar level of field curvature to be evident in the Panoptic as the Vixen, however I found much more coma to be evident in the Panoptic than in the Vixen.....
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I'm confused.
I thought that coma was an aberration inherent in parabolic mirrors and not (usually) in eyepieces. Do you mean astigmatism?