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Started by William123, 03/06/2003 09:01AM
Posted 03/06/2003 09:01AM Opening Post
I have heard that the TeleVue 35mm Panoptic eyepiece has pincushion distortion. Is it noticeable when observing? If so, why would anyone want to observe with it? Do all Panoptic eyepieces have this pincushion distortion?

Bill G.
Posted 03/06/2003 09:21AM #1
I have a 27mm and 15mm Panoptics - I can not see any distortion. Maybe I need my eyes checked. But I agree with Chris that these things are very subjective. I've also noticed that my eyes differ in light & color sensitivity. My left eye sees more color and sees objects brighter than does my right eye. But with either eye I don't see any pincushion or other distortion in my Panoptics at night -- haven't looked for it in the daytime. Perhaps pincushion like beauty is in the eye of the beholder.
Posted 03/06/2003 11:47AM #2

Rectilinear distortion (pincushion in this case) is the price one pays for the excellent edge correction (i.e., lack of astigmatism) that the Panoptic series provides. I've owned three Panoptics including the 35mm and have been very satisfied with their performance.

Dave Mitsky

Chance favors the prepared mind.

De gustibus non est disputandum.
Posted 03/06/2003 02:25PM #3
Pin cushion distortion just means the stars are in
slightly wrong places in the view. Doesn't hurt a
thing. You may notice something slightly odd if
you move the scope fast while looking in it -- stars
near the edges will move on curved lines; no
big deal. And if you like looking at fence posts
during the daytime, you'll probably notice it, too.