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Panoptics compatible with C8-S?

Started by zephwr, 03/22/2004 05:17PM
Posted 03/22/2004 05:17PM Opening Post
Sorry if this is a stupid question, but...

Since I got myself 24mm and 27mm Panoptics (the 27mm will be replaced with a lower power), I've noticed flaring of stars towards the outer edge of the FOV. This is despite a pinpoint sharp center (when the scope is collimated to be pinpoint sharp in the center).

With star clusters (one of my favorites), the result is a small patch of beautifully sharp stars... surrounded by annoying blurs I need to block out of my mind. It is truly a waste of FOV, not to mention money!

Is my 8" SCT defective?

These televues are designed to correct aberrations in certain scopes. Am I wrong? If my scope doesn't have these aberrations in the first place, would the Televues be introducing those aberrations to an otherwise fine scope?

I don't know if I need to sell my Panoptics or repair my C8-S.
Posted 03/22/2004 10:42PM #1
Everything is fine. The Pans are not as sharp at the edges as the Naglers. Keep in mind that a lot of these wide field designs are optimized for use in fast newts, not SCT's.

To paraphrase the late Bob Cox who was an editor for Astronomy magazine, "just how much time do you spend looking at the edges? I usually look at the middle."

Don Wyman

Don Wyman
Obsession #1166 18" f/4.5
with Argo Navis and ServoCat
WO Megrez 90 APO
Coronado PST