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Old 29-05-2010, 02:51 PM
Hans Tucker (Hans)
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Hans Tucker is offline
Join Date: Jul 2008
Location: Melbourne
Posts: 1,533
Originally Posted by bert View Post
I shot some images on a qsi583 with the 1.25 filters last week with a tak fsq106 at prime. It DOES vignette. I suppose it could be flated out, but I was playing around and didnt get too serious about calibrations.

It may not on slower scopes with a shallower light cone, I didnt test it though.
That is why SBIG advises not to use 1.25" Filters and why they have gone to 36mm eliminate vignetting at an economical price. An alternate option to going up to 2" Filters which is what I elected to do.
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