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Re: [ATM] More on aperature stops

Since he's using a liquid optical cleaner, he could have fogged the interior of his eyepiece. I suggest trying the eyepiece with a cheap refractor (or a good one if available) to eliminate the eyepiece as the cause. I've seen similar fogging in cold weather and humid conditions.
 
Ken Hunter
 


Mark Holm <mdholm@telerama.com> wrote:

Alternately, if you commonly use the same eyepiece for most of your
observations, it could be a poorly polished lens in an eyepiece.

-- 
Mark Holm
mdholm@telerama.com

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