Quote:
Originally Posted by iceman
Great images, Al! I don't see any evidence of blown out highlights? Which image are you referring to?
|
Have a look at the images with Clavius in it. The highlights Aren't blown - that's the puzzle to me - the detail in the highlights just isn't there. I notice the detail in the highlights is the first thing to go when dew starts to form on the scope, and this is the same except I can't find any evidence of dew or frost on my scope. Of course, it could've been a very thin layer of high cloud, but I couldn't see that either.
The other sign of this problem is when looking at stars - that "glow" or glare around the star like dewed/frosted optics...
It was really bad on my scope about 3-4 months ago, and I decided to clean my corrector plate 'cause it was pretty grotty. That made a big improvement!
So ATM I think I've got clean optics, and can't see the cause for the glare/loss of detail in highlights. I thought someone might have some clues of other things to check...
Al.