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Old 06-12-2011, 08:38 PM
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dugnsuz (Doug)
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Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,381
Quote:
Originally Posted by Leonardo70 View Post
Hello DOug,

congratulations for the first light ... very very nice.
For the reflections ... coming from the AP CCDT67 reducer in combination with GSO ... i have the same problem with the 10" depend on position of out of field big stars... You may mitigate it decreasing the reduction factor to F6.5 calculating the right spacer with the AP formula.

This is an example of the same problem on the bottom right corner in one of my old image:
http://www.starkeeper.it/NGC2841.htm

All the best.
Leo
Thanks Leo - beautiful image you linked to. I had to search for your reflection though! I will try the baffle flock modification to see if that cuts down the problem and also pursue the method you suggest.

Quote:
Originally Posted by atalas View Post
Gongrats on the new scope Dug and look forward to seeing more.
Thanks Louie

Quote:
Originally Posted by bmitchell82 View Post
there are always nasty treasures doug
Aren't there just!!!!

Quote:
Originally Posted by strongmanmike View Post
Great start Doug

That M42 looks quite striking, even with the reflection.

Mike
Thanks Mike
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