On 5/23/2012 6:34 AM, Chris Trask wrote:
> This one is more practical:
>
> http://www.cloudynights.com/ubbthreads/attachments/2722210-scherm1.jpg
>
> If you use frosted glass or plastic for the viewing screen you can
> photograph it from behind. Difficulty in making this is finding a refractor
> telescope with a 2-point finder mount.
Needn't be a refractor, should work with a catadioptric telescope.
<http://galleries.moosemystic.net/MooseFoto/index.php?gallery=Tech/Misc&image=IMG_0420croof30.jpg>
I'm not sure it the tube is large enough for the finder mount on mine, but the
design is certainly simple. Fortunately,
I don't feel a need for one. I guess I got it out of my system 40 some years
ago. :-)
Folded Optics Moose
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What if the Hokey Pokey *IS* what it's all about?
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