Quote:
Originally Posted by AlexN
Where is the light leak coming from? is that from the focuser? or leaking in thorugh the filter wheel?
Alex.
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Yes Alex, it's coming from the badly fitting Crayford style focuser
on the GSO.
The base flange has a curvature to possible fit a 10 inch scope
ideally, and it looks like they try to get away with it fitting a 12inch.
Bottom line is that it has 4 points of contact with the OTA and that
lets light in.
Alchemy's article clued me up on it, however when I saw the leak for
myself I couldn't believe how bad it really was!
Why go to all the trouble of making such a lovely job, only to do silly stuff
like that...
Steve