Thread: My dirty mirrors. How often should I clean them?
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Old 26-06-2006, 10:06 AM
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Roger Davis
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Roger Davis is offline 		 
Join Date: Nov 2004
Location: Sydney
Posts: 300
Never shine a white light torch down any reflecting telescope!
That is not the way to look for dirt (believe it or not!).
See my answer on the Corrector Plate cleaning in this forum.
Wash it at your own peril! Leave it for another couple of years.
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