Thread: Mirror Coating?
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Old 07-05-2014, 04:11 PM
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cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline 		 
Join Date: Jan 2005
Location: Cloudy Mackay
Posts: 6,542
Once every few years. They generally don't need a clean as I store the scopes slightly pointed downwards so dust doesn't settle on the surface.
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