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Cooling Fans
Because my scopes are set up permanently outside l haven't had a need for primary mirror cooling fans but l had an idea #some of you may have already thought about it#, the small cooling fans that they use for computers look pretty compact, about 75mm sq in their mounting box, seen them at the local computer market for $8.00 each and thought 2 of these would work a treat, hop it's an idea someone can make use off.
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