Thread: 12" Dob Secondary Mirror Fogging HELP!!
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Old 09-06-2006, 01:39 PM
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janoskiss (Steve H)
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Join Date: Jan 2005
Location: Sale, VIC
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A large (90+mm) baffled fan behind the primary blowing air up the tube would help. But do use one large fan instead of multiple smaller fans like I did (for reasons I'll post about another).
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