Thread: 12" GSO secondary
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  #8  
Old 29-11-2007, 11:58 AM
skies2clear
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skies2clear is offline 		 
Join Date: Oct 2006
Location: Adelaide, South Australia
Posts: 238
Does your GSO Dob have a primary mirror cooling fan? If so, and after getting your collimation right, give the cooling fan a go,

CS
Nick
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