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Old 13-07-2015, 09:13 PM
glend (Glen)
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glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 7,121
I am a fan of f5 s as I have two of them, and the big dob is a f4.5. The f5 I, imho, easier to collimate. Re the secondary, what is your primary use, visual or imaging?
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