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Bintel BT-252
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10-08-2019, 07:35 PM
Bobbyoutback
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Join Date: Oct 2009
Location: Broken Hill
Posts: 361
Lets sort ideas please .
I think the OP would like answers to the following question
I'll refer to the objective size of the OP scope ' 10" F/5
Question ' If that mirror was of the same quality but figured to F/7
would it show better contrast on planets ?
Cheers
Bobby
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