Thread: Barlows and f number
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Old 21-03-2014, 10:15 PM
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Regulus (Trevor)
Regulus - Couer de Leon

Regulus is offline 		 
Join Date: Nov 2011
Location: Devonport, Tasmania
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Barlows and f number
Does a 2x barlow increase the scopes f number the same way a 2x teleconverter does with a camera lens?

Trevor
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