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Focal ratio
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10-12-2012, 11:56 PM
Langaandy
(Andrew)
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Join Date: Dec 2011
Location: Sydney
Posts: 28
Focal ratio
Hi guys,
Just a question on f ratios.
What is better for DSO and astrophotograhphy in general. It's lower isn't it. Eg f/4 is better than f/5. And does this affect viewing at all.
Also my camera is connecting prime focus
Cheers
Langaandy
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