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Old 11-02-2009, 10:15 PM
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Shano592 (Shane)
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Shano592 is offline
 
Join Date: Jan 2009
Location: Central Coast NSW
Posts: 1,267
A question about F/Ratings

I am still gathering information on the scope(s) I will eventually get ...

Having looked, and looked, and read whatever I can find, I am not 100% sure on what the F/rating has to do with anything scope-related.

I understand that a 200mm diameter, 800mm focal length scope has an F/4 rating, but what does this mean for me, the very average user?

Is an f/4 telescope necessarily better or worse than an f/10 one? I am assuming that the f/number is listed for a reason on your average telescope.

Experts, the floor is yours, with thanks ...
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