Thread: F-ratio myth
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  #38  
Old 21-02-2018, 10:49 PM
ErwinL (Erwin)
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Join Date: Jul 2017
Location: Germany
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Quote:
Originally Posted by Peter Ward View Post
... Starlight does not come in at angles...
It does! The angle of the light from a single star is too small to resolve (except Beteigeuze I believe), but the angle between the different stars on our images can be resolved easily.

As a result, the star images will not get brighter with F-number, but extended regions like nebulae will!
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