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Old 25-09-2014, 12:25 PM
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Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline
 
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,203
Quote:
When comparing eyepieces of the same focal length and field stop diameter (Meaning same TFOV) will an EP with a larger AFOV give a darker sky background due to spreading the same incoming light over a larger "area" or does it not work like that?
The scenario you suggest is not possible: AFOV(deg) = FSD/(Telescope)FL*57.3
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