Thread: F-ratio myth
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Old 22-02-2018, 01:45 PM
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Peter Ward
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Peter Ward is offline
Join Date: Dec 2007
Location: The Shire
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Originally Posted by Shiraz View Post
also applies to stars Peter. Faster optics produce smaller more intense focal plane spots from unresolved objects like stars - works just the same as with extended sources.
I'm still having problems with this..

With my system in its native F8.0 configuration I can expect around a 10
micron Airy disk. A good match for my 9 micron pixels.

If I reduce the focal length I might get 6 micron airy disks. Those big pixels won't notice any more photons....the aperture has remained the same...hence I'm unsure of what you mean by "more intense"
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