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Old 05-06-2019, 08:57 AM
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Camelopardalis (Dunk)
Drifting from the pole

Camelopardalis is offline
 
Join Date: Feb 2013
Location: Brisbane
Posts: 5,478
So, I understand the physics behind it, even while my attempts to articulate it may have been lacking previously

But I have a question - and just to be clear - because I’m uncertain and would like to understand further, not because I’m trying to be funny

What’s the deal with “extended” objects, and why are they treated differently? Surely they are photon sources subject to the same mathematics?

FWIW, I have example images of a popular galaxy taken with my 4” and with my 8” (with different cameras, so resolution +/- 10%), where the 8” shows better detail, comparable noise levels, but in 1/4 the exposure time. It’s not night and day, but I thought it was a worthwhile experiment. If anyone wishes to seem them, I will post...
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