Quote:
Originally Posted by alistairsam
so Shot noise just refers to the rate of incoming photons or variation in the rate, more like jitter (in networking) and has nothing to do with sky background?? why is it referred to as "noise"? sorry to detract with the basics..
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To add to what Barry said, sky glow is not noise (it is unwanted signal) but it has shot noise associated with it just like the signal from the object does. That's why we hate sky glow... it adds shot noise to our subs.