Quote:
Originally Posted by Camelopardalis
2) depth - so long as your images are sky limited, stacking many short images should still amount to a similar numerical result. If a photon arrives from a faint part of an object every 10 minutes and you take 10 minute subs, over the course of an hour you collect 6 photons. With 1 minute subs you still collect 6 photons in the same time...
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Wouldn't many of the one minute exposures have no signal at all? Hence you collecting noise rather than signal.
Also, if the camera is downloading, that lone photon might be missed entirely....as opposed to the camera with its shutter being open most of the time.