Quote:
Originally Posted by vanwonky
Right so noise is the key. But are you saying that the stacking software will do nothing significant if anything at all (with exception of noise removal) with the image data (nebula etc) as far as improving it in these similar images?
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Longer subs will give you more signal, as will more aperture or a more sensitive camera.
More subs, give you better signal to noise ratios. Signal stays constant while noise lowers. A better signal to noise ratio will allow you to stretch the data in post processing and bring out more detail before you start lifting the noise in the picture.