A good demonstration of the benefits of low read noise, Suavi. It would be interesting to figure out how long your subs would need to be to be sky limited:
http://www.iceinspace.com.au/forum/s...d.php?t=117010
Quote:
Originally Posted by Atmos
Basically, if you stack a lot of images where the fainter regions and buried in the read noise, no matter how many you stack together you'll not regain those faint regions.
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This seems somewhat intuitive, but it's not true
We overcome the effects of read noise with very faint data every time we create a master bias or master dark frame.