Quote:
Originally Posted by gregbradley
These sensors are so low noise that when you do a dark subtract you will visually see the increase in noise. It seems counterintuitive but that's what happens.
But a master bias subtract seems like a good thing.
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I totally agree. That's why now I use 250 frames to create a master bias frame that is very smooth.
Generating a master dark from so many frames is simply not practical, and using a master dark generated from a significantly lesser number of frames will add noise to the light frames, because these sensors are really low noise.