Quote:
Originally Posted by srmnm
You bothered to share any science here? 'Secondly' or otherwise?
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I get the impression that people, when describing a process, just carry over processes from CCD to CMOS without knowing why. It just becomes what everybody does.
I do remember seeing some explanations of why no bias but I also remember ZWO mentioning it so I did a quick google search on ZWO seeing you mentioned a ZWO camera.
Check out this from ZWO. In particular, I think the second last paragraph mentioning no bias frame.
https://astronomy-imaging-camera.com...-amp-glow.html
i.e. "Unlike CCD cameras, to ensure you properly remove glows, you should only subtract just the master dark. Do not use a master bias. A master flat may still be used."