Quote:
Originally Posted by gregmc
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." |
Dont think anyone is having a crack at anyone here. I'd rather have someone back up their comment with an explanation rather than a 'do this one-liner'.
Note - comment from ZWO in same article:
Support@ZWO March 1, 2021 at 10:05 am
Bias，Dark，Flat all needed.
Clearly there are confusing messages coming from ZWO on the topic.
But, I find that using the bias (even though my dark-flat's might also be picking up the bias) helps out out with calibration.
OP sorry this got off track.