Or, if I’m right, you can use 150 darks with the bias in it which is what I do just to have a step less. But it takes a while to get those ofcourse.
For light frame calibration, yes, only use darks and flats then ?
But for the calibration of your flats, you’ll need to use either bias or darkflats/flatdarks (which is it?).
(Personally, I rarely use bias frames. Normally, I calibrate my light frames with darks and BPM and flats. And I calibrate my flat frames with flat darks and BPM.)