Just thinking out loud: the ASI294 is known for its difficult behavior with respect to flat frames.
Besides exposure time (>2s), the most common advice for Siril/PI/APP users is to calibrate each individual flat with a matching dark (aka "flat dark", taken with the exact same settings as the flat), and then only to stack the calibrated flats in order to get a master flat that doesn't over or under-compensates for vignetting and dust.
How can we apply this "good practice" to the ASIAir's Live Mode? As far as I understand, the live mode works with a master bias (that can be set to a master flatdark instead), but that bias/flatdark is subtracted from the master flat, not from the individual flat frames before they are stacked. Does that work as well?
