Not a ZWO camera but QHY, probably more the gain/offset settings that caused excessive central whiteness, as very little in the way of curves have been applied post processing in PS
Quote:
Originally Posted by Placidus
Welcome 
Perhaps 120 seconds is too long for the ZWO camera on such a bright object, and the centres of the stars have burned out.
Have a look at the raw stack, before any stretch or curves. If the centres of the stars are already white, then the exposure is too long. If the centres are not white, then process again, but without clipping the brights to white.
Best,
MnT |