Now we have all master calibration files properly created for our light frames.
We have a Bad Pixel Map, a masterdark without bias subtraction and we have a smooth master flat of bias subtracted flats and BPM corrected as well.
We need to remove the flats from our list.
And we make sure only the (second )BPM, masterdark and masterflat is selected to calibrate our light frames.
First let’s have a look at an uncalibrated light frame, please check the selection in the file list, so you can see that we have unselected the master bias:
