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My Calibration process ......
I use the ZWO 2600MC and through extensive testing last year in my Newts found the following Calibration works best for an even flat field
Capture software is APT using Flats Aid Tool
Flats ADU range 8500 to 32000
Without filters exposures usually 1 to 2 sec
With L Extreme filter usually 5 to 15 sec
Generally capture 40 Flats
Flats are calibrated with Bias ( exposure time 0.000032 sec ) I usually capture 50 to 100
Dark flats don’t work
Darks don’t work
Lights , Flats and Bias stacked in DSS
I don’t use Master Bias , I find new Bias frames for each session work better in DSS ( they take no time to capture just a minute or so )
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