Flats drama inc. No way I can get rid of those nightmares :-)
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expecially the one down below… any suggestion?
Cheers,
Askar Fra 400, L-QEF, ASI2600MCPro,
Below one of the flat (sky flat, nina flatwizard)
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This should actually be manageable.
How have you calibrated your flats? How does the integrated master flat look like.
Do you have the opportunity to create new flats? It looks like your skyflats have a heavy gradient.
Are you using BIAS or Darkflats to calibrate?
Have you blinked through all Flats / Darkflats / Bias to see if there are any outliers?
Have you calibrated your lights properly with matching Darks?