Hi all,

I need help in taking my flats. I used the flats calibration wizard to generate my flats frames. The image I got after WBPP was awful. It was full of artefacts that I couldn’t get rid of. When I stacked only the lights and master dark the image looked fine, without any of the artefacts.

So I was hoping someone could advise what ADU value I should use the flats wizard to get good flat frames. I have a SW 100ED Esprit, Optolong L-Ultimate filter, and asi2600mc.

Does anyone have the same or similar setup who can help me?

Oh and yes I take flat darks to calibrate with my flats.

Thanks in advance.

Rene

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