I have one of the Gerd Neumann panels and it works pretty well but I prefer sky flats. I find they calibrate a little better and I don't need to do them in the dark. Doing sky flats manually would be a bit of effort. I use ACP and it automatically tracks the anti-solar point and adjusts exposure to keep the ADU levels within set limits. I think some of the other automation tools offer this too. I know that CCDAP does, at least.
Cheers,
Rick.
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