Stacking programs DO NOT automatically handle files that have been flipped 180 degrees or mirrored. If you calibrate light frames (blue) with inverted darks (red) you get a big mess. The ideal solution is never to rotate the files, but prefer the physical rotation of the ccd camera. The question I ask is addressed to the Ekos developers: how to automatically manage the h and v flip? in the indi driver it is possible, but in the work sequence in Ekos it is obviously not possible. currently. Also the tag "ROWORDER" in the FIT header is always written "TOP-DOWN" even when the file is flipped 180 degrees!!. And also if the stacking software uses this data (and it doesn't), it is still wrong data.

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