I have started going through my old data sets. I am just deleting the early data though poorer scopes and with sometimes eggy stars or not quite nailed focus. But the data I am happy with I am doing a run through in APP to save calibrated light frames so if I feel inclined to go back and do processing over, I can just integrate what is there and not find myself doing the "What darks and flats went with that?" dance, so I can delete the old calibration frames and un-calibrated lights.
If I don't have calibration frames to match, out they go.
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