Ok great, got it. I totally missed that it was in the filename and that it, too, would be scanned.
It looks way better now, going to press the RUN button now. Thank you very much for your help! This was my first post in the forums and am very impre…
Sorry if that was confusing: I have D1 data from two nights and D2 data from two nights (4 total nights).
"You have custom filters that you assigned and they are being calibrated by the flats from two filters taken on two different nights. So you h…