When manually entering RA/DEC coordinates in the imaging UI, should I be using J2000 coordinates or the date coordinates? They are slightly different. I've had some difficulty with this and ended up cropping out the coma of C/2021 A1 Leonard.
Speaking of which, if anyone has data of Comet Leonard from December 31st, I would greatly appreciate it in order to create a mosaic. I'm uploading my RGB data right now under a Creative Commons license if anyone else wishes to use it (will share a Dropbox link soon)