Multiple Night Processing

So, darks don't have to be taken each night. You can just load them all together and create a master-dark and BPM. Bias, same thing, load those and create a master-bias.

Then I would clear the data and start loading in the sessions and the flats for those sessions. Load in the masters you created and you should be fine. It is also possible to do this all at once, but to keep it simple for now try the above.

ok, i think i got it, I still need to load all my light frames for each session. there is no master light.

No, the "master light" would be the end-result, the integration. To get that, you first need to calibrate all those lights with the master calibration frames.

I have a followup question, I recently did a multi night session as well, and I have a rotator.  I made a mistake and didn't load my previous night image into NINA for proper alignment and plate solve.  The bottom of the image just seems a little bit off, I'm curious if this is just a staking artifact, or if not, is there a best practices to get them to align.  I'm also planning on adding more HA Data, but I'll remember to load a previous image to get the right angle and plate solve solution.

@thextra10th All the edges are a bit off. This is caused by dithering or by drift of the telescope during imaging. Both introduce slight offsets of the frames with respect to each other and the edges show where less data was added. Normally you crop the images just at or slightly inside those edges to get rid of them. This is completely normal and expected behavior.

@wvreeven ok, thank you  I new I could crop, and I do dither, but because I forgot to load a previous nights image into nina ( even though I saved the sequence with target position information) I though I messed up a little bit.  Thank you and have a great day