At some point in the future, I’d like to do a processing tutorial on M45. It is imperfect. The stars are not exactly good (there seem to be some pinched optics, a bit of miscollimation), there is light pollution etc. But, I think the data are salvageable!

You can download a zip file with the LRGB stack here: M45 Data

Here is a tutorial I did on Andromeda: