Very nice Darius! I haven't got round to looking at that data yet as I've been away most of Christmas and New Year, but I'm currently pre-processing for M45 data then I'm going to go take a look at this M42 data.

Did you need to delete many subs due to clouds etc?

Phil

I only had to sort out a few frames. If I remember correctly, the blue channel was most affected by strong and weak halos around stars. I sorted out the frames with strong halos and I left the frames with weak halos.