8x5min @iso800
8x30secs @iso800
flats and darks to suit
You all know the rig I'm using. ED80 etc.
Had a heck of time battling field rotation.
It's even more noticable when I layer the 30sec sub frame over the background frame.
This is why I've posted the Running Man and M42 as 2 separate images.
The stars over the Running Man are arcs, worse than the ones you see to the top right of m42.
My alignment seemed perfect and PHD had no troubles guiding.
My thoughts are that the time between captures could be to blame. I had a intermittent cloud during the night, so the time between taking the 30sec subs and the 5 minute subs was significant.

I'm such a newb.