I went out the other night to collect some more data for M51. The only problem was that it clouded over after only six frames worth. Although I did use longer exposures than earlier and increased the time from 2 to 3 minutes.
I thought I'd process the six frames anyway... and here it is. 18 minutes worth, looks promising. (I also realised that one of the custom settings was turned on by mistake the other day).
As I had everything setup it wasn't a total waste because I did produce 30 dark frames, whilst it was cloudy.
Good seeing as well :-/