shot this one again last night. had planned for another 40 x 8min, but a combination of high cloud and dew cut to session to about 3 hours.
I've combined this with the subs i acquired the night before and re-stacked in DSS (another first for me - combining image data from several nights!).
This is the result. Because i had the extra 3 hours of data i didn't push this one quite so hard in the processing, so i think less noise and a more pleasing colour balance.
In total: 63 x 8 min subs @ ISO800
What do you think?