
I managed to get 60 minutes of exposure although I wanted about 2.5 hours through the Megrez 72 before the weather broke.
http://farm4.static.flickr.com/3498/401 ... fbcc_b.jpg
20 x 3 minute subs.Canon 450D (unmodded and a CLS filter)
I was also using the new Skywatcher field flattener. It looks like it did a pretty decent job with the Megrez 72 (ignore the tracking errors