10 x 2 mins with darks and flats added.
and 5 with a few random times too from 30s to 600s
8"sct with 6.3 reducer 40D unmodded
I have tried to stack this several times but end up with something that looks like a wahsed out mess. Finally managed to get this from them with a lot of messing.
http://mdhphotography.biz/images/etasmall.jpg