DAMN....
Stop beating me to all the good targets Lewis!
This is great for a single sub.... I havent had much luck detecting it in my thermonuclear camera, all the noise washes it away.....the best I have tried so far is the attached 3 min @ ISO 1600, which is noisy as hell. Its barely visible and I am not sure what was going on there.
By this time next year you will have all the Messiers done!
Keep at it!
Cheers
Chris