Hi Paul
I can't really comment on the shot in a lot of detail as I am just getting used to the ST4000XCM but there is a bit of noise there on my monitor, did you set the Set Point Temp to well below ambient, that eliminated a lot noise from my shots. The shots I did on Sat night were at -20c, the camera was running at 65% power so I could have dropped the temp a bit more.
Other than the bit of noise, a good shot.
Cheers
John G