Thanks Alan, Leon and Ian.
Here's a bit less saturated version plus individual raw stacks. Been imaging last night also in between high cirrus around. Tonight's looking good also, may have a go at the moons.
Unfortunately the more power the less frame rate, these were taken at 11 fps, approx. 500 frames per stack.
Raw stack animation:
http://astrob.in/full/182457/0/
Cheers, Seb