Thanks guys.
Here's hoping tonight brings even better conditions!
saturnino - I've attached an image from the same AVI, but made from 855 frames. The quality graph in Registax 4 showed these frames all 90% or better.
I'm not sure it made a massive difference, although the extra frames do mean you can do a little more sharpening. The image also appears a little brighter
I've noticed in both images a couple of little 'dot' features to the lower right off the tip of Syrtis Major. Anyone got any idea what they are?
Cheers.