Thanks folks. No telescope RowanB. It was taken with a 55-300mm zoom on my DSLR. The lens was at 300mm but that is too short for the moon so it has been heavily cropped too. The details are f11, 1/200s, ISO160, with the mirror locked up and the shutter released by the self timer to help reduce vibration.
It was a still night which helped a lot as even a slight breeze can cause some movement.
It is not as sharp as I would like but it could be due to, even with the conditions, some movement and the lens is probably a bit soft at the top end of its zoom range.
Not the best moon shot I've ever taken, but it was too cold to stand out there trying to get the camera settings right (and I'm filled with admiration for all those poor souls filming penguins and thawing icecaps at the poles... how do they stand it??)