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Cookie8,
You raise two issues:
-getting the webcam to focus
-drift of the moon across the field
If you can see an image of some craters on the screen, then at least you're getting close, more practise and patience....
The second issue is a result of using a scope without a RA drive. Bear in mind the webcam's field of view is the "equivalent" of using a 6mm eyepiece
so things will appear to move pretty quickly.
Again, some practise! position the object at the edge of the field and record as it drifts across.... K3CCD can still stack the centre parts to give a good result.
To improve focussing, set the scope up during the day at a distant object and move the webcam, focusser until you get the best results. I mark my focusser tube position with a pencil line as an aid to find a close staring point later.
Keep practising.
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