Found this on UKAI forum - Astro imaging course notes put together by Ian King, Nik Szymanek an Tommi Worton.
Very informative, might even tempt you to book the course ;)
http://ukastroimaging.co.uk/index.php?ind=downloads&op=entry_view&iden=1
Enjoy,
Mick
I've been on one of these courses, alogn with Jim and Ian. I found it pretty useful stuff. Tommi Worton was a bit naff, but Ian and Nik were good.