DSLR and telescope?
I've been following some of the progress the DSLR team has been making with regards to DSLR photometry and a couple of weeks ago I played around with my DSLR (Canon 450) in taking some shots of the moon and a couple of DSO's for grins and they came out ok. I've been thinking of how well this would work for doing photometry and if there are any specific things to look out for. I know the documentation and focus has been on using a DSLR on a tripod but what about using on an ALT-AZ scope? Has anyone tried it and what were your finding? I'm using a Celestron CPC 1100 and figure I'd probably need to use the 6.3 reducer to get a wider field and speed up the scope a bit but the hardest part is focusing, man it drove me nuts when trying to hit the DSO's.
Any suggestions or experiences from those who have tried this are appreciated!