Mike,
I've just been browsing this site from CSU:
http://black-hole-net.mit.csu.edu.au/telescope/main.asp
They have an all sky camera that updates every 60 seconds like you want to:
http://black-hole-net.mit.csu.edu.au...ces/allsky.asp
Maybe it's worth contacting them just for a bit of advice/tips?
Al.