600? That's for wimps
2,400 seconds, now that's more fun
Seriously though - 600 is quite common for me, it's only vary occasionally it's worth me going to 40 minutes (2,400) with digital. And that's with the SBIG so noise isn't such an issue, I don't think I'd try 2,400 with the Canon
I guess everyone has their own recipe for disaster ... err, I mean good images.
