I tried my hand at some astrophotography tonight. Certainly less-than-ideal situation (as I'm in the city and talk about light pollution) Takes a lot of tweaking to even get something remotely acceptable.
4s, f/1.4, is1600, 24mm. (And a whole-lotta-levels tweaking in CS5.)
I don't know how you more experienced folks do it. I see some people say start with iso1600, f/1.4, and 20s. All I got was nothing but a white, blown-out image. I need to get out of the city I suppose.
Would've been nice if I had something on the horizon for reference/composition but I was just gunning to capture some stars tonight. This will be a VERY LOONG work-in-progress for me. But I'm eager to learn.