My apologies for the lack of information. By more unrealistic I mean an image like this:
http://www.flickr.com/photos/istargazer/170181329/
Ok, my workflow.
ISO:200
f-stop: ~9
Manually bracketed shutter speed in increments of +1/-1
Around 5 shots from a decent tripod.
I need my original pictures for sure, I think I'll try some HDR's tomorrow and get the originals up for you guys to help. But so far in my description, any problems jump out at you? I think I might start overexposing from the beginning, the darker frames I think are screwing me but I don't know of any other way to capture the sky...