I’ve been playing about with long exposures recently, although I haven’t had the time to go out and take some more “formal” shots, I took this one locally recently. It’s a 17 min exposure, f5.6. Unfortunately with the cold weather (winter) the sky was a little hazy, which washed the stars out a little.
As past of my experiments into long exposures it became quite obvious that I needed a few new toys, an external timer and shutter release, which I got cheaply on eBay, and an easy method for calculating the correct exposure length. Solution: I made my own handheld exposure “computer”. Details on this can be found in the Long Exposure Tutorial.