This is a familiar sight in Many Glacier. But if you look close, you'll see star tracks in the background (those long streaks of light). It's about a 20 minute exposure, lit entirely by moonlight. The tech specs: taken with a D300 in RAW format, I had the long exposure noise reduction set on high, the camera set up on a tripod. The camera had about half a battery left and died in the cold (it was in the teens) in short order. In fact, when I went to pick up the camera the next morning, it was completely white with frost. At first I was worried I'd killed it completely because it didn't work, even with a new battery, but I thawed it out over the truck heater and it came back to life, which is a good thing, because a D300 costs about $1,800.