Took this photo between 1:30am and 3:30am in Arches National Park this past weekend. I don't think the full exposure was 2 hours because when I got back to my camera, the battery was completely dead, but it was around an hour or so.
In case you were wondering, I haven't done any photoshop editing to this photo. That is the color that my camera captured of the night sky.
Here's the nerdy information behind this photo:
58 Minute exposure at f/3.5 - ISO: 200