Eric, I think you're right on for the most part. I believe Adam's zoom was an older Pentax lens. By the way, I really liked some of those shots you took with the 50/2. Very pleasant rendering from that lens (and of course, nicely composed photos!).
I was hoping at least one of Adam's star trail photos would make it on here (holding out hope, hint hint, Adam) but the other night shots were really cool.
Tony, I'm sold on the NEX. The 5N is the latest and greatest in the "5" line, and to be fully honest it keeps up with my Canon 5D SLR as far as sensor performance, in some respects it surpasses it (and even the new 5D Mark II) - which is saying a lot IMO. Walking into camp and seeing 2 other NEX's right away, I knew I must have made a good choice if it was approved by other BPL'ers :) I was honestly a little surprised that I got as many keeper shots as I did since I only had the camera and lens a few days prior to the trip and was not working at my preferred focal length (35mm, I was shooting at 60mm most of the time). The 18-55 kit lens is also quite good as far as I'm concerned, and not heavy. With the strap that I made, the camera was always right there ready to go and never bothered me while walking.
I will post a full report on it later (not on this thread).