I'm pretty much a complete n00b at star photos, but I tried my hand at a couple stacked exposures on Kilimanjaro. I'm pleased with the results but they're really not nearly as clean as some of the shots I see from others, and I'm really at the phase of stumbling around with curves/levels/color adjustments until I find something I like, rather than really having a solid process. Both were 20x exposures @ 20 seconds each, stacked using Deep Sky Stacker and then pulled into Photoshop for adjustments. The lights on the first one are from a city below the mountain - mists were slowly rising as I took the exposures, so each one was slightly lighter than the previous. When I first saw the light, I thought the shots were ruined but I think it turned out nicely.