Time-lapse photography is very cool to do, but fairly difficult. It requires a lot of patience, and the willingness to spend hours with your camera pointed at one subject without knowing whether or not your photos will turn out until it’s all said and done. Astrophotography is an easier form of time-lapse (at least in my opinion) but it still takes a lot of patience and time.
This clever fellow took a series of twenty second exposures over a nine hour time frame, and then stacked them together to make a video. He used a modified Canon 5D with a 15mm fisheye lens, and I would assume some type of external power supply since 9 hours is a long time to run on the stock battery pack. It’s quite stunning and well worth your time to watch it in it’s entirety. Having tried to do this myself in the past, I can tell you that it’s not as simple as it looks.