This timelapse video shows the Gran Telescopio Canarias, world's largest reflecting telescrope at work. While the sun is going down, the sky and the clouds get colorized in spectacular colors for a short time, but then the stars rise. Just a few moments later you can see all the stars and the milkyway. After the last clouds disappeard, the milkyway takes part in the game. A nice detail to notice: When the sun rises again, the Roque de los Muchachos throws it's shadown onto the layer of clouds in the front!
