This is a time-lapse movie grabbed over a whole night.
The speed is approx 5,000 times faster.
The recording started on 08:33 PM of Friday November 16, 2007 and ended with the first light of the dawn on 06:33 of Saturday November 17, 2007.
That was a very lucky night : no wind, no dew, no ice disturbed the continuous grabbing and the sky conditions were very stable.
If you can't see the video maybe you need the DiVX codec. Download it for free at : http://www.divx.com