Flickr user Christian Mülhauser captured these amazing pictures of the Aurora Borealis in Norway during the last week of January 2012 & made a really beautiful timelapse of the Northern lights.
Christian says in his Vimeo description: "Last week I was again in Norway for shooting northern lights. This time I was very lucky, there was a lot of activity on the sky especially on the 24 January. The scenes are from Ravnastua, Skoganvarre and Lakselv. The first two days I had a lot of trouble with frozen Cameras. It was -25°C (-13°F) and after 1-2 hours of shooting the lens was frozen. I used a Canon 5D MarkII with ML, a 7D and a 550D with ML. All the scenes were shoot with this 3 lenses: Canon EF 24mm f/1.4 L on 5D, Tokina 11-16mm f/2.8 on 7D and my Samyang 8mm/f3.5 on 550D."