This was taken on 11/09/2012 from the Parador Canadas del Teide, Tenerife at an altitude of 2150 metres, using a Canon EOS 600D with a Samyang 14mm. F2.8 very wide angle lens on a Polarie equatorial driven mount.
The exposure was a single shot of 49 secs. at ISO 1600. Enhanced with Photoshop Elements 10.
We arrived in the late evening very tired after the long journey and the difficult drive up the mountain through cloud and occasional drizzle. At the top it was so clear that I felt I must get some photographs taken in case this was the best night. I thought that this exposure had been spoiled as a solitary car came along the road with its headlights blazing. Fortunately, the final result was good, as the lights illuminated the Chapel and nearby hills briefly enough to get the foreground exposed correctly and not blurred by the movement of the mount.