California Nebula -
The California Nebula is a diffuse nebula in Perseus. In shape it resembles the US state of California. It is illuminated by the hot star Xi Persei, seen to the right of the nebula in the above photo.
This image was taken on the night of 30 September/1st October 2011. It was taken with a Canon 200mm lens on a Canon 40D DSLR camera. It consists of 14 x10 min sub exposures at iso 800 ( = total exposure time of 2hr 20min) that were stacked in Deep Sky Stacker and processed in Photoshop.