Aurora Above Northern Norway
December 30, 2013
The photo above showing a dramatic display of the northern lights (aurora borealis) was taken shortly after sunset in northern Norway, just a few miles from the Arctic Circle. Shimmering green curtains were visible much of the night. Green colors in auroras are caused by the emission of atomic oxygen that results when energetic particles in the solar wind, guided along magnetic field lines, bombard the Earth's upper atmosphere. The warm light in the foreground is from a fire pan. Photo taken on October 13, 2012.
Photo details: Camera Model: NIKON D600; Lens: 16.0-35.0 mm f/4.0; Focal Length: 16mm (35mm equivalent: 16mm); Aperture: f/4.0; Exposure Time: 10.000 s; ISO equiv: 1600; Software: Adobe Photoshop CS6 (Windows).