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Aurora over the Brooks Range mountains. Canon 5D Mark III, Rokinon 24mm f/1.4, 3.2 sec @ f/1.4, ISO 1250.

While the clouds and snow were abundant during a recent photo tour I was guiding in Alaska’s arctic, the skies opened up and poured out the green cascading curtains of the northern lights along with chilly air that dipped to -34 below at the coldest hour of the night. The aurora show went on for multiple hours with many great shimmering displays. I used the Rokinon 24mm f/1.4 to capture this image, and the short shutter speed of 3.2 seconds allowed for some definition in the many shapes that were undulating and changing quickly.

Snowshoe hare on the snow in willow thickets. Canon 5D Mark III, 500mm f/4L II IS, 1/800 sec @ f/5.6, ISO 400, hand held.

I’ve just returned from another successful aurora photo tour into Alaska’s arctic, but to give a little break from aurora pictures, which I’ve been posting a lot of lately, here is a little creature of the boreal forest that takes shelter from its predators in the shrubby willow thickets. The snowshoe hare turns white in winter, and uses this cryptic pelage to camouflage itself among the snow. During the day they rest in the thickets, which makes getting a clear shot at them difficult. This was one of the rare frames free of brush clutter. During the tour we had a lot of snow and cloudy weather, but fortunately some aurora also. Thanks to Alaska in general, there is always something interesting to photograph across its great landscape.

Home sweet home for a night in the White Mountains. I took this photo on March 17th in Alaska’s interior during an amazing aurora display. The cozy feel of this cabin situated in the mountains with the aurora dancing overhead renders the most classic iconic Alaska scene.


Colorful aurora corona, interior, Alaska. Canon 5D Mark III, 14-24mm f/2.8 Nikkor, 5 sec. @ f/2.8, ISO 1600. Taken at 1:41 a.m. on 3/18/2013

The colors revealed in aurora borealis photography are often not what the human eye observes. The camera sensor’s sensitivity in conjunction with the data collected over a mulit-second exposure result in some stunning and colorful aurora displays should the solar output be strong enough. In my recently published eBook on How to Photograph the Northern Lights, Neal Brown, the director of Alaska Science Explained writes a brief description of the aurora colors:

The colors of the aurora change depending on which sun storm electrons and protons collide with which atoms and molecules in the earth’s atmosphere. The green light and the deep, broad red color that often occur high in aurora appear when electrons collide with atoms of oxygen. The bluish-tinged vertical rays in the aurora appear when electrons impact singly ionized molecules of nitrogen. The brighter lower borders of some aurora appear when electrons impact molecules of nitrogen and oxygen, and may briefly appear magenta in color. A faint broad band of blue that runs from magnetic east to west, and just south of the greenish aurora, appears when protons impact hydrogen atoms in the earth’s high upper atmosphere.

The night of March 17, 2013 unveiled a great aurora show with a KP index of 6, which is high solar activity, meaning the aurora oval was extended to far southern latitudes. Along with that, came a lot of colors in the aurora filled sky.

Magenta and red aurora over the White Mountains National Recreation Area, interior, Alaska. Canon 5D Mark III, Zeiss 21mm f/2.8, 13 sec @ f/2.8, ISO 1600. No vibrance or saturation added to this photo!

Me watching an aurora corona display in Alaska’s interior. Canon 5D Mark III, Nikkor 14-24mm f/2.8, 13 sec. @ f/2.8, ISO 1250.

If you follow aurora borealis activity at all, you have likely seen many pictures already posted on the web from the explosive northern lights display on March 17th. I was in Alaska’s backcountry on a ski trip, and spent a long night watching and photographing that amazing and colorful display. While I’m a little blurry in this photo, it was my self portrait attempt in the absence of any models.