Aurora Borealis - Proton Arc
Taken by Dylan M on August 16, 2015 @ Oroville, Washington
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On the last night of the Table Mountain Star Party on Eden Valley Ranch in north-central Washington state, a bright glow appeared in the North.

This soon broke out into a display of red pillars above the luminous green clouds. Meanwhile, two beams of light grew from the East and from the West, slowly rising and brightening until they met, crossing the Milky Way as bright as a searchlight.

For many at the star party, this spectacular display was their first view of the Aurora!

Nikon D610 24mm f/2.8
1: 30s at f/3.5 ISO 4000
2: 30s at f/3.2 ISO 4000
3: 15s at f/2.8 ISO 6400

Nikon D90 8mm f/3.5
4: 56s at f/3.5 ISO 1600
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The beams are called Proton Arcs. Check the other photos, some other photographers captured them too. These are beautiful!
Posted by andermic011 2015-08-18 02:32:26
Oh just kidding, ignore my description I didnt realize your title had proton arc in t. ANYWAYS BEAUTIFUL PICTURES.
Posted by andermic011 2015-08-18 02:33:44
Your first photo is very nice and illuminating I saw the same proton arc (or similar) on Sunday evening from Smithers, British Columbia, beginning around 11 PM. It appeared to go straight up from the eastern horizon. I first thought the town had a searchlight or a kid was playing with a laser or beam flashlight. But the arc did not move and within a few minutes I realized it must be auroral. It gradually lengthened to overhead and then to the west. Eventually it spread just a little and gradually dissipated. This took about 20-30 minutes. I have seen many auroral patterns, but never this. I did not get a photo.
Posted by wrhelms 2015-08-19 16:32:12
117 thumbs up
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