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Aurora in the late evening twilight | by quayman
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Aurora in the late evening twilight

I was out checking the focus on my trusty 24mm lens, and noticed an ark on the northern horizon. After a few minuets some rays developed, with blue/purple in the upper portion, typical of sunlit aurora. Composed of 2 images, taken around 2227 UT, f2.5, 800 ISO, 25 second exposures.

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Taken on August 18, 2012