Just a hint of northern lights last night over the Pigeon River in Grand Portage, MN. I went out to spend the night photographing the Milky Way but was pleasantly surprised in this photo to see a little bit of aurora action going on. Some faint purple and green colors low on the northern horizon mixed in with some slight light pollution from the city of Thunder Bay, Ontario which is about 40 miles away. This photo was made at 11:40 PM with an exposure length of 30 seconds, aperture of f/2.8 and ISO 3200.
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