Aurora display early on the night of May 17-18, 2013, taken from near home at the old farmstead, and exhibiting unusual high altitude blue curtains, likely lit by sunlight. The sky is still lit by twilight and also by moonlight. This is an 11-second exposure at f/4 and ISO 1600 with the 10-22mm lens and Canon 60Da. It is one frame from an 1100-frame time-lapse sequence.
The Amazing Sky 