The aurora borealis in a mild display AUgust 26/27, 2014 as shot from Grasslands National Park in Saskatchewan. This is a single frame from a 200-frame time-lapse taken with the Canon 6D and Rokinon 14mm at f/2.8 and for 60 seconds at ISO 5000, making the bright parts of the display overexposed here (shortly after this, as the aurora brightened I cut back the exposure).
The Amazing Sky 