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 30 seconds at ISO 3200.
Astronomy author and photographer Alan Dyer presents amazing sky sights
The Amazing Sky 