An all-sky aurora with green and purple curtains, the night of June 7-8, 2014, starting up about 12:30 and going until dawn. This shot was near its peak, from the old barn site near home in southern Alberta. The purple colour is partly from blue scatttered sunlight hitting the red tops of the auroral curtains. Cassiopeia is at upper right. This was with the 16-35mm lens at f/2.8 for 20 seconds at ISO 1600 with the Canon 60Da. It is one frame of 280 shot for a time lapse.
The Amazing Sky 