A strange red/magenta auroral arc overhead across the sky, with a more normal green diffuse glow to the north, as seen on May 10, 2015, in a stack of 80 frames taken over 45 minutes. The Big Dipper is overhead in the centre of the frame, Jupiter is at left in the west and Arcturus is at top to the south. I shot this from home, using an 8mm fish-eye lens to take in most of the sky, with the camera looking north. The 80 exposures were stacked and blended with Advanced Stacker Actions from StarCircleAcademy.com using the Long Trails effect. Each exposure was 32 seconds at f/3.6 and ISO 3200 with the Canon 6D. An individual exposure adds the more point-like stars at the start of the tapered star trails, and add the blue from the last twilight glow still illuminating the sky at the start of the sequence.
A circumpolar star trail composite, shot at the old Larson Ranch site in the Frenchman Valley at Grasslands National Park, Saskatchewan, August 27/28, 2014. The pioneer cabin was the home of the legendary western author and movie star Will James, born Ernest Dufault in Quebec. He lived in this cabin when he worked the ranches in the area. The aurora was excellent this night. This is a stack of 20 1-minute exposures at ISO 2500 with the 15mm full-frame fish-eye lens at f/3.2 and the Canon 6D. The foreground and point-like stars are from the first frame in the series.
