The Big Dipper above the sandstone formations at Writing-on-Stone Provincial Park, in southern Alberta. I shot this July 31, 2016 on a dark moonless night, with starlight only lighting the foreground. Some green airglow discolours the sky. This is a stack of four images for the ground (to smooth noise) and a single image for the sky (to minimize trailing). All are 45 seconds at f/2.8 with the Sigma 20mm Art lens and Nikon D750 at ISO 4000. All untracked.
The Big Dipper, at left, and Little Dipper with Polaris, centre, over the Hoodoos on Highway 10 along the Red Deer River near Drumheller, Alberta, July 24, 2016. A faint purple aurora lights the sky at upper left, while clouds lit by farm and urban lights provide the unfortunate but in this case complementary coloured yellow sky glow. A nearby farm light illuminates the foreground hoodoo. The waning Moon was just coming up and beginning to light the sky blue as well. This is a 2-panel panorama, vertically, to take in more of the sky and ground than possible with a single image, even with the 20mm lens used here. The sky is a 30-second exposure at f/2.2 while the ground is a stack of 3 x 2-minute exposures at f/4.5 for more depth of field. All with the Nikon D750 at ISO 3200. No tracking here.
Noctilucent clouds at 3 am on June 27 over a prairie pond in southern Alberta. The NLCs were visible as an arc across the north for at least 2 hours and were still there as dawn twilight brightened at 3:30 am. This is looking due north with the stars of the Big Dipper at upper left. Capella is at lower right. Shot with the 20mm lens.
