An aurora display appears to the right of Pyramid Mountain and over Pyramid Lake, in Jasper National Park, Alberta on Oct 24/25, 2015. This is one frame from a 600-frame time-lapse sequence. Exposure was 15 seconds at f/4 and ISO 800 in the bright moonlight, with the Nikon D750 and 24mm Sigma lens.
The Big Dipper over Pyramid Mountain at Pyramid Lake, Jasper National Park, Alberta, on Oct 24, 2015. Illumination is from a waxing gibbous Moon. This is a stack of 4 exposures, mean combined, for the ground to smooth noise with one of the exposures adding the sky, to prevent trailing. Each was 15 seconds at f/4 and ISO 800 with the Nikon D750 and Sigma 24mm lens.
The Milky Way in Sagittarius (toward the galactic centre) going down behind the badland hills along the Red Deer River. I shot this near East Coulee on Highway 10 in Alberta, on an autumn night. Some clouds were drifting through over the exposure times. Passing car headlights helped light the trees on the opposite bank. This is a stack of 4 tracked exposures for the sky (each 2 minutes at f/2.2 with the 24mm lens) and then 4 untracked exposures for the ground (each 4 minutes at f/2.5), all with the Canon 6D at ISO 800. The tracker was the iOptron Sky-Tracker. Stacking, using Mean stack mode, helps smooth noise. This was shot as a demo image for use in a video tutorial series.
