The Big Dipper over the iconic Castle Mountain in Banff National Park, Alberta, with a backdrop of a faint aurora in the northern sky. This was at 3
The Big Dipper over the iconic Castle Mountain in Banff National Park, Alberta, with a backdrop of a faint aurora in the northern sky. This was at 3 am on July 16, 2018, and taken from the Castle Cliffs viewpoint on the Bow Valley Parkway. The sky was also brightening with dawn twilight blue. This is a stack of 8 exposures for the ground, mean combined to smooth noise, and one exposure for the sky. All 30 seconds at f/2 with the Sigma 24mm Art lens, and Nikon D750 at ISO 3200. LENR dark frame subtraction applied in camera.
Size: 5400px × 3605px
Photo credit: © Alan Dyer / VWPics / Alamy / Afripics
License: Licensed
Model Released: No
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