The Big Dipper in deep sunset twilight over Reesor Lake in the Cypress Hills of southeast Alberta. Taken July 28, 2017. This is a single exposure with the 20mm Sigma Art lens (13 seconds at f/2/2) and Nikon D750 (ISO 100).
The great all-sky aurora of the night of May 27/28, 2017, shot from home in southern Alberta looking north toward the auroral oval. The brightest curtain is fringed with pink from glowing nitrogen. Above, the aurora is exhibiting a typical post-substorm patchiness and pulsating, with patches of green ad blue covering the sky. With the oncoming morning twilight, the sky and aurora is beginning to look more blue. The Big Dipper is at left. Notice the sharp-edged dark bands at upper right. Dark aurora? This is a stack of 8 exposures for the ground to smooth noise, and one exposure for the sky, all 1.6-second exposures at f/2.8 with the 12mm Rokinon full-frame fish-eye lens and Nikon D750 at ISO 3200. Shot as part of a time-lapse sequence.
The great all-sky aurora of the night of May 27/28, 2017, shot from home in southern Alberta looking north toward the auroral oval. The brightest curtain is fringed with pink from glowing nitrogen. Above, the aurora is exhibiting a typical post-substorm patchiness and pulsating, with patches of green ad blue covering the sky. The Big Dipper is at left. This is a stack of 8 exposures for the ground to smooth noise, and one exposure for the sky, all 1.6-second exposures at f/2.8 with the 12mm Rokinon full-frame fish-eye lens and Nikon D750 at ISO 3200. Shot as part of a time-lapse sequence.
