A classic auroral arc across the northern sky, from home in southern Alberta. This was January 4, 2019. Polaris, marking due north, and the Little Dipper lie high and to the left of centre here. The Big Dipper is low on the horizon at centre. This is a single 15-second exposure with the Laowa 15mm lens at f/2 and Sony a7III at ISO 800.
The arc of the classic auroral oval across the northern sky, from home in southern Alberta. This was January 4, 2019. The oval is centered on a point east of due north, as from my location magnetic north lies offset about 13° east of due north. Polaris, marking due north, and the Little Dipper lie high and to the left of centre here. The Big Dipper is low on the horizon at centre. This is a single 20-second exposure with the Laowa 15mm lens at f/2 and Sony a7III at ISO 1600.
A passage of the International Space Station high across the north in the late blue hour of twilight, with the stars appearing, though the ISS outshines them all. This was the 5:17 pm pass on December 6, 2018 from southern Alberta, and taken with a fixed camera on a tripod, so the stars are trailing slightly as the rotate about Polaris at lower centre. The view is looking north though the fish-eye lens takes in much of the sky. The Big Dipper skims low across the north at botton. On board was Canadian astronaut David Saint-Jacques on his third day in space of a 6-month mission. This is a stack of 21 10-second exposures at f/3.5 with the Sigma 8mm lens and Canon 6D MkII at ISO 400. The one-second interval between exposures adds the gaps.
