Mars (at left) and the galactic centre area of the summer Milky Way low over the southern horizon at Writing-on-Stone Provincial Park, Alberta, on June 8/9, 2018. Sagittarus is at centre, with Scorpius at right. The Messier 6 and 7 open star clusters are just above the horizon at centre, just right of the Sweetgrass Hills on the horizon in Montana. This is a stack of 12 exposures for the ground, mean combined to smooth noise, and 1 exposure for the sky, all 30 seconds at f/2 with the Laowa 15mm lens on the Sony a7III camera at ISO 6400. These were the last frames in a 340-frame time-lapse sequence. At this time of year, the sky is always bright with deep blue perpetual twilight.
The summer Milky Way rising in the late night hours on May 14/15, 2018 from Dinosaur Provincial Park, Alberta. The galactic centre is at right; the Summer Triangle stars at left. A faint band of green airglow is across the south at right. This is a stack of 2 x 90-second exposures for the ground, to smooth noise, and at f/2.8 for better depth of field, plus a single 30-second untracked exposure at f/2 for the sky, All with the Laowa 15mm lens and Sony a7III camera at ISO 3200.
A 240° panorama of a not very active display of Northern Lights to the north (left of centre), then sweeping around to the south (at right) and the winter stars of Orion and Canis Major. Sirius is bright and in some cloud, accentuating its size and colour. Leo is rising at centre. The Big Dipper and Ursa Major are left of centre. The Milky Way appears at far left, in the area of Perseus and Cepheus, and again at far right through Monoceros and past Orion and Canis Major. The aurora display the characteristic green and red curtains from oxygen, but there is also a dim red curtain at left (northwest) and at centre (east) south of the main curtain and separated. It looks like a dim Steve arc but this was not visible to the eye and never became well formed or bright. This is a stitch of 8 segments with the 14mm Sigma Art lens, at f/2 for 13 seconds each, and Nikon D750 at ISO 3200. Stitched with Adobe Camera Raw. Taken from home January 13, 2018. The constellations are distorted slightly by the panorama projection and warping. I began a time-lapse after this, but clouds rolled in from the northwest.
