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.
The stars, Milky Way, and constellations of the northern winter sky, including the Winter Hexagon of bright stars, and the Winter Triangle of Betelgeuse, Sirius and Procyon, in a wide-angle shot from the snowy horizon to Capella nearly at the zenith. Orion is at centre. His Belt point up to Taurus and down to Canis Major and Sirius. The Beehive Cluster is at lower left, while the Pleiades is at upper right. There are deer tracks in the snow. With the 14mm Sigma Art lens at f/2 for 20 seconds at ISO 3200, with the ground a stack of 4 exposures to smooth noise. All untracked. Shot from home January 13, 2018, on a mild winter night at -8° C or so. Diffraction spikes added with Astronomy Tools actions.
