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.
A dim arc of aurora below the constellations of Ursa Minor (at top left below Polaris) and Ursa Major (at centre), with the Big Dipper most prominent at centre. A stack of 3 x 15 second exposures for the ground to smooth noise, and a single 15-second exposure for the sky, all at f/2 with the 14mm Sigma Art lens and Nikon D750 at ISO 3200. Taken from home January 13, 2018. Star diffraction spikes added with Astronomy Tools actions.
The Big Dipper dipping below the Badland hills on a late autumn or early winter evening at the Hoodoos in the Red Deer River valley near Drumheller, Alberta. Illumination is from the waxing gibbous Moon. A stack of 4 exposures for the ground to smooth noise and a single exposure for the sky, all 10 seconds at f/2.8 with the 24mm lens and Nikon D750 at ISO 800.
