A panorama of the arc of Northern Lights seen August 26, 2019 about 11:30 p.m. CST from Grasslands National Park, Saskatchewan, from the Two Trees Road. This is looking northeast. The Big Dipper is at far left. Capella is the bright star above the arc, while Perseus is at upper right. The Pleiades are rising at right, above the silhouette of 70 Mile Butte. This was a diffuse grey arc to the eye but the camera picks up the green and red colours from the oxygen emission lines. This is a 5-segment panorama with the 24mm Sigma Art lens at f/2 and Nikon D750 at ISO 3200 for 20 seconds each. Stitched with Photoshop.
A 220° panorama of the northern autumn constellations rising in the east at right, and the northern stars, including the Big Dipper at far left. From left to right, we see Ursa Major, Ursa Minor, Perseus, Cassiopiea, Cepheus, Andromeda, Pegasus, and Aquarius rising above Eagle Butte at Grasslands National Park. The Andromeda Galaxy, M31, is at centre. This was August 26, 2019. Lights from towns to the north of this Dark Sky Preserve light the northern horizon. However, green natural airglow does discolour the sky. The constellation patterns are a little distorted by the panorama projection geometry. This is a stitch of 13 segments, each with the 24mm Sigma lens at f/2 and Nikon D750 at ISO 6400, in portrait orientation, for 30 seconds each, and at 15° spacings. Stitched with ACR.
