A 360° panorama of the late winter and early spring sky with an arc of aurora, from a latitude of 51° N. This was March 13, 2021, from home in southern Alberta. This night there was a bright aurora across the northern sky, so I have oriented the view to place due north just right of centre. The Big Dipper is at right; Leo is rising at far right. The bright winter stars around Orion are at far left to the south. High clouds and haze, partly lit by light pollution here, add the natural glows to the stars, emphasizing the bright stars and constellation patterns. No filter was used here. The yellow arch at left is a band of cloud illuminated by light pollution. This was a test of new panorama gear, using an Acratech Pan Head on top of a Alyn Wallace/MSM Z-Plate mounted to a Sky-Watcher Star Adventurer 2i tracker, to allow taking tracked segments for the panorama, to prevent star trailing. The Z-Plate allowed the Pan Head to mount and move horizontally and vertically in azimuth and altitude despite being on a polar aligned tracker. It worked! The ground is a stitch of 8 segments shot with the tracker motor off, then blended with a stitch of 20 segments for the sky, in 3 tiers of 8 + 6 + 6 segments, all with the Sigma 24mm lens at f/2.8 and for 1-minute with the Nikon D750 at ISO 1600 for all shots. Stitched with PTGui v12 which at last saves camera metadata when exporting PSD files. The original is 25,600 pixels wide.
A 360° panorama of the entire late winter/early spring sky from northern latitudes, with the winter Milky Way stretching across the sky, from south (at left) to north (at right). West is at centre. Orion and the northern winters stars are left of centre to the southwest. Just below the prominent Pleiades cluster at centre is Mars, then near the Pleiades in early March 2021. To the far left in the eastern sky the spring stars are rising. The Beehive star cluster stands out to the left of the Milky Way,. The Big Dipper is at upper right. Arcturus is rising at far right just above the horizon. Sirius is above the southern horizon left of centre. The faint glow of Gegenschein is at far left below Leo, opposite the Sun. I shot this from home on March 7, 2021 on a very clear night with no aurora to the north. This is from a latitude of 51° N. This is a stitch of 21 segments, in 3 tiers or rows of 7 segments each, with the Sigma 24mm Art lens at f/2 and Canon EOS Ra camera at ISO 1600. Exposures were 30 seconds each, all untracked. The camera was moved automatically from frame to frame by placing it on the Sky-Watcher AZ-GTi motorized alt-azimuth mount, programmed with the hand controller from the old Sky-Watcher All-View mount. Stitching was with PTGui using equirectangular projection. The original is 28,000 by 8,000 pixels.
A 360° panorama of the entire later winter/early spring sky from northern latitudes, with the winter Milky Way stretching across the sky, from south (at bottom) to north (at top). Orion and the northern winters stars are at bottom to the southwest. Just below the prominent Pleiades cluster at right is Mars. To the left in the eastern sky the spring stars are rising. I shot this from home on March 7, 2021 on a very clear night with no aurora to the north. South is at bottom; north is at top. East is to the left; west is to the right, toward the major source of light pollution. Polaris is at top centre; the Big Dipper is at upper left. Arcturus is rising at left. Sirius is at bottom, above the southern horizon. This is from a latitude of 51° N. This is a stitch of 21 segments, in 3 tiers or rows of 7 segments each, with the Sigma 24mm Art lens at f/2 and Canon EOS Ra camera at ISO 1600. Exposures were 30 seconds each, all untracked. The camera was moved automatically from frame to frame by placing it on the Sky-Watcher AZ-GTi motorized alt-azimuth mount, programmed with the hand controller from the old Sky-Watcher All-View mount. Stitching was with PTGui. The original is 17,000 by 17,000 pixels.
