Orion rising at right, with Sirius, the Dog Star, just clearing the treetops amid the glow of light pollution, while Procyon, the bright star in Canis Minor, shines to the left, having risen before Sirius, thus its name - Pro-Cyon — before the Dog. At upper left are the twin stars of Castor and Pollux in Gemini the Twins. Sirius was rising about 8 pm. The Beehive star cluster, M44, is at the left of frame. Some bands of red airglow add red streaks in addition to the red nebulas in the frame. Taken from home in southern Alberta on a very clear night January 2, 2016. This is a stack of 5 x 2-minute exposures plus another 3 x 2 minute exposures with the Kenko Softon filter to add the star glows, each set Median combined stacked to eliminate aircraft trails. The ground comes from one image. All were tracked, at f/2.8 with the 24mm lens and Canon 5D MkII at ISO 1600.
Circumpolar star trails from latitude +32° from southern Arizona, December 2015, from the Quailway Cottage. This is a stack of 300 exposures, each 45s at f/2.8 with the 15mm full-frame fish-eye lens, and at ISO 2500 with the Canon 6D. Taken as part of a time-lapse sequence. Stacked with Advanced Stacker Plus actions with the Elastic Stars effect. The ground is from an average stack of 8 exposures at the end of the sequence.
A stack of 450 or so images taken during the first half of the night, on December 5, 2015, of the winter stars turning about the North Celestial Pole from Arizona, from the Quailway Cottage near Portal, Arizona. Polaris is near centre. The ground comes an average stack of 8 of the last frames. Stacking performed with the Advanced Stacker Plus actions (using UltraStreaks) in Photoshop. Each exposure was 45 seconds at f/2.8 with the 15mm full-frame fish-eye, and Canon 6D at ISO 2500.
