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Star Trails over Butala Homestead (Dawn).jpg
Circumpolar star trails at dawn over the historic Butala homestead at the Old Man on His Back Prairie and Heritage Conservation Area in southwest Saskatchewan, taken May 2015. This is a stack of 70 frames from a larger time-lapse sequence, from the end of the sequence in the dawn twilight. Each exposure is 40 seconds with the 14mm lens at f/2.8 and Canon 60Da at ISO 1600. Stacked with Advanced Stacker Actions. The foreground comes from a stack of 8 of the final exposures, mean combined, to smooth noise.