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Star Rain - Big Dipper Comet Trails (July 12, 2013).jpg
A cummulative star trail of northern stars around the Big Dipper, created with a stack of images from a time-lapse sequence, and stacked with StarCircleAcademy Advanced Stacker Actions - Comet Trails, which stacks a series of consecutive images at decreasing opacity. A neat effect. Each image was a 30 second exposure at f/2 with the 24mm lens and Canon 5D MkII at ISO 1600. Taken from Ressor Ranch, July 12, 2013. A faint aurora tints the sky magenta.