On a rafting trip through the Grand Canyon in March-April, 2016, I captured images of the sky that I assembled into time-lapse videos. On clear nights, I set up my camera on a tripod and recorded two photographs each minute for several hours through the night. Audio was added later.
Canyon walls were illuminated by moonlight when the moon was up. The rapid streaks you see are airplanes flying over the canyon.
See the Equipment for Time-lapse Imaging page to see details about camera and power supply.
For highlights of our rafting trip, check out the video Running the Colorado on YouTube.