The evening of 23 September 2017 was the last night of the 2017 Flagstaff Star Party. Flagstaff is the first international dark sky city and this is the fourth year the star party was hosted in the midst of the city at Buffalo Park. This time lapse sequence was shot while I was assisting at a Night Sky Photography Workshop led by Stan Honda. About 8 seconds into the video, the International Space Station can be seen quickly ascending from the southwest horizon before fading into Earth’s shadow toward the top of the frame. The lights of downtown Flagstaff, a little over a mile to the south, light the horizon beneath the Milky Way.
Each exposure in the sequence is 20 seconds in length with a 4 second gap between exposures. They were shot with a Canon 600D/T3i and Rokinon 16mm f/2, processed in Lightroom and edited in After Effects.