A dark, moonless sky behind Double Arch in Arches National Park, Utah, with a wash of car headlights providing some highlights to the rocks. High clouds added the natural star glows.
The ground is from a stack of 5 exposures, to reduce noise, each 45 seconds. The sky is from one exposure, at 45 seconds, to minimize trailing, all at f/2.8 with the Rokinon 14mm lens and Canon 6D at ISO 6400. Taken April 7, 2015.
The Amazing Sky 