This was an early experiment with the 4×5 camera, taken back in January 2006 in the foothills above Boulder. I first exposed the film for a few minutes to record the city lights, then I covered up the bottom portion of the frame using a thin piece of cardboard cut to fit in my cokin filter holder. With the camera in the same position and the city lights blocked out to prevent overexposure, I left the lens open for several hours to capture the star trails.

It’s hard to see at web resolution, but on the center horizon are a bunch of light trails from airplanes taking off from Denver International Airport.