Photography: David Hartwell
The Kitt Peak National Observatory (KPNO) is a United States astronomical observatory located on Kitt Peak of the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono O’odham Nation, 88 kilometers (55 mi) west-southwest of Tucson, Arizona. With 22 optical and two radio telescopes, it is the largest, most diverse gathering of astronomical instruments in the northern hemisphere. The observatory is administered by the National Optical Astronomy Observatory (NOAO).
All Photographs © 2018 David Hartwell