Mount Lemmon Observatory, Mount Lemmon

Mount Lemmon Observatory, also known as the Mount Lemmon Infrared Observatory, is an astronomical observatory located on Mount Lemmon in the Santa Catalina Mountains approximately 28 kilometers northeast of Tucson, Arizona. The site in the Coronado National Forest is used with special permission from the U.S. Forest Service by the University of Arizona's Steward Observatory, and contains a number of independently managed telescopes. ()