An observatory at an altitude of 2788 m in the Sacramento Mountains near Sunspot, New Mexico. It houses a 3.5-m reflector opened in 1994; a 2.5-m reflector built for the Sloan Digital Sky Survey which began operation in 1998; and a 1-m reflector owned by New Mexico State University. The observatory is owned by the Astrophysical Research Consortium (ARC), whose members are the University of Chicago, the University of Colorado, Johns Hopkins University, Princeton University, the University of Virginia, the University of Washington, and New Mexico State University; the last-named also operates the observatory for the Consortium.
http://www.apo.nmsu.edu/ Official observatory website.
Subjects: Astronomy and Astrophysics.