Blue Mesa Observatory (BMO), also referred to Magdalena Peak Station for the International Planetary Patrol Program, was an astronomical observatory owned and operated by New Mexico State University (NMSU).

[1][2][3] The site and the 30 acres (0.047 sq mi; 0.12 km2) surrounding it were conveyed to the Federal Aviation Administration, which tore down the observatory building and replaced it with a radar installation.

[4] BMO's main telescope was a 0.61 m (24 in) Cassegrain reflector built by Astro Mechanics and installed in 1969.

[5] It was equipped with a Boller and Chivens spectrograph, a spectrophotometer, and a photoelectric photometer.

After BMO closed, the telescope and instruments were acquired by Pittsburg State University (PSU) in 1993.