United States Naval Observatory Flagstaff Station

The United States Naval Observatory Flagstaff Station (NOFS), is an astronomical observatory near Flagstaff, Arizona, USA. It is the national dark-sky observing facility for the U.S. Department of Defense, under the United States Naval Observatory (USNO). NOFS and USNO combine as the Celestial Reference Frame manager for the U.S. Secretary of Defense.

Read more about United States Naval Observatory Flagstaff Station:  General Information, Site Description, Instruments, Navy Precision Optical Interferometer, Gallery

Other articles related to "united states, naval":

McDonnell Douglas F-4 Phantom II - Operational History - United States Air Force
... the F-4 was initially designated the F-110 Spectre prior to the introduction of the 1962 United States Tri-Service aircraft designation system ... Unlike the Navy, which flew the Phantom with a Naval Aviator (pilot) in the front seat and a Naval Flight Officer as a radar intercept officer (RIO) in the back seat ... Naval and Marine losses of 233 Phantoms, 761 F-4/RF-4 Phantoms were lost in the Vietnam War ...

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