US Naval Observatory photograph

US Naval Observatory

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Address10391 W Naval Observatory Rd, Flagstaff, AZ 86001, United States
Opened 1955
Phone +1 928-779-5132
Navy Precision Optical Interferometer Anderson Mesa
Kaj Strand Telescope1. 55 m (61 in) reflector
Date of Reg.
Date of Upd.
ID2153707
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About US Naval Observatory


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

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