President John Quincy Adams, who in 1825 signed the bill for the creation of a national observatory just before … See more

In 1990 two departments were established: Orbital Mechanics and Astronomical Applications, with the Nautical Almanac Office a division in Astronomical Applications. The Orbital Mechanics Departmen… See more

The U.S. Naval Observatory operates two “Master Clock” facilities, one in Washington, DC, and the other at Schriever SFB near Colorado Springs, CO.
• The primary facility, in Washington, D.C. maintains 57 … See more

The United States Naval Observatory Instrument shop has been designing and manufacturing precise instrumentation since the early 1900s. See more

• Astronomical Observations made at the U.S. Naval Observatory (USNOA) (v. 1–6: 1846–1867)
• Astronomical and Meteorological Observations made at the U.S. Naval Observatory (USNOM) (v. 1–22: 1862–1880)… See more

Astronomy and observatories
• dark-sky movement
• List of astronomical observatories
• The Old Naval Observatory
• USNO Flagstaff Station… See more