NOTICE TO OUR USERS

Under direction of the Chief of Naval Operations, the nature of the U.S. Naval Observatory's web site is changing from its traditional appearance to a portal which combines all of the Navy Oceanography Community's products and services.

As of 15 January 2009, the U.S. Naval Observatory's products and services will continue to be available at http://www.usno.navy.mil, but will be part of a larger portal. DoD customers are directed to our NIPRNet site at https://oceanography.navy.mil.

Questions or comments can be submitted here.

USNO logo
 
Features
> Home
> About
> History
> Instrument Shop
> Internal Page
Projects
> Double Stars
> OBSS
> FAME
> FTS
> ICRF
> UCAC
> VLBI
Catalogs
> Recommended
> AC2000
> ACT
> CPC2
> CPIRSS
> Double Stars
     -WDS
     -Orbit
     -Interferometric
     -Delta M
> ERLcat
> NOMAD
> OID
> RORF
> RRFID
> TAC
> Tycho-2
> UCAC2
> VLBI
Miscellaneous
> Astronomy Events
Naval Meteorology and Oceanography Command U.S. Naval Observatory
Friday March 19, 2010
Home About History Instrument Shop Telescopes
The Astrometry Department of the U.S. Naval Observatory (USNO) is responsible for the determination of the positions and motions of stars and solar system objects and the establishment of celestial reference frames. Advanced equipment and methods, such as large scale CCD measuring devices, speckle and radio interferometry, are being used or developed to extend the accuracy and brightness limits of the reference frames. The results of the observational programs are published in the Naval Observatory Publications and in refereed journals. This work is done in cooperation with the United States Navy, the Department of Defense, other United States agencies, organizations in other countries and the International Astronomical Union.

Please read this Privacy and Security Notice and this Disclaimer for External Links.
This is an Official U.S. Navy Web Site Need Help?