About site: Astronomy/Stars - Astrometry Department, U.S Naval Observatory
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  About site: http://ad.usno.navy.mil/

Title: Astronomy/Stars - Astrometry Department, U.S Naval Observatory The primary purpose of this website is to distribute information related to the positions and motions of the stars and planets, mainly to the Defense community.
Astronomy_162__Stars,_Galaxies,_and_Cosmology Entire Astrophysics course online. Very extensive introduction course to stars.

BBC_Space_-_Stars Five concise articles covering the birth and death of stars, star types, and all the things we "know" from just looking at them

Bright_Star_Catalogue Find data (cross references, positions, proper motions, spectral classes, magnitudes ...) on all stars visible to the naked eye from the BSC, SKY2000, SAO, WDS and GCVS. Stars can be searched by their

Buy_a_Star,_But_It\'s_Not_Yours Article discussing (non)validity of star naming companies.

The_Classification_of_Stellar_Spectra NASA page explaining the colors and classifications (O, B, A, F, G, K, and M) of stars.

The_Constellations_since_1996 Binocular and naked eye guide to the constellations, a data table, and mythology.


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This is now2007.com cache of m/ as retrieved on 2008.11.22 now2007.com's cache is the snapshot that we took of the page as we crawled the web. The page may have changed since that time.
The USNO Astrometry Department USNO logo Features>Home>About>History>Instrument Shop>Internal PageProjects>Double Stars>OBSS>FAME>FTS>ICRF>UCAC>VLBICatalogs>Recommended >AC2000 >ACT>CPC2>CPIRSS > Double Stars     -WDS     -Orbit     -Interferometric     -Delta M>ERLcat>NOMAD>OID>RORF>RRFID>TAC>Tycho-2>UCAC2>VLBIMiscellaneous>Astronomy EventsNaval Meteorology and Oceanography CommandU.S. Naval ObservatorySaturdayNovember 22, 2008HomeAboutHistoryInstrument ShopTelescopesThe Astrometry Department of the U.S. Naval Observatory(USNO) is responsible for the determination of the positionsand motions of stars and solar system objects and the establishment ofcelestial reference frames. Advanced equipment and methods, such aslarge scale CCDmeasuring devices, speckle and radio interferometry, are being used ordeveloped to extend the accuracy and brightness limits of thereference frames. The results of the observational programs arepublished in the Naval Observatory Publications and in refereedjournals. This work is done in cooperation with the United States Navy, the Department of Defense, otherUnited States agencies, organizations in other countries and the International Astronomical Union.Please read this Privacy and SecurityNotice and this Disclaimer forExternal Links.This is an Official U.S. Navy Web SiteNeed Help?
 

The

primary

purpose

of

this

website

is

to

distribute

information

related

to

the

positions

and

motions

of

the

stars

and

planets,

mainly

to

the

Defense

community.

http://ad.usno.navy.mil/

Astrometry Department, U.S Naval Observatory 2008 November

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The primary purpose of this website is to distribute information related to the positions and motions of the stars and planets, mainly to the Defense community.

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