European Southern Observatory

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European Southern Observatory
Formation 1962
Type research organization for astronomy
Membership 14 member countries
Website www.eso.org

The European Southern Observatory (ESO, officially called the European Organization for Astronomical Research in the Southern Hemisphere), is a research group for astronomy, made up of fourteen countries from Europe. Made in 1962 to give state-of-the-art facilities and a view the Southern Sky to European astronomers, it is well known for using some of the largest and most advanced telescopes in the world, such as the New Technology Telescope (NTT), the telescope that helped create active optics technology, and the VLT (Very Large Telescope), made of four 8-meter class telescopes and four 1.8-m Auxiliary Telescopes.

Member countries[change | edit source]

Member country Joined
 Belgium 1962
 Czech Republic 1 January 2007
 Denmark 1967
 Germany 1962
 Finland 1 July 2004
 France 1962
 Italy 24 May 1982
 Netherlands 1962
 Portugal 27 June 2000
 Spain 1 July 2006
 Sweden 1962
 Switzerland 1981
 United Kingdom 8 July 2002
 Austria 1 July 2008