Gala event celebrates 50 years of the European Southern Observatory

Representatives of the Member States of the European Southern Observatory (ESO) and its host nation Chile, among them seven ministers and two ambassadors, and representatives of the observatory itself, signed a prototype mirror segment of the European Extremely Large Telescope during a gala event that marked the 50th anniversary of ESO. The event took place in the evening of 11 October 2012, in the Kaisersaal of the Munich Residenz in Germany.