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Mount Graham International Observatory (MGIO)




A division of Steward Observatory, the research arm for the Department of Astronomy at the University of Arizona. MGIO is at a height of 3,260 m on Mount Graham near Safford, Arizona, 125 km northeast of Tucson. Two telescopes are in operation: the Vatican Observatory/Arizona 1.8-m Lennon telescope (VATT) and the 10-m diameter Heinrich Hertz Submillimeter Telescope (SMT), a joint project of Arizona and the Max-Planck-Institut für Radioastronomie, Germany. The Large Binocular Telescope, one of the biggest in the world, is under construction.


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   • OBSERVATORIES AND TELESCOPES