Giant Magellan Telescope Inks Key Construction Contract, Eyes 2029 '1st Light'

October 30, 2019

The world’s largest optical, land-based telescope is entering its design and construction phase. Slated for Las Campanas Observatory in Chile’s Atacama Desert at 8,500 ft./2,550m, the Giant Magellan Telescope (GMT) will have an 80ft./24.5m diameter mirror (actually seven giant mirrors) that will help astronomers to investigate black holes, dark matter and dark energy.