diameter. The first segment is under construction as of August 2022. See also Atacama Desert Extremely Large Telescope Gran Telescopio Canarias List of largest optical reflecting telescopes List of optical telescopes Magellan Telescopes Thirty Meter Telescope References External links Giant Magellan Telescope home page Lecture by director Patrick McCarthy on technologies behind GMT Article from the MIT news office New Scientist article on the telescope COSMOS article on the telescope Painted outline of the mirrors at the parking lot of the Observatories of the Carnegie Institution in Pasadena J. Rosenberg - Seeing Stars (2013) - Harvard Magazine J. Davis - Making mirrors for the Giant Magellan Telescope (2013) - The Planetary Society Optical telescopes Telescopes under construction Astronomical observatories in Chile