Giant Magellan Telescope
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The Giant Magellan Telescope is a ground-based, extremely large telescope currently under construction at Las Campanas Observatory in Chile's Atacama Desert. With a primary mirror diameter of 25.4 met
The Giant Magellan Telescope Exterior Illustration
An aerial view of the Giant Magellan Telescope construction site.
Giant Magellan Telescope rendering
Light path on GMT
Extremely Large Telescope
Videos
The Extremely Large Telescope is an astronomical observatory under construction. When completed, it will be the world's largest optical and mid-infrared extremely large telescope. Part of the European
Giant Magellan Telescope
…extremely large telescopes with each design being much larger than existing ground-based telescopes. Other planned extremely large telescopes include the Extremely Large Telescope and the Thirty Meter Telescope. The Giant Magellan Telescope is the work of the GMTO Corporation, an international consortium of research institutions…
Artist's impression of the ELT
ESO Council meets at ESO headquarters in Garching bei München, Germany, 2012.
ELT construction status in April 2026
Cerro Armazones at night (2010)