Giant Magellan Telescope

The Giant Magellan Telescope (GMT) is a 24.5 meter adaptive optics, segmented mirror-reflecting extremely large telescope under construction at the Las Campanas Observatory in La Serena, Chile. Mirror construction was active in 2005, site preparation began in 2012, ground construction began in 2015, and first light is expected in 2029. Planned instruments:

• G-CLEF - visible echelle spectrograph.
• GMACS - wide field optical spectrograph.
• GMTIFS - near-infrared integral field unit and AO imager.
• GMTNIRS - infrared echelle spectrograph.
• MANIFEST - fiber positioning system.
• ComCam - commissioning camera.