Astrophysics (Index)About

European Extremely Large Telescope

(E-ELT, ELT, EELT, Extremely Large Telescope)
(39-meter telescope under construction)

The European Extremely Large Telescope (E-ELT, officially renamed the Extremely Large Telescope or ELT) is a 39.3-meter adaptive optics, segmented-mirror-reflecting extremely large telescope under construction by the European Southern Observatory on top of Cerro Armazones, Chile (altitude: 3046 meters), in the Atacama Desert. When done, it will be the largest optical telescope ever, by a substantial margin, able to carry out unprecedented observations. It is a new site, about 1 km from the existing Cerro Armazones Observatory, but it will be operated out of ESO's Paranal Observatory, which is about 20 km distant. Ground construction began in 2017 and as of 2023, first light is targeted for 2028. Some instruments under development:

Some concepts published in the past (likely canceled, subsumed, renamed, or postponed):


(telescope,reflector,ELT,ESO,ground,Chile,construction,European)
Further reading:
https://en.wikipedia.org/wiki/European_Extremely_Large_Telescope
http://www.eso.org/sci/facilities/eelt/
https://ui.adsabs.harvard.edu/abs/2018sf2a.conf....3N/abstract
https://ui.adsabs.harvard.edu/abs/2007Msngr.127...11G/abstract

Referenced by pages:
ACe consortium
Atacama Desert
Colossus Telescope
European Southern Observatory (ESO)
extremely large telescope (ELT)
HARMONI
MICADO
monolithic mirror
Overwhelmingly Large Telescope (OWL)
Paranal Observatory
reflector telescope
segmented mirror
three-mirror anastigmat

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