The European Extremely Large Telescope (E-ELT, also called the Extremely Large Telescope or ELT) is a 39.3 meter Adaptive Optics (AO), Segmented Mirror-reflecting Extremely Large Telescope (ELT) under construction by the European Southern Observatory (ESO) on top of Cerro Armazones, Chile (altitude: 3046m), in the Atacama Desert. It is a new site, but 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 begin in 2017 with the aim for first light in 2024.
Adaptive Optics (AO)
Extremely Large Telescope (ELT)
European Southern Observatory (ESO)
Overwhelmingly Large Telescope (OWL)