Covering the ELT's dome

ESO's Extremely Large Telescope (ELT) is under construction in the Atacama Desert in Chile. This drone shot from early January 2025 shows how the cladding of the telescope's dome is advancing. The giant dome will house the telescope and its interior structure, providing protection from the extreme environment of Chile's Atacama Desert. It will be about 80 metres high and have a diameter of about 93 metres.