Corrections? … The Extremely Large Telescope (ELT) is an astronomical observatory currently under construction. https://www.britannica.com/topic/Very-Large-Telescope, European Southern Observatory - Very Large Telescope, Laser Interferometer Gravitational-Wave Observatory. Construction of the VLT began in 1991, and its first observations were made in 1998. Updates? These telescopes can operate individually or together as an interferometer that functions like a telescope … The Extremely Large Telescope (ELT) is a revolutionary scientific project for a 40m-class telescope that will allow us to address many of the most pressing unsolved questions about our Universe. Yepun telescope, part of the European Southern Observatory's (ESO's) Very Large Telescope (VLT), observing the centre of the Milky Way, using the laser guide star facility. These telescopes can operate individually or together as an interferometer that functions like a telescope with a mirror 200 metres (600 feet) in diameter. The large telescopes are named Antu, Kueyen, Melipal, and Yepun, which are the names for the Sun, the Moon, the Southern Cross, and Venus in the language of the Mapuche people. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Premium Membership is now 50% off! Extremely large telescopes are considered worldwide to be one of the highest priorities in ground-based astronomy. Interior view of Antu, one of four 8.2-metre telescopes at the European Southern Observatory's (ESO's) Very Large Telescope (VLT) in Paranal, Chile. Very Large Telescope (VLT), observatory located on the mountain Cerro Paranal (2,635 metres [8,645 feet]) in Chile and consisting of four telescopes with mirrors 8.2 metres (27 feet) in diameter and four others with mirrors 1.8 metres (5.9 feet) in diameter. When completed, it is planned to be the world's largest optical/near-infrared extremely large telescope.Part of the European Southern Observatory (ESO) agency, it is located on top of Cerro Armazones in the Atacama Desert of northern Chile.The design consists of a reflecting telescope … When it opens its powerful and sensitive eye, it’ll be the world’s largest optical/infrared extremely large telescope. Let us know if you have suggestions to improve this article (requires login). When operational in the year 2025, it will be the largest optical/near-infrared telescope … Our editors will review what you’ve submitted and determine whether to revise the article. Erik Gregersen is a senior editor at Encyclopaedia Britannica, specializing in the physical sciences and technology. The VLT also discovered the most massive star known, R136a1, which has a mass 320 times that of the Sun. Very Large Telescope (VLT), observatory located on the mountain Cerro Paranal (2,635 metres [8,645 feet]) in Chile and consisting of four telescopes with mirrors 8.2 metres (27 feet) in diameter and four others with mirrors 1.8 metres (5.9 feet) in diameter. Omissions? If all goes as planned, the European Extremely Large Telescope (ELT) will be the largest telescope in the world by 2024. Artist’s conception of Thirty Meter Telescope | Image Courtesy: TMT.org. It will be able to gather 13 times more light than any other optical telescope existing today, and the resulting images would be 16 times sharper than those captured by the Hubble Space Telescope. Very Large Telescope (VLT), observatory located on the mountain Cerro Paranal (2,635 metres [8,645 feet]) in Chile and consisting of four telescopes with mirrors 8.2 metres (27 feet) in diameter and four others with mirrors 1.8 metres (5.9 feet) in diameter. Among the VLT’s notable discoveries are the first direct spectrum of an extrasolar planet, HR 8799c, and the first direct measurement of the mass of an extrasolar planet, HD 209458b. They will vastly advance astrophysical knowledge, allowing detailed studies of subjects … Black Friday Sale! Thirty Meter Telescope. The VLT is operated by the European Southern Observatory, an astrophysical research organization supported by 16 European countries. Its primary mirror will be a whopping 39.3-metres (130 ft) in diameter. Before joining Britannica in 2007, he worked at the University of Chicago Press on the... Aerial view of the Very Large Telescope (VLT) observatory, Chile.