EtherCAT and PC-based control have been specified for automation of the Giant Magellan Telescope, including more than 3,000 motion axes and site-wide fieldbus infrastructure.. Once installed at Las Campanas Observatory in the Chilean Andes, the Giant Magellan Telescope (GMT) will introduce many opportunities for the … [16] The casting of the first mirror, in a rotating furnace, was completed on November 3, 2005, but the grinding and polishing were still going on 6½ years later when the second mirror was cast, on 14 January 2012. All Rights Reserved. [46] An adaptive secondary mirror is also designed for the telescope. [33], Additionally the Commissioning Camera (ComCam) will be used to validate the Ground Layer Adaptive Optics performance of the GMT facility Adaptive Optics System. Polishing of the first mirror was completed in November 2012. In November 2015, construction was started at the site, with a ground-breaking ceremony. [32] The fiber positioning system is necessary because of the wide field of view of the GMT. [27], In late October GMTO announced the signing of a contract with German company MT Mechatronics (subsidiary of OHB SE) and Illinois-based Ingersoll Machine Tools, to design, build and install the GMT’s telescope structure. The challenge is that the outer six mirror segments will be off-axis, and although identical to each other, will not be individually radially symmetrical, necessitating a modification of the usual polishing and testing procedures. Instead of one large mirror, the GMT will have seven separate mirrors working together.This will mean its collecting area is bigger than the actual mirror surfaces. [40] Other planned extremely large telescopes include the Extremely Large Telescope and the Thirty Meter Telescope. [46] The telescope will begin observing with only four mirrors: the central and three off-axis segments. [20] [4] The telescope is expected to have a resolving power 10 times greater than the Hubble Space Telescope. The preliminary design of the 25 m Giant Magellan Telescope (GMT) has been completed. This structure will float on a film of oil (50 microns thick), being supported by a number of hydrostatic bearings. The Natural Guide Star AO is needed to produce diffraction-limited corrections over a small field of view (20-30 arcseconds). The Fast-Steering secondary mirror (FSM) of Giant Magellan Telescope (GMT) consists of seven 1.1m diameter segments with effective diameter of 3.2m. This advancement in image quality is a prerequisite for the GMT to fully realize its scientific potential and … [5][6], The excavation for the foundations was completed in early 2019. The GMT has a unique design that is composed of segmented mirrors. The Giant Magellan Telescope Enclosure and Support Facilities concept design is the first study of the next generation, extremely large telescopes enclosures. [31], The planned first light instruments are four instruments and one facility fiber positioning system. GMTO's website places cookies on your device. About. … This paper describes the design of the optics, structure and mechanisms, together with the rationales that lead to the current design. [13] Moreover, due to the sparsity of population centers and other favorable geographical conditions, the night sky in most of the surrounding Atacama Desert region is not only free from atmospheric pollution, but in addition it is probably one of the places least affected by light pollution, making the area one of the best spots on Earth for long-term astronomical observation. Engineers designing the Giant Magellan Telescope have solved an immense design challenge never attempted before: Protecting a 22-story rotating observatory and seven of the world's largest monolithic mirrors from being damaged by earthquakes. The Adaptive Secondary Mirrors (or ASMs) consist of a thin sheet of glass that is bonded to more than 7000 independently controlled voice coil actuators. The design consists of a reflecting telescope with a 39.3-metre-diameter (130-foot) segmented primary mirror and a 4.2 m (14 ft) diameter secondary mirror, and will be supported by adaptive optics, eight laser guide … It will be made of seven 8.4 m (27.6 ft) diameter mirror parts. PASADENA, Calif.-- (BUSINESS WIRE)--Engineers designing the Giant Magellan Telescope have solved an immense design challenge never attempted before: Protecting a 22-story rotating observatory and seven of the world’s largest monolithic mirrors from being damaged by earthquakes. [8], The primary mirror array as a whole will have a focal ratio (focal length divided by diameter) of f/0.71. The Giant Magellan Telescope is designed to have a resolving power 10 times greater than the Hubble Space Telescope — one of the most productive scientific achievements in the history of astronomy. This paper describes the design of the optics, structure and mechanisms, together with the rationales that lead to the current design. Each of the seven segments is held by three axial supports and a central lateral support with a vacuum system to mirror gravity compensations. Based on the heritage of the successful Magellan Observatories, The GMT is located at Las Campánas Peak within the Las Campánas Observatory, Chile. In January 2018, WSP was awarded the contract to manage construction of the GMT. The innovative seismic protection design earned top marks from … The casting of each mirror uses 20 tons of E6 borosilicate glass from the Ohara Corporation of Japan and takes about 12–13 weeks. Engineers designing the Giant Magellan Telescope have solved an immense design challenge never attempted before: Protecting a 22-story rotating observatory and seven of the world’s largest monolithic mirrors from being damaged by earthquakes. The GMT is a 24.5-meter (80-ft) diameter next-generation giant … The structure will weigh 1,800 tons without mirrors and instruments. © 2020 GMTO Corporation. It is located at Las Campanas Observatory in Chile and will be operational in the next decade. GMTO Corporation, the organization managing the development of the Giant Magellan Telescope (GMT) on behalf of its U.S. and international founders including Texas A&M University, has signed a contract with MT Mechatronics and Ingersoll Machine Tools to design, build and install the telescope’s precision steel structure.. Planned to be cast in 2020. The Giant Magellan Telescope (GMT) will be the world's largest telescope when it is completed in 2025. 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