![]() ![]() On 28 September 2018 the State Land Board approved the recommended re-issuing of the CDUP to build the TMT. The TMT primary mirror is segmented comprising a total of 492 hexagonal segments, each about 1.44m across. In July 2017 a hearings officer recommended that a CDUP be re-issued to allow construction of the telescope to continue on Mauna Kea. The contested case began in October 2016, and following 44 days of testimony by 71 witnesses over five months, the hearing concluded in March 2017. The Supreme Court returned the case to the Hawaii Circuit Court and instructed that a new contested case hearing be conducted. ![]() Work on the telescope was halted in 2015 when the Hawaii Supreme Court invalidated the existing Conservation District Use Permit (CDUP) issued to the University of Hawaii Hilo by the Board of Land and Natural Resources (BLNR) on procedural grounds. It will provide images with resolution over 12-times sharper than those from the Hubble Space Telescope, and will observe in wavelengths ranging from the ultraviolet to the mid-infrared. The TMT, named for its 30m diameter primary mirror, is one of three extremely large telescopes currently planned for first light between 2024-2027 – the others being the Giant Magellan Telescope and the Extremely Large Telescope, both under construction in Chile.īeing three times as wide and having nine times more area than the largest currently existing visible-light telescope in the world, the TMT will enable astronomers to see deeper into space and observe cosmic objects with extreme sensitivity. The Hawaii Supreme Court has ruled that construction of the Thirty Meter Telescope (TMT) will be permitted to continue on the Mauna Kea volcano in Hawaii.
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