Large Millimeter Telescope
It is located within Chalchicomula de Sesma municipality, on top of the Sierra Negra, the fifth highest peak in Mexico and an extinct volcanic companion to Mexico's highest mountain, the Pico de Orizaba, in the state of Puebla. Its construction took 10 years, and cost 116 million dollars. It is a binational Mexican (80%) American (20%) joint project of the Instituto Nacional de Astrofsica, ptica y Electrnica (INAOE) and the University of Massachusetts Amherst.
Millimeter wavelength observations using the LMT will give astronomers a view of regions which are obscured by dust in the interstellar medium, thus increasing our knowledge about star formation. The telescope is also particularly fitted for observing solar system planetesimals and planets and extra solar protoplanetary disks which are relatively cold and emit most of their radiation at millimeter wavelengths. The telescope, now in its first phase of early science operations, has annual costs of 5.5 million USD per year, which makes it the largest and most expensive scientific venture in Mexico's history, but still modest in comparison with some major astronomical facilities worldwide.
Delays in finishing the project
The telescope construction officially lasted six years, from early 2000 until its inauguration by president Fox in November 2006, but actually still goes on. LMT made a token first astronomical observation at 12 GHZ (or 2.5 cm) in 2006 during the inauguration, but its first light in the millimeter band could not be announced until the 1st of June 2011. LMT started a phase of early science operations in May 2013 and has been operating as a 32m telescope since. The current surface makes it already the largest single dish millimeter telescope in the world, though only by little and only in the 4mm to 1.3mm bands. The surface of the telescope is to be completed late in 2015 and will have to be adjusted to usefully operate down to 0.8mm. In 1992 INAOE did not have a solid dedicated group of national nor foreign radio astronomers and has been working in its development since. The involvement from the scientists at INAOE represented over 50% of the proposals received in the August 2014 call for proposals.
Atacama Large Millimeter Array (ALMA, Chile)Giant Metrewave Radio Telescope (GMRT, India)Very Long Baseline Array (VLBA, USA).
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