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Llano de Chajnantor Observatory is the name for a group of astronomical observatories located at an altitude of over 4,800 m (15,700 ft) in the Atacama Desert of northern Chile. The site is in the Antofagasta Region approximately 50 kilometres (31 mi) east of the town of San Pedro de Atacama .
NANTEN2 Observatory (NANTEN2) Llano de Chajnantor Observatory, Atacama Desert, Chile 4 m telescope located at Pampa La Bola. Northeastern Space Radio Observatory: Eusébio, Brazil 14.2 m telescope Polarization Emission of Millimeter Activity at the Sun: Complejo Astronomico El Leoncito (CASLEO), San Juan Province, Argentina: 45 and 90 GHz
The Atacama Pathfinder Experiment (APEX) is a radio telescope 5,064 meters above sea level, at the Llano de Chajnantor Observatory in the Atacama Desert in northern Chile, 50 km east of San Pedro de Atacama built and operated by three European research institutes.
The array has been constructed on the 5,000 m (16,000 ft) elevation Chajnantor plateau – near the Llano de Chajnantor Observatory and the Atacama Pathfinder Experiment. This location was chosen for its high elevation and low humidity, factors which are crucial to reduce noise and decrease signal attenuation due to Earth's atmosphere. [1]
The site is located less than 5 km (3.1 mi) north-northeast of the Llano de Chajnantor Observatory, where the Atacama Large Millimeter Array (ALMA) is located, but is over 580 m (1,900 ft) higher in elevation.
The Llano de Chajnantor is a 5,100-metre-high (16,700 ft) plateau in the Atacama Desert, about 50 kilometres (31 mi) east of San Pedro de Atacama. The site is 750 metres (2,460 ft) higher than the Mauna Kea Observatory and 2,400 metres (7,900 ft) higher than the Very Large Telescope on Cerro Paranal.
The ASTE was deployed to its site on Pampa La Bola, near Cerro Chajnantor and the Llano de Chajnantor Observatory in northern Chile. [1] The antenna shows excellent performance including a surface accuracy of 19 μm (0.00075 in) r.m.s. [2] The telescope is remotely controllable from multiple sites through satellite connections and the Internet.
These include the Chacaltaya Astrophysical Observatory in Bolivia, which at 5,230 m (17,160 ft) was the world's highest permanent astronomical observatory [9] from the time of its construction during the 1940s until surpassed in 2009 by the new University of Tokyo Atacama Observatory, [10] an optical-infrared telescope on a remote 5,640 m ...