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Atacama Large Millimeter Array

(large radio telescope array in Chile)

The Atacama Large Millimeter Array (ALMA) is an interferometer array of radio telescopes on the Chajnantor Plateau in the Atacama Desert in Chile. Construction began in November 2003 and inauguration was on March 13, 2013. It sits at an altitude of 5000 meters and consists of 66 12-meter and 7-meter movable dishes that observe millimeter and sub-millimeter wavelengths.

Operation began with 50 12-meter dishes. A later additional called the Atacama Compact Array (ACA) consists of sixteen additional 12-meter and 7-meter dishes with different characteristics, including a wider field of view.

300μm1000GHz4.2meVbeginAtacama Large Millimeter Array
9.7mm31GHz128μeVendAtacama Large Millimeter Array

Referenced by:
angular resolution
Academia Sinica Institute of Astronomy and Astrophysics (ASIAA)
Atacama Submillimeter Telescope Experiment (ASTE)
Atacama Desert
back end instrument
Combined Array for Research in Millimeter-wave Astronomy (CARMA)
European Southern Observatory (ESO)
front end instrument
Greenland Telescope (GLT)
HL Tau
LABOCA Extended Deep Field South Submillimetre Survey (LESS)
Large Millimeter Telescope (LMT)
Millimeter-wave Intensity Mapping Experiment (mmIME)
Next Generation Very Large Array (ngVLA)
National Radio Astronomy Observatory (NRAO)
protoplanetary disk (PPD)