Astrophysics (Index)About

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. 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. It began operation in 2013 with 50 12-meter dishes, having been under construction since 2003. A later addition called the Atacama Compact Array (ACA) consists of sixteen additional 12-meter and 7-meter dishes with different specifications, including a wider field of view.

ALMA is currently producing among the most detailed images of many phenomena (within its wavelength-range) with angular resolutions varying down to less than fifteen milliarcseconds.

Further reading:
300μm1000GHz4.2meVbeginAtacama Large Millimeter Array
9.7mm31GHz128μeVendAtacama Large Millimeter Array

Referenced by pages:
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)
Llano de Chajnantor Observatory
Earth rotation synthesis
European Southern Observatory (ESO)
front end instrument
Greenland Telescope (GLT)
HL Tau
LABOCA Extended Chandra Deep Field-South Submillimetre Survey (LESS)
Large Millimeter Telescope (LMT)
millimeter astronomy
Millimeter-wave Intensity Mapping Experiment (mmIME)
National Astronomical Observatory of Japan (NAOJ)
Next Generation Very Large Array (ngVLA)
National Radio Astronomy Observatory (NRAO)
protoplanetary disk (PPD)
submillimeter astronomy