ALMA Antennas at OSF
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ALMA Antennas at OSF

May 12, 2009
View from inside the main building of the 2,900 metre high ALMA Operation Support Facility. Three antennas currently being tested are seen outside. On 30 April, scientists and engineers working on the world's largest astronomical project, the Atacama Large Millimeter/submillimeter Array (ALMA), have achieved the successful linking of two ALMA astronomical antennas, synchronised with a precision of one millionth of a millionth of a second, to observe the planet Mars. The observations demonstrate ALMA's full hardware functionality and connectivity. When completed around 2012, ALMA will comprise an array of 66 giant 12-metre and 7-metre diameter antennas observing at millimetre and submillimetre wavelengths.

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