ALMA's 66 antennas

ALMA's 66 antennas in a clear compact configuration. Nearby, to the right is the Technical Building where the Correlator is located, a supercomputer with 130 million processors, which synchronizes the signals from the antennas. In the background stand out the Licancabur volcano and, on the far right, the Chajnantor hill. © Sergio Otárola - ALMA (ESO / NAOJ / NRAO)