The AOS Technical Building

The ALMA Array Operations Site (AOS) Technical Building, the highest altitude high-tech building in the world, at an altitude of 5000 metres on the Chajnantor Plateau in the Chilean Andes. This building houses the ALMA correlator, one of the most powerful supercomputers in the world. The correlator is a critical component of ALMA, enabling its many antennas, which are separated by up to 16 kilometres on the plateau, to work together as a single, giant telescope.