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Swedish-ESO Submillimetre Telescope

(former 15 m radio telescope array in Chile)

The Swedish-ESO Submillimetre Telescope (SEST) was a 15-meter millimeter/submillimeter telescope in operation from 1987 to 2003 at La Silla Observatory in Chile. At the beginning of its life, it was the largest sub­millimeter telescope in the southern hemisphere. When it was decommissioned, its bolometer array, SIMBA was used to test Atacama Pathfinder Experiment which was in development.

Further reading:
821μm365GHz1.6meVbeginSwedish-ESO Submillimetre Telescope
4.3mm70GHz290μeVendSwedish-ESO Submillimetre Telescope