APEX, the largest submillimetre-wavelength single-dish telescope operating in the southern hemisphere, has a suite of instruments for astronomers to use in their observations, a major one being LABOCA, the Large APEX Bolometer Camera.
APEX first light was achieved in May 2004 using the SEST Imaging Bolometer Array (SIMBA) that had been moved to APEX after the decommissioning of the SEST and the first radio pointing model was compiled.