Mounted image 104: The Sun hides behind APEX The Sun lies hidden
by the secondary mirror of APEX, the Atacama Pathfinder
Experiment telescope, on the Chajnantor plateau in Chile’s
Atacama region, 5100 metres above sea level. APEX is the largest
submillimetre-wavelength telescope operating in the southern
hemisphere, observing the cold and distant Universe for
astronomers. At one of the highest observatory sites on the
planet, the Sun beats mercilessly down through the thin
atmosphere. F. Montenegro-Montes/ESO/APEX (MPIfR/ESO/OSO)