Cerro Armazones Observatory (Spanish: Observatorio Cerro Armazones, OCA; German: Observatorium Cerro Armazones, OCA) is an astronomicalobservatory owned and operated jointly by the Ruhr University Bochum (RUB) and the Catholic University of the North (UCN). It was established in 1995 on the slopes of Cerro Armazones, a mountain in the Antofagasta Region of Chile. The observatory is located in the Atacama Desert about 110 kilometres (68 mi) south of the city of Antofagasta. Unlike many other observatories, OCA is not located at the highest point of its host mountain. Instead, it sits in a saddle approximately 340 metres (1,120 ft) below the summit and 1 kilometre (0.62 mi) to the southwest. The Hexapod-Telescope is located 500 metres (1,600 ft) further to the west and 100 metres (330 ft) higher than the other telescopes, on a subsidiary peak of Cerro Armazones, Cerro Murphy.
The 1.5 metres (59 in) Hexapod-Telescope reflector is named for its unusual mount, consisting of six high-precision struts supporting a platform to which the telescope is attached. It was developed and tested by RUB in Germany, and moved to Cerro Armazones in 2006.
^Kabath, P.; Fruth, T.; Rauer, H.; Erikson, A.; Murphy, M. G.; Chini, R.; Lemke, R.; Csizmadia, Sz.; Eigmüller, P. et al. (2009). "CHARACTERIZATION OF CoRoT TARGET FIELDS WITH BERLIN EXOPLANET SEARCH TELESCOPE. II. IDENTIFICATION OF PERIODIC VARIABLE STARS IN THE LRc2 FIELD". The Astronomical Journal137 (4): 3911. arXiv:0903.0325. Bibcode:2009AJ....137.3911K. doi:10.1088/0004-6256/137/4/3911.