Cerro Armazones

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Cerro Armazones
Eagle Eyes over Armazones.jpg
Aerial view of the Cerro Armazones
Highest point
Elevation3,046 m (9,993 ft)
Coordinates24°35′21″S 70°11′32″W / 24.58917°S 70.19222°W / -24.58917; -70.19222Coordinates: 24°35′21″S 70°11′32″W / 24.58917°S 70.19222°W / -24.58917; -70.19222
Cerro Armazones is located in Chile
Cerro Armazones
Cerro Armazones
Location in Chile
LocationAntofagasta Region, Chile
Parent rangeCordillera Vicuña Mackenna

Cerro Armazones is a mountain located in the Sierra Vicuña Mackenna of the Chilean Coast Range, approximately 130 km (81 mi) south-east of Antofagasta in the Antofagasta Region, Chile. Before construction started on the European Extremely Large Telescope, the summit was a horizontal control point with an elevation of 3,064 metres (10,052 ft).[1] The new elevation is 3,046 m (9,993 ft).[2] It is located in a privileged zone for optical astronomy because it has 89% cloudless nights a year.[3] It currently hosts the 1.5 m (5 ft) Hexapod-Telescope and other telescopes at the Cerro Armazones Observatory.

On 26 April 2010, the European Southern Observatory Council selected Cerro Armazones as the site for the planned Extremely Large Telescope.[4]



  1. ^ Joint Operations Graphic (JPEG) (Map) (1st ed.). 1 : 250,000. 1501. Defence Mapping Agency Topographic Center. 1974. p. Sheet SG 19-2.
  2. ^ "The Extremely Large Telescope". www.eso.org. Retrieved 29 June 2017.
  3. ^ Schöck, M.; Els, S.; Riddle, R.; Skidmore, W.; Travouillon, T.; Blum, R.; Bustos, E.; Chanan, G.; Djorgovski, S. G.; Gillett, P.; Gregory, B.; Nelson, J.; Otárola, A.; Seguel, J.; Vasquez, J.; Walker, A.; Walker, D.; Wang, L. (1 April 2009). "Thirty Meter Telescope Site Testing I: Overview". Publications of the Astronomical Society of the Pacific. 121 (878): 384–395. arXiv:0904.1183. Bibcode:2009PASP..121..384S. doi:10.1086/599287.
  4. ^ "E-ELT Site Chosen". Europe: European Southern Observatory. 26 April 2010. Retrieved 26 April 2010.
  5. ^ "Supermoon beckons in the new year". www.eso.org. Retrieved 8 January 2018.
  6. ^ "Ripples Across the Chilean Sky". ESO Picture of the Week. Retrieved 29 May 2013.

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