::Cerro Tololo Inter-American Observatory


Cerro::title    Tololo::display    Inline::convert    Coord::landmark    Region::first    SMARTS::chile


The Cerro Tololo Inter-American Observatory (CTIO) is an astronomical observatory located on Cerro Tololo in the Coquimbo Region of northern Chile, with additional facilities located on Cerro Pachón about {{safesubst:#invoke:convert|convert}} to the southeast. It is within the Coquimbo Region and approximately {{safesubst:#invoke:convert|convert}} east of La Serena, where support facilities are located. The site was identified by a team of scientists from Chile and the United States in 1959, and it was selected in 1962.<ref name=1990MORE /><ref name=CTIO-HIST /> Construction began in 1963 and regular astronomical observations commenced in 1965.<ref name=1966REPT /> Construction of large buildings on Cerro Tololo ended with the completion of the Víctor Blanco Telescope in 1974, but smaller facilities have been built since then. Cerro Pachón is still under development, with two large telescopes inaugurated since 2000, and one in the early stages of construction.

The principal telescopes at CTIO are the 4 m Víctor M. Blanco Telescope, named after Puerto Rican astronomer Victor Manuel Blanco, and the 4.1 m Southern Astrophysical Research (SOAR) telescope, which is situated on Cerro Pachón.<ref name=CTIO-ABT /> Other telescopes on Cerro Tololo include the 1.5 m, 1.3 m, 1.0 m, and 0.9 m telescopes operated by the SMARTS consortium. CTIO also hosts other research projects, such as PROMPT, WHAM, and LCOGTN, providing a platform for access to the southern hemisphere for U.S. and world-wide scientific research.<ref name=CTIO-OTHR />

Cerro Tololo Inter-American Observatory sections
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