Cerro Tololo Inter-American Observatory


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Cerro Tololo Inter-American Observatory

(sā`rō tōlō`lō), astronomical observatoryobservatory,
scientific facility especially equipped to detect and record naturally occurring scientific phenomena. Although geological and meteorological observatories exist, the term is generally applied to astronomical observatories.
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 located on Cerro Tololo peak, Chile, with offices in La Serena, about 40 mi (64 km) to the west. Funded by the U.S. National Science Foundation (NSF), it is operated by the Association of Universities for Research in Astronomy (AURA), which also operates such other major national observatories as the Kitt Peak National Observatory in Arizona. The principal instrument is a 158-in. (4-m) reflecting telescope, the largest in the Southern Hemisphere and the twin of the 158-in. (4-m) reflector at Kitt Peak. Other equipment of the observatory includes 60-in. (1.5-m), 36-in. (0.9-m), and twin 16-in. (0.4-m) reflectors and the 24-in. (0.6-m) Curtis-Schmidt camera formerly at the Univ. of Michigan. Also at Cerro Tololo, a half mile from the summit, is a 24-in. (0.6-m) reflector belonging to the Lowell Observatory. Additional telescopes are planned for the 1990s, including a 161 in. (4.1-m) telescope from Columbia Univ. and a new 26-ft (8-m) reflector.

Cerro Tololo Inter–American Observatory

(se -roh toh-loh -loh) (CTIO) A US observatory near La Serena, Chile, at an altitude of 2200 meters. It is run by the Association of Universities for Research in Astronomy (AURA), which operates through the National Optical Astronomical Observatory. Its principal instruments are a 4-meter reflecting telescope, the Victor Blanco Telescope, which began operating in 1976, and two smaller reflectors, one 1.5 meters in aperture and the other 0.9 meter. The 4-meter telescope has a Cer-Vit primary mirror, with Cassegrain (f/8), infrared (f/30), and prime (f/2.7) foci, on an equatorial mounting. The observatory also operates a Schmidt telescope at this site. Nearby Cerro Pachón is the location of the Gemini South telescope (see Gemini telescopes) and the SOAR Telescope.
References in periodicals archive ?
Suntzeff of the Cerro Tololo Inter-American Observatory in La Serena, Chile, announced the discovery of the supernova--officially designated SN 1999fv--in a Nov.
Mendez of the Cerro Tololo Inter-American Observatory near La Serena, Chile, and Dante Minniti of the Pontificia Universidad Catolica de Chile in Santiago analyzed single images of both the Hubble Deep Fields, North and South.
Using a 4-meter telescope at the Cerro Tololo Inter-American Observatory in La Serena, Chile, Polomski and her colleagues have found that since 1997, the amount of mid-infrared radiation emitted by dust surrounding the star has doubled.
Steidel and his collaborators gathered such multiwavelength portraits at three observatories: the William Herschel Telescope in the Canary Islands, Spain, the Cerro Tololo Inter-American Observatory in La Serena, Chile, and Palomar Observatory near Escondido, Calif.
Phillips of the Cerro Tololo Inter-American Observatory in La Serena, Chile, says that's a distinct possibility.
In analyzing half of the 50 type Ia supernovas discovered during the past 4 years at the Cerro Tololo Inter-American Observatory (CTIO) in La Serena, Chile, researchers found that not all of these exploded stars have the same intrinsic brightness.
9-meter telescope at Cerro Tololo Inter-American Observatory in La Serena, Chile, researchers found an optical counterpart to the X-ray source, believed to be a two-star system.
With the 4-meter telescope at Cerro Tololo Inter-American Observatory in La Serena, Chile, one team used light from the distant quasar QSO 0000-263 as a beacon to search for primeval galaxies.
In their study, the astronomers compared photographs, taken 15 years apart at the Cerro Tololo Inter-American Observatory in La Serena, Chile, of a star-packed region at the LMC's northeastern edge.