Guillermo Haro Observatory

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Guillermo Haro Observatory
Organization INAOE
Location Cananea, Sonora, Mexico
Coordinates 31°3′10″N 110°23′5″W / 31.05278°N 110.38472°W / 31.05278; -110.38472Coordinates: 31°3′10″N 110°23′5″W / 31.05278°N 110.38472°W / 31.05278; -110.38472
Altitude 2,480 metres (8,140 ft)
Weather 75% clear
Established 1972 (1972)
Observatorio Astrofísico Guillermo Haro
unnamed telescope 2.12 m reflector
unnamed telescope 0.41 m reflector

The Guillermo Haro Observatory (Spanish: Observatorio Astrofísico Guillermo Haro - OAGH) is an astronomical observatory owned and operated by the National Institute of Astrophysics, Optics and Electronics (Spanish: Instituto Nacional de Astrofísica, Óptica y Electrónica - INAOE) in the Mexican state of Sonora. It is located 13 km (8.1 mi) north of Cananea and 85 km (53 mi) south-east of Mount Hopkins. It is named after Professor Guillermo Haro.


The main telescope at the observatory is Ritchey-Chretein design with a 2.12 m (83 in) primary mirror and a 0.5 m (20 in) secondary mirror. Four different instruments are available to be mounted at the Cassegrain focus.[1] Planning for the telescope began in 1972, but it was not dedicated until 1987. Routine operations began in 1992.[2][3]

The observatory has a 0.41 m (16 in) Schmidt-Cassegrain reflector built by Meade Instruments on an equatorial mount located in a separate dome.[4] It is used to make atmospheric extinction measurements and to monitor light pollution.[5]

See also[edit]


  1. ^ "INAOE - Astrofísica - Observatorios - OAGH - Telescopios". INAOE - Astrofísica. Retrieved 2012-01-07. 
  2. ^ "INAOE - Astrofísica - Observatorios - OAGH". INAOE - Astrofísica. Retrieved 2012-01-07. 
  3. ^ Carrasco, B. E.; Carraminana, A.; Sanchez-Sesma, F. J.; Lermo, F. J. (1998). "Protection of the Observatorio Astrofisico "Guillermo Haro"". Preserving The Astronomical Windows. Proceedings of Joint Discussion number 5 of the 23rd General Assembly of the International Astronomical Union held in Kyoto, Japan 22–23 August 1997. ASP Conference Series 139: 141. Bibcode:1998ASPC..139..141C. 
  4. ^ "INAOE - Astrofísica - Observatorios - OAGH - Telescopios - El Meade". INAOE - Astrofísica. Retrieved 2012-01-07. 
  5. ^ Ortiz, M.; Carrasco, B.; Carramiñana, A.; Pacheco, S. (2002). "Site characterization at the "Observatorio Astrofísico Guillermo Haro"". Astronomical Site Evaluation in the Visible and Radio Range. ASP Conference Proceedings (San Francisco: Astronomical Society of the Pacific) 266: 470. Bibcode:2002ASPC..266..470O. ISBN 1-58381-106-0. 

External links[edit]