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.

[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.

This article about a specific observatory, telescope or astronomical instrument is a stub.

You can help Wikipedia by expanding it.This article about a Mexican building or structure is a stub.