National Astronomical Observatory (Mexico)
The National Astronomical Observatory (Spanish: Observatorio Astronómico Nacional—OAN) is an astronomical observatory in Baja California, Mexico. History Mexico City The observatory was first established on the balcony of Chapultepec Castle in Mexico City in 1878. The observatory has been operated by the National Autonomous University of Mexico (UNAM) since 1929. It was later moved to Palacio del Ex-Arzobispado in Tacubaya, then on the outskirts of the city on the west side of the Federal Distr…