Cerro Tololo Inter-American Observatory

Cerro Tololo Inter-American Observatory is a research facility located high in the Andes mountains that operates multiple large telescopes for observing the night sky. The installation serves astronomers from different countries studying stars, galaxies, and other cosmic objects.

The observatory was founded in the 1960s and represents an important scientific collaboration between multiple nations. It gradually developed into one of the most powerful astronomical centers in the southern hemisphere.

The facility contributes to scientific education through regular public tours, allowing visitors to learn about astronomical research and celestial observation methods.

Visitors can explore the grounds on foot using well-marked pathways or join guided tours that require advance registration. The high elevation can be physically demanding for people unaccustomed to mountain environments.

The site benefits from natural conditions that regularly allow clear night sky observations and make research particularly productive. Cold ocean winds influence the climate and improve visibility of the sky.

Location: Coquimbo Region

Official opening: 1962

Elevation above the sea: 2,207 m

Part of: Global Oscillations Network Group

Website: https://noirlab.edu/public/programs/ctio

GPS coordinates: -30.16966,-70.80652

Latest update: December 7, 2025 20:21