observatory operator

European Southern Observatory

The European Southern Observatory is an intergovernmental astronomy organisation established in 1962 that designs, builds and operates ground-based observatories for the international scientific community.

Active Verified 2026-10-02

Overview

The European Southern Observatory is an intergovernmental astronomy organisation established in 1962. Its purpose is to design, build and operate ground-based astronomical observatories for the international scientific community. It operates observing sites at La Silla, Paranal and Chajnantor in Chile, and it is building the Extremely Large Telescope on Cerro Armazones. Its work combines the operation of observing facilities with support for observations, technology development, scientific data and public engagement in astronomy. Its role therefore includes ground-based infrastructure for astronomical observation as well as activities connected with scientific work. This profile is limited to those functions, sites and construction project; it does not specify instruments, scientific results, technical capabilities or operating schedules.

Essential data

Key fact
Intergovernmental astronomy organisation established in 1962.
Key fact
Designs, builds and operates ground-based astronomical observatories.
Key fact
Operates sites at La Silla, Paranal and Chajnantor in Chile.
Key fact
Building the Extremely Large Telescope on Cerro Armazones.

Sources and references

  1. European Southern Observatory — official profile European Southern Observatory

Context