La Silla Paranal Observatory: The Paranal Facilities

On Paranal ESO operates the ESO Very Large Telescope (VLT) with four 8.2-m telescopes (the Unit Telescopes or short UTs). Each UT provides one Cassegrain and two Nasmyth focus stations for facility instruments. One Nasmyth focus is available for visitor instruments. In addition each UT is equipped with a Coude focus station from which the light can be coherently combined in the interferometric focus.

ESO also operates four 1.8m Auxiliary Telescopes (ATs), that are used as an interferometric array (VISA).

Currently, 11 instruments including 2 interferometric instruments are operational and offered for science observations. Soon, two survey telescopes shall be operated: the 4-m infrared VISTA, and the 2.5-m visible VST telescopes.

In Case of Emergency

In all Emergencies, dial 5555 from any phoning station
Read the Emergency Procedures

Paranal Latest News

• 14 November at 12:41 LT: An earthquake with magnitude 7.7 (Richter) with epicenter north of Antofagasta affected the north of Chile.