General Contact Information

• All Important ESO Contact Addresses
• The ESO-Wide Phone List. E-mail addresses for ESO Garching, Santiago, Paranal, La Silla, ALMA and APEX
• La Silla Contact Information
• Paranal Contact Information
• APEX Contact Information
• Other Important Contact Information

Contact Details for La Silla

In case of EMERGENCY call 4444 or use beeper 93-20

• ESO La Silla switchboard: +56 2 2464 4100; main fax number: +56 2 2464 4101
• La Silla Phone List
• Questions related to the Science Operations or the La Silla instruments should be addressed to the Science Operations Group
• The La Silla Communications page

Contact Details for Paranal

In case of EMERGENCY call 5555 or use Radio Channel 3

• ESO Paranal switchboard: +56 55  243 5100; main fax number: +56 55 243 5001
  
• Paranal Phone List
• Questions related to the Science Operations or the Paranal instruments should be addressed to the Science Operations Group

Contact Details for APEX

• APEX Office San Pedro telephone number: +56 55 244 8200, main fax number: +56 55 244 8221
• APEX Staff Phone List

Other Important Contact Information

• Important ESO Sites Contact Addresses
• The User Support Department (USD) (email: usd-help@eso.org) is responsible for assisting users during the observing proposal preparation processes (Phase 1 and Phase 1). The USD also maintains the Service Mode status reports, and provides assistance to Science Operations Teams on the mountains.