A planned IT Maintenance and Release Window is scheduled between
Saturday, 12 April 2025 at 08:00 CEST/02:00 CLT and Sunday, 13 April 2025 at 24:00 CEST/18:00 CLT.
From 08:00 CET/02:00 CLST on Saturday, all ESO IT services including ERP, Email, Database Management Systems, the Scientific Archive, the User Portal, and internet connectivity on all ESO sites, may experience intermittent outages due to configuration changes in the computer rooms. Full services cannot be guaranteed before Monday, 14 April 2025. We apologize for any inconvenience this may cause.
Service Mode Policies
The ESO Optical/Infrared Telescopes Science Operations Policies document, approved at the 154th Council meeting in June 2020, describes the policies applied to the selection of observations, the operations and the data handling of all ESO optical/near-infrared telescopes.
The following pages list science operations policies implementation specific to service mode that have to be considered for the preparation of Phase 2 material and the execution of observations in service mode:
Instrument selector
This page is valid for all instruments