A planned IT Maintenance and Release Window is scheduled between
Saturday, 11 April 2026 at 08:00 CEST/02:00 CLT and Sunday, 12 April 2026 at 24:00 CEST/18:00 CLT.
From 08:00 CEST/02:00 CLT 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.
Full services cannot be guaranteed before Monday, 13 April 2026. We apologize for any inconvenience this may cause.
Phase 2 Instrument Overview Table
For information, please follow the links in this table. If one instrument has special requirements, this is visualized in the relevant row of the table. A summary table of the main characteristics of all instruments is available here.