A planned IT Maintenance and Release Window is scheduled between
Saturday, 14 February 2026 at 08:00 CET/04:00 CLST and Sunday, 15 February 2026 at 24:00 CET/20:00 CLST.
From 08:00 CET/04:00 CLST on Saturday all ESO IT services including 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, 16 Februrary 2026. We apologize for any inconvenience this may cause.
Service Mode Special Procedures
There are some special procedures for service mode observations in the following cases:
Instrument selector
This page is valid for all instruments