The Gemini observing databases will be offline for several hours on Wednesday December 2 while we perform quarterly software updates.

During this time the following services will be unavailable:

• Observing Tool synchronizations, file transfers, and non-sidereal target queries
• CADC program key validation
• Phase I Tool guide star probability queries

The new 2016A Observing Tool should be available on Thursday December 3 and will be required to access the observing databases. Please check this site for further announcements.