Gemini Observatory Archive offline July 19
July 14th, 2025
The Gemini Observatory Archive will be off line from 0800-1600 HST on Saturday 19 July for software and database upgrades.
Science Operations Announcements
Gemini proposal server inaccessible July 3
July 3rd, 2025
The Gemini proposal server will be unavailable and unable to receive proposals between about 10:00 and 14:00 Chilean time on Thursday, July 3 due to data center maintenance. If you need to submit a director's time or poor-weather proposal, please wait until after this time.
Mask Cutter unavailable for at least one month
July 1st, 2025
The mask cutter used for both GMOS and F2 masks is currently out of service. After consulting with the vendor, we’ve ordered the required part for repair. Once the part arrives, a technician will be dispatched for installation. The estimated timeline for return to service is at least one month. We will prioritize cutting masks for early 25B targets once it has returned to service. Meanwhile don’t wait to design your masks!
Observing Databases offline June 4
June 2nd, 2025
The Gemini observing databases will be offline for several hours on Wednesday, June 4 while we perform software updates.
During this time the following services will be unavailable:
- Observing Tool synchronizations and file transfers
- Phase I Tool guide star probability queries
- Target of Opportunity triggers
The new 2025B Observing Tool will be available after the update and will be required to access the observing databases.
Gemini South Schedule Changes June-July 2025
May 27th, 2025
The Gemini South Telescope Shutdown has been moved up to July 7 - Aug 1 to accomodate TAC allocated programs in early Aug. Additionally, due to inclement weather in May and April, we have added an extra GeMS/GSAOI run June 9 - 15. The 25A semester schedule has been updated accordingly.
DRAGONS 4.0 - New Support for GNIRS Longslit
May 5th, 2025
DRAGONS v4.0.0 with new support for near-infrared spectroscopy is now available. This specific release includes support for GNIRS longslit. Upcoming releases, later this year, will add support for GNIRS cross-dispersed and Flamingos 2 longslit. The new support for GNIRS includes non-thermal and thermal bands, and full calibration including wavelength calibration using sky features and telluric correction. To get the software and for more information, i
2025A OT Available
December 9th, 2024
The 2025A Gemini Observing Tool is now available for download.
This version is required to access the Gemini Observing Databases.
Please see the download and installation instructions on the Observing Tool web page which also includes the release notes for this version.
If, after updating, you don't see your program in the OT program list please try removing and re-adding your key.
Observing Databases offline December 5
December 3rd, 2024
The Gemini observing databases will be offline for several hours on Thursday, December 5 while we perform software updates.
During this time the following services will be unavailable:
- Observing Tool synchronizations and file transfers
- Phase I Tool guide star probability queries
- Target of Opportunity triggers
The new 2025A Observing Tool will be available after the update and will be required to access the observing databases.
Updated 2024B OT Available
November 19th, 2024
An updated version of the 2024B Observing Tool (2024.1.1.3) is available for download that fixes an issue resolving new targets with SIMBAD. This update is optional.
Gemini North ODB offline Aug 21
August 19th, 2024
The Gemini North observing database will be offline for several hours on Tuesday, August 20 Wednesday, August 21 while we perform hardware maintenance.
During this time the following services will be unavailable:
- Observing Tool synchronizations and file transfers
- Phase I Tool guide star probability queries
- Target of Opportunity triggers
Please refresh this page for updates: