US National Gemini Office

Users Support Portal

The US National Gemini Office (US NGO) main goal is to support US Gemini Users in the phases of the astronomical observing cycle, from proposal preparation through data analysis. This page is the main portal to all information for the different phases, connecting to specific Gemini pages, where users can find definitive contents on instruments and modes. This page also contains tools for data reduction and analysis for the entire Gemini community.



GMOS Cookbook v2.0: the US NGO just launched a new version of the GMOS Cookbook. Read the official announcement.

GMOS-N Status Update: Click here for important information about GMOS-N data.

2022 Gemini Science Meeting: the much-anticipated GSM will gather the Gemini international community in Seoul, Korea (July 26-29)! More information here.

2021 Gemini Science Observations: Read our summary!


Gemini Data Analysis

Click here for information and links on data download, data format, software installation, and additional resources.


Gemini Science Instruments

Get curated resources on data reduction for your favorite instrument:


Data Reduction Tutorials - GitLab Repositories

Our tutorials are based on the examples provided by the Gemini/DRAGONS team. The links below will take you to the repositories with examples and extended help files:

  • DRAGONS: Jupyter notebooks (using the DRAGONS Python API)
  • IRAF: Gemini/IRAF scripts


About Us

The US NGO is a group within the Community Science and Data Center (CSDC) at the NSF's NOIRLab. For questions, comments, and/or feedback, you can send us an email at or a direct message on Twitter. For further information about the US NGO members and collaborators, please visit our people page.