US National Gemini Office


Users Support Portal

The 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 needed in the different phases, explaining and connecting to specific Gemini web pages, where users can find definitive contents on instruments and modes. In addition, this page contains tools for data reduction and analysis for the entire Gemini community.

News (last update: 04/06/2020)


Important information about using the GMMPS software on macOS Catalina and Big Sur: read instructions here.


Winter AAS 237 Splinter Session: Extragalactic Astronomy with Gemini Large and Long Programs. Access the speaker line-up and full presentations in pdf on our workshop page.


A new integration time calculator (ITC) for MAROON-X was released.


The US National Gemini Office is now on Twitter: The US NGO started another channel of communication with the US Gemini community. Posts will include relevant information about upcoming deadlines, software/instrument updates, program completion, publications, and much more. Follow the US NGO on Twitter @usngo!

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 - Github 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.



Last updated or reviewed October 5, 2021.