US National Gemini Office

Welcome to the US NGO Users Support Portal!

The US National Gemini Office (US NGO) is a group at the NSF NOIRLab. Our main goal is to support US Gemini Users in the phases of the astronomical observing cycle, from proposal preparation to data analysis. Information about the US NGO members can be found at our people page.

This page is the main portal to all information for the different phases, connecting to specific Gemini pages, where users can find definitive content on instruments and modes. This page also contains data reduction and analysis tools for the entire Gemini community. In addition, Users can also contact the members of the Users' Committee for Gemini Observatory (UCG) for their partner country, listed on the Gemini Observatory governance page.

If you have any questions, comments, and/or feedback, send us an email at [email protected] or a direct message on Twitter or BlueSky.

If your question is more elaborate and involves Gemini data reduction, we encourage you to submit a Gemini Helpdesk Request.

Queue Status

Check the current status of the US queue programs at both sites by clicking the links below.

Gemini North

Gemini South

Summary of Science Observations Last Week

Queue Programs Observed Last Night

News

GHOST RV standards webpage: the US NGO is now also providing RV estimates of standard stars observed with GHOST, along with the reduced spectra, to the community. Click here.

GHOST Data Reduction: the US NGO offers reduced spectra to GHOST programs from all Gemini partner countries! Read more about it here.

DRAGONS data reduction webinar (2025 Sep 2-3): Slides, demos, and Q&A are publicly available at the US NGO GitLab repository.

US NGO in the NOIRLab Era: Read our published article on JATIS/SPIE!

GMOS Cookbook v2.0: Click here. Read the article published in the NOIRLab Mirror.

2023 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

Take a look at the 2026 Gemini capabilities brochure here.

Get curated resources on data reduction for your favorite instrument:

GMOS
GNIRS
GPI
GRACES

GSAOI
MAROON-X
NIRI
NIFS

Flamingos 2
IGRINS
IGRINS-2
Phoenix

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
XDGNIRS: The GNIRS XD reduction pipeline

Astro Data Lab

Astro Data Lab also hosts several Jupyter notebooks that can guide you on how to reduce your Gemini data. Launch a Notebook, get the latest notebooks and you will find them on 04_HowTos/DataReduction/.

The GMOS Data Reduction Cookbook

Find all-mode GMOS PyRAF/IRAF tutorials (Imaging, Long-Slit, Nod & Shuffle, Multi-Object Spectra, and IFU) at the GMOS Cookbook (last update: 03/01/2022).