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Exploring the Universe, Sharing its Wonders

The International Gemini Observatory consists of twin 8.1-meter diameter optical/infrared telescopes located on two of the best observing sites on the planet. From their locations on Maunakea in Hawai‘i and Cerro Pachón in Chile, Gemini Observatory's telescopes can collectively access the entire sky.

The international Gemini Observatory is operated by NSF NOIRLab.

About Gemini

Operations Updates

January 17, 2025

Fast Turnaround Call For Proposals

January 2025 Call for Proposals
December 13, 2024

General Announcements

25A programs and schedule announced
December 9, 2024

Science Operations Announcements

2025A OT Available
December 18, 2024

Fast Turnaround Call For Proposals

December 2024 Call for Proposals
More Operations Updates

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Access the Calls for Proposals
Semester Program: 2025A CfP Closed
Large and Long Program: 2025B LLP CfP Open
Fast Turnaround: This month's CfP Open

Press Releases

DECam and Gemini South Discover Three Tiny ‘Stellar-Ghost-Town’ Galaxies

DECam and Gemini South Discover Three Tiny ‘Stellar-Ghost-Town’ Galaxies

January 15, 2025
Dark Energy Camera Captures the Glittering Galaxies of the Antlia Cluster

Dark Energy Camera Captures the Glittering Galaxies of the Antlia Cluster

January 1, 2025

Dark Energy Camera Spies the Outskirts of the Swirling Southern Pinwheel Galaxy

Dark Energy Camera Spies the Outskirts of the Swirling Southern Pinwheel Galaxy

December 6, 2024

Gemini North Captures Galactic Archipelago Entangled In a Web Of Dark Matter

Gemini North Captures Galactic Archipelago Entangled In a Web Of Dark Matter

October 21, 2024

Radiant Stars at the Heart of a Cosmic Rose

Radiant Stars at the Heart of a Cosmic Rose

October 1, 2024

More Press Releases

International Gemini Observatory Participants

The International Gemini Observatory  provides the astronomical communities in six participant countries with state-of-the-art astronomical facilities that allocate observing time in proportion to each country's contribution. In addition to financial support, each country also contributes significant scientific and technical resources. The national research agencies that form the Gemini partnership include: the US National Science Foundation (NSF), the Canadian National Research Council (NRC), the Chilean Agencia Nacional de Investigación y Desarrollo (ANID), the Brazilian Ministério da Ciência, Tecnologia e Inovação, the Argentinean Ministerio de Ciencia, Tecnología e Innovación, and the Korea Astronomy and Space Institute (KASI). The observatory is managed by the Association of Universities for Research in Astronomy, Inc. (AURA) under a cooperative agreement with the NSF. The NSF also serves as the executive agency for the international partnership.

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  • Canadian National Research Council (NRC) logo
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  • Brazilian Ministério da Ciência, Tecnologia e Inovação logo
  • Argentinean Ministerio de Ciencia, Tecnología e Innovación logo
  • Korea Astronomy and Space Institute (KASI) logo
  • Association of Universities for Research in Astronomy, Inc. (AURA) logo

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Observing

    • Start here!
    • Phase I: Proposing for Time
    • Phase II: Requesting & Monitoring Observations
    • Phase III: Retrieving & Reducing Data
    • Getting Help
    • Schedules and Queue
    • Resources
    • Science Operations Statistics
    • Telescopes and Sites
    • Policies Regarding Observing
    • Visiting Gemini
    • Operations Development

Instrumentation

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    • Timing information in Gemini Instruments

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