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Striking Gemini Images Point Juno Spacecraft Toward Discovery

Figure 1. A composite color infrared image of Jupiter reveals haze particles over a range of altitudes, as seen in reflected sunlight. The image was taken using the Gemini North telescope with the Near-InfraRed Imager (NIRI) on May 18, 2017, one day before the Juno mission’s sixth close passage (“perijove”) of the planet. The color filters cover wavelengths between 1.69 to 2.275 microns and are sensitive to pressures of 10 millibars to 2 bars.

Korean Astronomers Dissect a Fragmented Asteroid

Figure 1. Rotational light curve of the largest fragment of P/2010 A2. Time-series g’-band photometry over two nights (upper panel) and phase based on the best-fit double-peaked period of 11.36 hr (lower panel). A sine curve with a period of 11.36 hr was plotted in the upper panel (gray line).

2017B Programs and Schedule Announced

The Gemini 2017B observing programs have now been announced. Notification emails to successful PIs were sent today, June 15 2017. Please check the schedules page for more information. Note that the new Observing Tool must be used to access and update 17B programs.

2017B Classical Schedule

Semester 2017B

The table below summarises the classically-scheduled programs that have been awarded time on Gemini North and South, as well as programs from the Gemini community awarded Exchange time on Subaru. Jump directly to the schedule for:

2017B OT Released

The 2017B Gemini Observing Tool is now available for download. This update is required to access the Gemini Observing Databases.

The Installation Instructions are linked off of the Observing Tool web page, and we recommend that everyone download their programs from the databases rather than import from saved XMLs.

A Partly-cloudy Exoplanet

GPI images in the K1, K2, LP and MS bands, the emission of host star was blocked. The exoplanet 51 Eri b is indicated by an arrow.

Gemini Observatory Astronomer Meg Schwamb to be Awarded Sagan Medal

Gemini Observatory astronomer Meg Schwamb

Dr. Laura Ferrarese Appointed Interim Director of Gemini Observatory

On July 1, 2017, Dr. Laura Ferrarese begins a one-year term as Interim Director of the Gemini Observatory, which is managed by the Association of Universities for Research in Astronomy (AURA) on behalf of the National Science Foundation (NSF) for the International Gemini participants which include the United States, Canada, Brazil, Argentina, and Chile.

Semester 2017B

This page provides instructions for completing Phase II Science Programs for all Gemini North and Gemini South instruments. It includes submission details and notes of any procedural changes. Please read this page carefully!




The 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 mountains in Hawai'i and Chile, Gemini Observatory's telescopes can collectively access the entire sky.

Gemini is operated by a partnership of five countries including the United States, Canada, Brazil, Argentina and Chile. Any astronomer in these countries can apply for time on Gemini, which is allocated in proportion to each partner's financial stake.

About Gemini
Gemini's Mission
To advance our knowledge of the Universe by providing the international Gemini Community with forefront access to the entire sky.

Beyond 2021: A Strategic Vision for the Gemini Observatory
Strategic Vision PDF
Gemini North with open wind vents and observing slit at sunset.
Gemini South with star-trails of the South Celestial Pole overhead.