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Gemini e-Newscast #76
October 14, 2015
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The Deepest Ground-based Photometry in a Crowded Field
Paolo Turri (University of Victoria, Canada) and colleagues utilized the Gemini Multi-conjugate adaptive optics System (GeMS) with the Gemini South Adaptive Optics Imager (GSAOI) to obtain the most accurate and deepest near-infrared photometry from the ground of a crowded field, in the globular cluster NGC 1851. They also illustrate the remarkable potential of MCAO-equipped extremely large telescopes of the future. The delivered image quality approaches Gemini’s diffraction limit, with an average measured full-width at half-maximum (FHWM) of 0.09 arcsecond. The work is featured on the Gemini web page and published in The Astrophysical Journal Letters. A preprint is also available.
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This color-magnitude diagram of the crowded center of the globular cluster NGC 1851 combines near-infrared observations obtained using GeMS/GSAOI at Gemini South and optical data from the Hubble Space Telescope. Red dots mark the main sequence turnoff and the main sequence “knee,” around Ks = 18 and 20.5 magnitudes, respectively.
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Beta Testing of New Gemini Observatory Archive
The new Gemini Observatory Archive (GOA) is now available for beta testing, at https://archive.gemini.edu/. Next month, the GOA will replace the Gemini Science Archive (GSA) as the conduit for Gemini data. The easy-to-use web interface provides a straightforward way to get to your own data by program identification (ID) or to search the public data collection by parameters such as instrument configuration, object name, or coordinates.
Please see the "About" and "Help" links on the archive page for more information. We are adding data from both telescopes in near-real-time during observing. Although we believe that the system is fully operational, short outages may occur as we put on the finishing touches. If you experience any issues with the system, please file a ticket through the Gemini Helpdesk. Your input will help us improve the final archive.
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A screenshot of the new Gemini Observatory Archive
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Small Instrument Upgrade Project Opportunity
Gemini has introduced a new program to provide user-motivated upgrades to our operating instruments at both Gemini sites. We welcome your proposals to deliver the improvements that will enhance Gemini’s scientific capabilities. A total budget of $200,000 is available, which we expect to fund two or more projects. Proposals will be evaluated on their scientific value to the Gemini community, the projects' risks, and their initial and long-term costs to Gemini. See complete information including selection criteria and the full Request for Proposals at the Gemini website.
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Save the Date: January 8 Gemini Town Hall at the AAS
Expect to see Gemini at the 2016 American Astronomical Society (AAS) meeting in Kissimmee, Florida. Join us for our Town Hall on Friday, January 8, 12:45-1:45PM, where you can hear the latest news and provide your feedback about Gemini. Staff will be available to answer questions and provide user support at the booth in the exhibit hall throughout the meeting.
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Gemini South Now Accepts Fast Turnaround Proposals
When you submit Fast Turnaround proposals you can now request time on Gemini South as well as Gemini North. In the South, GMOS-S and Flamingos-2 are available, along with a limited amount of time on the Gemini Planet Imager (GPI). The next deadline is October 31, for observations to begin in December. Read the current Fast Turnaround call for proposals here for more details on the program and requirements.
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Observations of the Herbig-Haro 24 (HH 24) Complex reveal gas jets and buried young stars amidst the dynamic process of star birth. This color image is based on observations using GMOS on Gemini North. See the Gemini image release for more information about the image and the science behind it.
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