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Proceedings Paper

The Gemini High-Resolution Optical SpecTrograph (GHOST)
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Paper Abstract

The Gemini High-Resolution Optical SpecTrograph (GHOST) is the newest instrument chosen for the Gemini South telescope. It is being developed by a collaboration between the Australian Astronomical Observatory (AAO), the NRC - Herzberg in Canada and the Australian National University (ANU). Using recent technological advances and several novel concepts it will deliver spectroscopy with R>50,000 for up to 2 objects simultaneously or R>75,000 for a single object. GHOST uses a fiber-image-slicer to allow use of a much smaller spectrograph than that nominally required by the resolution-slit–width product. With its fiber feed, we expect GHOST to have a sensitivity in the wavelength range between 363-950 nm that equals or exceeds that of similar directly-fed instruments on world-class facilities. GHOST has entered the build phase. We report the status of the instrument and describe the technical advances and the novel aspects, such as the lenslet-based slit reformatting. Finally, we describe the unique scientific role this instrument will have in an international context, from exoplanets through stellar elemental abundances to the distant Universe. Keywords: Gemini, spectrograph, spectroscopy, ́echelle, high resolution, radial velocity, fiber image slicer, integral field unit.

Paper Details

Date Published: 8 March 2017
PDF: 22 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990817 (8 March 2017); doi: 10.1117/12.2232231
Show Author Affiliations
Andrew I. Sheinis, Australian Astronomical Observatory (Australia)
Andre Anthony, NRC - Herzberg Astronomy & Astrophysics (Canada)
Gabriella Baker, Australian Astronomical Observatory (Australia)
Gregory S. Burley, NRC - Herzberg Astronomy & Astrophysics (Canada)
Vladimir Churilov, Australian Astronomical Observatory (Australia)
Michael Edgar, Australian Astronomical Observatory (Australia)
Michael Ireland, The Australian National Univ. (Australia)
Yuriy Kondrat, Australian Astronomical Observatory (Australia)
John Pazder, NRC - Herzberg Astronomy & Astrophysics (Canada)
Gordon Robertson, Australian Astronomical Observatory (Australia)
Peter J. Young, The Australian National Univ. (Australia)
Ross Zhelem, Australian Astronomical Observatory (Australia)

Published in SPIE Proceedings Vol. 9908:
Ground-based and Airborne Instrumentation for Astronomy VI
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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