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Proceedings Paper

First light results from the Hermes spectrograph at the AAT
Author(s): Andrew Sheinis; Sam Barden; Michael Birchall; Daniela Carollo; Joss Bland-Hawthorn; Jurek Brzeski; Scott Case; Russell Cannon; Vladimir Churilov; Warrick Couch; Robert Dean; Gayandhi De Silva; Valentina D'Orazi; Tony Farrell; Kristin Fiegert; Kenneth Freeman; Gabriella Frost; Luke Gers; Michael Goodwin; Doug Gray; Ron Heald; Jeroen Heijmans; Damien Jones; Stephan Keller; Urs Klauser; Yuriy Kondrat; Jon Lawrence; Steve Lee; Slavko Mali; Sarah Martell; Darren Mathews; Don Mayfield; Stan Miziarski; Rolf Muller; Naveen Pai; Robert Patterson; Ed Penny; David Orr; Keith Shortridge; Jeffrey Simpson; Scott Smedley; Greg Smith; Darren Stafford; Nicholas Staszak; Minh Vuong; Lewis Waller; Elizabeth Wylie de Boer; Pascal Xavier; Jessica Zheng; Ross Zhelem; Daniel Zucker
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Paper Abstract

The High Efficiency and Resolution Multi Element Spectrograph, HERMES is an facility-class optical spectrograph for the AAT. It is designed primarily for Galactic Archeology [21], the first major attempt to create a detailed understanding of galaxy formation and evolution by studying the history of our own galaxy, the Milky Way. The goal of the GALAH survey is to reconstruct the mass assembly history of the of the Milky Way, through a detailed spatially tagged abundance study of one million stars. The spectrograph is based at the Anglo Australian Telescope (AAT) and is fed by the existing 2dF robotic fiber positioning system. The spectrograph uses VPH-gratings to achieve a spectral resolving power of 28,000 in standard mode and also provides a high-resolution mode ranging between 40,000 to 50,000 using a slit mask. The GALAH survey requires a SNR greater than 100 for a star brightness of V=14. The total spectral coverage of the four channels is about 100nm between 370 and 1000nm for up to 392 simultaneous targets within the 2 degree field of view. Hermes has been commissioned over 3 runs, during bright time in October, November and December 2013, in parallel with the beginning of the GALAH Pilot survey starting in November 2013. In this paper we present the first-light results from the commissioning run and the beginning of the GALAH Survey, including performance results such as throughput and resolution, as well as instrument reliability. We compare the abundance calculations from the pilot survey to those in the literature.

Paper Details

Date Published: 8 July 2014
PDF: 22 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91470Y (8 July 2014); doi: 10.1117/12.2055595
Show Author Affiliations
Andrew Sheinis, Australian Astronomical Observatory (Australia)
The Univ. of Sydney (Australia)
Sam Barden, Leibniz-Institut für Astrophysik Potsdam (Germany)
Michael Birchall, Australian Astronomical Observatory (Australia)
Daniela Carollo, Macquarie Univ. (Australia)
Joss Bland-Hawthorn, The Univ. of Sydney (Australia)
Jurek Brzeski, Australian Astronomical Observatory (Australia)
Scott Case, Australian Astronomical Observatory (Australia)
Russell Cannon, Australian Astronomical Observatory (Australia)
Vladimir Churilov, Australian Astronomical Observatory (Australia)
Warrick Couch, Australian Astronomical Observatory (Australia)
Robert Dean, Australian Astronomical Observatory (Australia)
Gayandhi De Silva, Australian Astronomical Observatory (Australia)
Valentina D'Orazi, Macquarie Univ. (Australia)
Tony Farrell, Australian Astronomical Observatory (Australia)
Kristin Fiegert, Australian Astronomical Observatory (Australia)
Kenneth Freeman, Australian National Univ. (Australia)
Gabriella Frost, Australian Astronomical Observatory (Australia)
Luke Gers, Australian Astronomical Observatory (Australia)
Michael Goodwin, Australian Astronomical Observatory (Australia)
Doug Gray, Australian Astronomical Observatory (Australia)
Ron Heald, Australian Astronomical Observatory (Australia)
Jeroen Heijmans, TNO (Netherlands)
Damien Jones, Prime Optics (Australia)
Stephan Keller, The Australian National Univ. (Australia)
Urs Klauser, Australian Astronomical Observatory (Australia)
Yuriy Kondrat, Australian Astronomical Observatory (Australia)
Jon Lawrence, Australian Astronomical Observatory (Australia)
Macquarie Univ. (Australia)
Steve Lee, Australian Astronomical Observatory (Australia)
Slavko Mali, Australian Astronomical Observatory (Australia)
Sarah Martell, Australian Astronomical Observatory (Australia)
The Univ. of New South Wales (Australia)
Darren Mathews, Australian Astronomical Observatory (Australia)
Don Mayfield, Australian Astronomical Observatory (Australia)
Stan Miziarski, Australian Astronomical Observatory (Australia)
Rolf Muller, Australian Astronomical Observatory (Australia)
Naveen Pai, Australian Astronomical Observatory (Australia)
Robert Patterson, Australian Astronomical Observatory (Australia)
Ed Penny, Australian Astronomical Observatory (Australia)
David Orr, Australian Astronomical Observatory (Australia)
Keith Shortridge, Australian Astronomical Observatory (Australia)
Jeffrey Simpson, Macquarie Univ. (Australia)
Scott Smedley, Australian Astronomical Observatory (Australia)
Greg Smith, Australian Astronomical Observatory (Australia)
Darren Stafford, Australian Astronomical Observatory (Australia)
Nicholas Staszak, Australian Astronomical Observatory (Australia)
Minh Vuong, Australian Astronomical Observatory (Australia)
Lewis Waller, Australian Astronomical Observatory (Australia)
Elizabeth Wylie de Boer, Australian National Univ. (Australia)
Pascal Xavier, Australian Astronomical Observatory (Australia)
Jessica Zheng, Australian Astronomical Observatory (Australia)
Ross Zhelem, Australian Astronomical Observatory (Australia)
Daniel Zucker, Macquarie Univ. (Australia)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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