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Proceedings Paper

Integrating the HERMES spectrograph for the AAT
Author(s): Jeroen Heijmans; Martin Asplund; Sam Barden; Michael Birchall; Daniela Carollo; Joss Bland-Hawthorn; Jurek Brzeski; Scott Case; Vladimir Churilov; Matthew Colless; Robert Dean; Gayandhi De Silva; Tony Farrell; Kristin Fiegert; Kenneth Freeman; Luke Gers; Michael Goodwin; Doug Gray; Ron Heald; Anthony Heng; Damien Jones; Chiaki Kobayashi; Urs Klauser; Yuriy Kondrat; Jon Lawrence; Steve Lee; Darren Mathews; Don Mayfield; Stan Miziarski; Guy J. Monnet; Rolf Muller; Naveen Pai; Robert Patterson; Ed Penny; David Orr; Andrew Sheinis; Keith Shortridge; Scott Smedley; Greg Smith; Darren Stafford; Nicholas Staszak; Minh Vuong; Lewis Waller; Denis Whittard; Elisabeth 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 optical spectrograph designed primarily for the GALAH, Galactic Archeology Survey, the first major attempt to create a detailed understanding of galaxy formation and evolution by studying the history of our own galaxy, the Milky Way1. 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 in the Milky Way. The spectrograph will be based at the Anglo Australian Telescope (AAT) and be fed with the existing 2dF robotic fibre 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 aiming 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. Current efforts are focused on manufacturing and integration. The delivery date of spectrograph at the telescope is scheduled for 2013. A performance prediction is presented and a complete overview of the status of the HERMES spectrograph is given. This paper details the following specific topics: The approach to AIT, the manufacturing and integration of the large mechanical frame, the opto-mechanical slit assembly, collimator optics and cameras, VPH gratings, cryostats, fibre cable assembly, instrument control hardware and software, data reduction.

Paper Details

Date Published: 5 October 2012
PDF: 17 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84460W (5 October 2012); doi: 10.1117/12.925806
Show Author Affiliations
Jeroen Heijmans, Australian Astronomical Observatory (Australia)
Martin Asplund, Mount Stromlo Observatory, Australian National Univ. (Australia)
Sam Barden, Australian Astronomical Observatory (Australia)
National Solar Observatory (United States)
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)
Vladimir Churilov, Australian Astronomical Observatory (Australia)
Matthew Colless, Australian Astronomical Observatory (Australia)
Robert Dean, Australian Astronomical Observatory (Australia)
Gayandhi De Silva, Australian Astronomical Observatory (Australia)
Tony Farrell, Australian Astronomical Observatory (Australia)
Kristin Fiegert, Australian Astronomical Observatory (Australia)
Kenneth Freeman, Mount Stromlo Observatory, Australian National Univ. (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)
Anthony Heng, Australian Astronomical Observatory (Australia)
Damien Jones, Prime Optics (Australia)
Chiaki Kobayashi, Univ. of Hertfordshire (United Kingdom)
Urs Klauser, Australian Astronomical Observatory (Australia)
Yuriy Kondrat, Australian Astronomical Observatory (Australia)
Jon Lawrence, Australian Astronomical Observatory (Australia)
Steve Lee, Australian Astronomical Observatory (Australia)
Darren Mathews, Australian Astronomical Observatory (Australia)
Don Mayfield, Australian Astronomical Observatory (Australia)
Stan Miziarski, Australian Astronomical Observatory (Australia)
Guy J. Monnet, 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)
Andrew Sheinis, Australian Astronomical Observatory (Australia)
Keith Shortridge, Australian Astronomical Observatory (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)
Denis Whittard, Australian Astronomical Observatory (Australia)
Elisabeth Wylie de Boer, Mount Stromlo Observatory, Australian National Univ. (Australia)
Pascal Xavier, Australian Astronomical Observatory (Australia)
Jessica Zheng, Australian Astronomical Observatory (Australia)
Ross Zhelem, Australian Astronomical Observatory (Australia)
Daniel Zucker, Australian Astronomical Observatory (Australia)
Macquarie Univ. (Australia)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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