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Proceedings Paper

VIRUS early installation and commissioning
Author(s): Sarah E. Tuttle; Gary J. Hill; Brian L. Vattiat; Hanshin Lee; Niv Drory; Andreas Kelz; Jason Ramsey; Trent Peterson; Eva Noyola; Darren L. DePoy; Jennifer L. Marshall; Taylor S. Chonis; Gavin Dalton; Maximilian Fabricius; Daniel Farrow; John M. Good; Dionne M. Haynes; Briana Indahl; Thomas Jahn; Hermanus Kriel; Harald Nicklas; Francesco Montesano; Travis Prochaska; Richard D. Allen; Martin Landriau; Phillip J. MacQueen; Martin M. Roth; Richard Savage; Jan M. Snigula
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Paper Abstract

VIRUS is a massively replicated spectrograph built for HETDEX, the Hobby Eberly Telescope Dark Energy Experiment. It consists of 156 channels within 78 units fed by 34944 fibers over the 22 arcminute field of the upgraded HET. VIRUS covers a relatively narrow bandpass (350-550nm) at low resolution (R ~ 700) to target the emission of Lyman-alpha emitters (LAEs) for HETDEX. VIRUS is a first demonstration of industrial style assembly line replication in optical astronomy. Installation and testing of VIRUS units began in November of 2015. This winter we celebrated the first on sky instrument activity of the upgraded HET, using a VIRUS unit and LRS2-R (the upgraded facility Low Resolution Spectrograph for the HET). Here we describe progress in VIRUS installation and commissioning through June 2016. We include early sky data obtained to characterize spectrograph performance and on sky performance of the newly upgraded HET. As part of the instrumentation for first science light at the HET, the IFU fed spectrographs were used to test a full range of telescope system functionality including the field calibration unit (FCU).We also use placement of strategic IFUs to map the new HET field to the fiber placement, and demonstrate actuation of the dithering mechanism key to HETDEX observations.

Paper Details

Date Published: 4 August 2016
PDF: 7 pages
Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99081I (4 August 2016); doi: 10.1117/12.2231253
Show Author Affiliations
Sarah E. Tuttle, McDonald Observatory, The Univ. of Texas at Austin (United States)
Gary J. Hill, McDonald Observatory, The Univ. of Texas at Austin (United States)
Brian L. Vattiat, McDonald Observatory, The Univ. of Texas at Austin (United States)
Hanshin Lee, McDonald Observatory, The Univ. of Texas at Austin (United States)
Niv Drory, McDonald Observatory, The Univ. of Texas at Austin (United States)
Andreas Kelz, Leibniz-Institut für Astrophysik Potsdam (Germany)
Jason Ramsey, McDonald Observatory, The Univ. of Texas at Austin (United States)
Trent Peterson, McDonald Observatory, The Univ. of Texas at Austin (United States)
Eva Noyola, McDonald Observatory, The Univ. of Texas at Austin (United States)
Darren L. DePoy, Texas A&M Univ. (United States)
Jennifer L. Marshall, Univ. of Oxford (United Kingdom)
Taylor S. Chonis, McDonald Observatory, The Univ. of Texas at Austin (United States)
Gavin Dalton, Univ. of Oxford (United Kingdom)
Maximilian Fabricius, Max-Planck-Institut für extraterrestrische Physik (Germany)
Daniel Farrow, Max-Planck-Institut für extraterrestrische Physik (Germany)
John M. Good, McDonald Observatory, The Univ. of Texas at Austin (United States)
Dionne M. Haynes, Leibniz-Institut für Astrophysik Potsdam (Germany)
Briana Indahl, McDonald Observatory, The Univ. of Texas at Austin (United States)
Thomas Jahn, Leibniz-Institut für Astrophysik Potsdam (Germany)
Hermanus Kriel, McDonald Observatory, The Univ. of Texas at Austin (United States)
Harald Nicklas, Georg-August-Univ. Göttingen (Germany)
Francesco Montesano, Max-Planck-Institut für extraterrestrische Physik (Germany)
Travis Prochaska, Texas A&M Univ. (United States)
Richard D. Allen, Texas A&M Univ. (United States)
Martin Landriau, McDonald Observatory, The Univ. of Texas at Austin (United States)
Phillip J. MacQueen, McDonald Observatory, The Univ. of Texas at Austin (United States)
Martin M. Roth, Leibniz-Institut für Astrophysik Potsdam (Germany)
Richard Savage, McDonald Observatory, The Univ. of Texas at Austin (United States)
Jan M. Snigula, Max-Planck-Institut für extraterrestrische Physik (Germany)


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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