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Proceedings Paper

Delivery, installation, on-sky verification of the Hobby Eberly Telescope wide field corrector
Author(s): Hanshin Lee; Gary J. Hill; John M. Good; Brian L. Vattiat; Matthew Shetrone; Herman Kriel; Jerry Martin; Emily Schroeder ; Chang Jin Oh; Eric Frater; Bryan Smith; James H. Burge
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Paper Abstract

The Hobby-Eberly Telescope (HET)†, located in West Texas at the McDonald Observatory, operates with a fixed segmented primary (M1) and has a tracker, which moves the prime-focus corrector and instrument package to track the sidereal and non-sidereal motions of objects. We have completed a major multi-year upgrade of the HET that has substantially increased the pupil size to 10 meters and the field of view to 22 arcminutes by deploying the new Wide Field Corrector (WFC), new tracker system, and new Prime Focus Instrument Package (PFIP). The focus of this paper is on the delivery, installation, and on-sky verification of the WFC. We summarize the technical challenges encountered and resolutions to overcome such challenges during the construction of the system. We then detail the transportation from Tucson to the HET, on-site ground verification test results, post-installation static alignment among the WFC, PFIP, and M1, and on-sky verification of alignment and image quality via deploying multiple wavefront sensors across 22 arcminutes field of view. The new wide field HET will feed the revolutionary new integral field spectrograph called VIRUS, in support of the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX), a new low resolution spectrograph (LRS2), an upgraded high resolution spectrograph (HRS2), and later the Habitable Zone Planet Finder (HPF).

Paper Details

Date Published: 8 August 2016
PDF: 20 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990646 (8 August 2016); doi: 10.1117/12.2231224
Show Author Affiliations
Hanshin Lee, McDonald Observatory, The Univ. of Texas at Austin (United States)
Gary J. Hill, McDonald Observatory, The Univ. of Texas at Austin (United States)
John M. Good, McDonald Observatory, The Univ. of Texas at Austin (United States)
Brian L. Vattiat, McDonald Observatory, The Univ. of Texas at Austin (United States)
Matthew Shetrone, Hobby-Eberly Telescope, The Univ. of Texas at Austin (United States)
Herman Kriel, McDonald Observatory, The Univ. of Texas at Austin (United States)
Hobby-Eberly Telescope, The Univ. of Texas at Austin (United States)
Jerry Martin, Hobby-Eberly Telescope, The Univ. of Texas at Austin (United States)
Emily Schroeder , Hobby-Eberly Telescope, The Univ. of Texas at Austin (United States)
Chang Jin Oh, College of Optical Sciences, The Univ. of Arizona (United States)
Eric Frater, College of Optical Sciences, The Univ. of Arizona (United States)
Bryan Smith, College of Optical Sciences, The Univ. of Arizona (United States)
James H. Burge, College of Optical Sciences, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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