Delivery, installation, on-sky verification of the hobby eberly telescope wide field corrector

Hanshin Lee, Gary J. Hill, John M. Good, Brian L. Vattiat, Matthew Shertrone, Jerry Martin, Emily Schroeder, Herman Kriel, Chang Jin Oh, Eric Frater, Bryan K. Smith, James H. Burge

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations


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).

Original languageEnglish (US)
Title of host publicationGround-Based and Airborne Telescopes VI
EditorsHeather K. Marshall, Helen J. Hall, Roberto Gilmozzi
ISBN (Electronic)9781510601918
StatePublished - 2016
EventGround-Based and Airborne Telescopes VI - Edinburgh, United Kingdom
Duration: Jun 26 2016Jul 1 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherGround-Based and Airborne Telescopes VI
Country/TerritoryUnited Kingdom


  • Delivery
  • Hobby eberly telescope
  • Installation
  • Onsky verification
  • Wide field corrector

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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