Development of a wide field spherical aberration corrector for the Hobby Eberly Telescope: Design, fabrication and alignment

Chang Jin Oh, Eric Frater, Andrew E. Lowman, Peng Su, Chunyu Zhao, Ping Zhou, James H. Burge

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

2 Scopus citations

Abstract

A 4-mirror prime focus corrector is under development to provide seeing-limited images for the 10-m aperture Hobby- Eberly Telescope (HET) over a 22 arcminute wide field of view. The images created by the spherical primary mirror are aberrated with 13 arcmin diameter point spread function. The University of Arizona is developing the 4-mirror wide field corrector to compensate the aberrations from the primary mirror and present seeing limited imaged to the pickoffs for the fiber-fed spectrographs. The requirements for this system pose several challenges, including optical fabrication of the aspheric mirrors, system alignment, and operational mechanical stability. This paper presents current status of the program which covers fabrication of mirrors and structures and pretest result from the alignment of the system.

Original languageEnglish (US)
Title of host publicationGround-Based and Airborne Telescopes V
EditorsHelen J. Hall, Larry M. Stepp, Roberto Gilmozzi
PublisherSPIE
ISBN (Electronic)9780819496133
DOIs
StatePublished - Jan 1 2014
EventGround-Based and Airborne Telescopes V - Montreal, Canada
Duration: Jun 22 2014Jun 27 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9145
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherGround-Based and Airborne Telescopes V
CountryCanada
CityMontreal
Period6/22/146/27/14

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Keywords

  • Aberration
  • Alignment
  • Computer Generated Hologram
  • Hobby Eberly Telescope
  • Wide Field Corrector

ASJC Scopus subject areas

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

Cite this

Oh, C. J., Frater, E., Lowman, A. E., Su, P., Zhao, C., Zhou, P., & Burge, J. H. (2014). Development of a wide field spherical aberration corrector for the Hobby Eberly Telescope: Design, fabrication and alignment. In H. J. Hall, L. M. Stepp, & R. Gilmozzi (Eds.), Ground-Based and Airborne Telescopes V [914509] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9145). SPIE. https://doi.org/10.1117/12.2056879