Manufacture of 8.4 m segments for the GMT primary mirror

H. M. Martin, R. Ceragioli, B. Jannuzi, D. W. Kim, J. S. Kingsley, K. Law, A. Loeff, R. D. Lutz, T. J. McMahon, S. Meyen, C. J. Oh, M. T. Tuell, S. N. Weinberger, S. C. West, R. Wortley

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

Abstract

The Richard F. Caris Mirror Lab at the University of Arizona continues production of 8.4 m lightweight honeycomb segments for the primary mirror of the Giant Magellan Telescope. GMT will have a center segment surrounded by six off-Axis segments, plus an additional off-Axis segment to allow continuous operation as segments are removed for coating. The second off-Axis segment was completed and accepted in 2019. We are currently polishing the optical surface of off-Axis Segment 3. We have completed work on the rear surfaces of Segment 4, the center segment, and offaxis Segment 5. We are assembling the mold for off-Axis Segment 6 with the spin-casting scheduled for March 2021.

Original languageEnglish (US)
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV
EditorsRamon Navarro, Roland Geyl
PublisherSPIE
ISBN (Electronic)9781510636897
DOIs
StatePublished - 2020
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020 - Virtual, Online, United States
Duration: Dec 14 2020Dec 22 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11451
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020
Country/TerritoryUnited States
CityVirtual, Online
Period12/14/2012/22/20

Keywords

  • Giant Magellan Telescope
  • aspheres
  • off-Axis
  • optical fabrication
  • optical testing
  • telescopes

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Manufacture of 8.4 m segments for the GMT primary mirror'. Together they form a unique fingerprint.

Cite this