Manufacture of primary mirror segments for the giant magellan telescope

H. M. Martin, R. Allen, V. Gasho, Buell Tomasson Jannuzi, D. W. Kim, Jeffrey S Kingsley, K. Law, A. Loeff, R. D. Lutz, T. J. McMahon, Chang Jin Oh, M. T. Tuell, S. N. Weinberger, S. C. West

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

2 Citations (Scopus)

Abstract

The Richard F. Caris Mirror Lab at the University of Arizona continues the 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 identical off-axis segments, plus an additional off-axis segment to allow continuous operation as segments are removed for coating. Production highlights of the last two years include the spin-casting of Segment 5, preliminary polishing of Segment 2, and completion of the rear surface processing for Segments 3 and 4. We completed a preliminary design of the significant modifications of the test systems required for Segment 4, the center segment. We finished an upgrade of the 8.4 m polishing machine; both the upgrade and experience gained with Segment 1 have contributed to much faster polishing convergence for Segment 2. Prior to polishing Segment 2, we verified the stability and accuracy of the measurement systems by re-measuring Segment 1, achieving good agreement among multiple independent tests as well as good agreement with the original acceptance tests of Segment 1.

Original languageEnglish (US)
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
EditorsRoland Geyl, Ramon Navarro
PublisherSPIE
Volume10706
ISBN (Print)9781510619654
DOIs
StatePublished - Jan 1 2018
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018 - Austin, United States
Duration: Jun 10 2018Jun 15 2018

Other

OtherAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018
CountryUnited States
CityAustin
Period6/10/186/15/18

Fingerprint

Polishing
Telescopes
Telescope
Mirror
Mirrors
telescopes
mirrors
Polishing machines
Acceptance tests
Casting
polishing
Coatings
Processing
Honeycomb
Test System
Measurement System
acceptability
Coating
Completion
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Keywords

  • Aspheres
  • Giant magellan telescope
  • 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

Cite this

Martin, H. M., Allen, R., Gasho, V., Jannuzi, B. T., Kim, D. W., Kingsley, J. S., ... West, S. C. (2018). Manufacture of primary mirror segments for the giant magellan telescope. In R. Geyl, & R. Navarro (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III (Vol. 10706). [107060V] SPIE. https://doi.org/10.1117/12.2312935

Manufacture of primary mirror segments for the giant magellan telescope. / Martin, H. M.; Allen, R.; Gasho, V.; Jannuzi, Buell Tomasson; Kim, D. W.; Kingsley, Jeffrey S; Law, K.; Loeff, A.; Lutz, R. D.; McMahon, T. J.; Oh, Chang Jin; Tuell, M. T.; Weinberger, S. N.; West, S. C.

Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III. ed. / Roland Geyl; Ramon Navarro. Vol. 10706 SPIE, 2018. 107060V.

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

Martin, HM, Allen, R, Gasho, V, Jannuzi, BT, Kim, DW, Kingsley, JS, Law, K, Loeff, A, Lutz, RD, McMahon, TJ, Oh, CJ, Tuell, MT, Weinberger, SN & West, SC 2018, Manufacture of primary mirror segments for the giant magellan telescope. in R Geyl & R Navarro (eds), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III. vol. 10706, 107060V, SPIE, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018, Austin, United States, 6/10/18. https://doi.org/10.1117/12.2312935
Martin HM, Allen R, Gasho V, Jannuzi BT, Kim DW, Kingsley JS et al. Manufacture of primary mirror segments for the giant magellan telescope. In Geyl R, Navarro R, editors, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III. Vol. 10706. SPIE. 2018. 107060V https://doi.org/10.1117/12.2312935
Martin, H. M. ; Allen, R. ; Gasho, V. ; Jannuzi, Buell Tomasson ; Kim, D. W. ; Kingsley, Jeffrey S ; Law, K. ; Loeff, A. ; Lutz, R. D. ; McMahon, T. J. ; Oh, Chang Jin ; Tuell, M. T. ; Weinberger, S. N. ; West, S. C. / Manufacture of primary mirror segments for the giant magellan telescope. Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III. editor / Roland Geyl ; Ramon Navarro. Vol. 10706 SPIE, 2018.
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