Manufacture of primary mirror segments for the Giant Magellan Telescope
Author
Martin, Hubert M.Allen, Rich
Gasho, Victor
Jannuzi, Buell
Kim, Dae Wook
Kingsley, Jeffrey
Law, Kevin
Loeff, Adrian
Lutz, Randy
Tuell, Michael
Weinberger, Stuart
West, Steven C.
McMahon, Thomas
Oh, Chang Jin
Affiliation
Univ Arizona, Steward ObservUniv Arizona, Ctr Opt Sci
Issue Date
2018
Metadata
Show full item recordPublisher
SPIE-INT SOC OPTICAL ENGINEERINGCitation
H. M. Martin, R. Allen, V. Gasho, B. T. Jannuzi, D. W. Kim, J. S. Kingsley, K. Law, A. Loeff, R. D. Lutz, T. J. McMahon, C. J. Oh, M. T. Tuell, S. N. Weinberger, and S. C. West "Manufacture of primary mirror segments for the Giant Magellan Telescope", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107060V (10 July 2018); doi: 10.1117/12.2312935; https://doi.org/10.1117/12.2312935Rights
© 2018 SPIE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
The Richard F. Carts 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.ISSN
97815106196549781510619661
Version
Final published versionSponsors
GMTO Corporation; Arizona State University; Astronomy Australia Ltd; Australian National University; Carnegie Institution for Science, Harvard University; Korea Astronomy and Space Science Institute; Sao Paulo Research Foundation; Smithsonian Institution; University of Texas at Austin; Texas AM University; University of Arizona; University of ChicagoAdditional Links
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10706/2312935/Manufacture-of-primary-mirror-segments-for-the-Giant-Magellan-Telescope/10.1117/12.2312935.fullhttps://www.spiedigitallibrary.org/conference-presentations/10706/107060V/Manufacture-of-primary-mirror-segments-for-the-Giant-Magellan-Telescope/10.1117/12.2312935.5807225854001
ae974a485f413a2113503eed53cd6c53
10.1117/12.2312935