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    Manufacture of primary mirror segments for the Giant Magellan Telescope

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    107060V.pdf
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    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
    Show allShow less
    Affiliation
    Univ Arizona, Steward Observ
    Univ Arizona, Ctr Opt Sci
    Issue Date
    2018
    Keywords
    Giant Magellan Telescope
    telescopes
    optical fabrication
    optical testing
    off-axis
    aspheres
    
    Metadata
    Show full item record
    Publisher
    SPIE-INT SOC OPTICAL ENGINEERING
    Citation
    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/10.1117/12.2312935
    Journal
    ADVANCES IN OPTICAL AND MECHANICAL TECHNOLOGIES FOR TELESCOPES AND INSTRUMENTATION III
    Rights
    © 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
    9781510619654
    9781510619661
    DOI
    10.1117/12.2312935
    10.1117/12.2312935.5807225854001
    Version
    Final published version
    Sponsors
    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 Chicago
    Additional 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.full
    https://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
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