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Proceedings Paper

Large Binocular Telescope M3 units design
Author(s): Daniele Gallieni; John M. Hill; Piero Salinari; Warren B. Davison; Enzo Anaclerio; Paolo G. Lazzarini
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Paper Abstract

We report on the design of the two tertiary mirrors of the Large Binocular Telescope. The tertiary mirrors are flat octagonal shaped 540 X 640 mm Hextex honeycombs made of Schott borosilicate. Each mirror cell is mounted on three linear actuators for the active control of the mirror pointing and for the adjustment of the telescope optical path length. Each tertiary mirror unit embeds a rotator stage to point at four different instrument stations on the telescope. Particular effort is developed to the optimization of the honeycomb mirror support system to minimize the optical surface RMS deformation at the different mirror attitudes.

Paper Details

Date Published: 2 August 2000
PDF: 8 pages
Proc. SPIE 4004, Telescope Structures, Enclosures, Controls, Assembly/Integration/Validation, and Commissioning, (2 August 2000); doi: 10.1117/12.393902
Show Author Affiliations
Daniele Gallieni, ADS International s.r.l. (Italy)
John M. Hill, Steward Observatory/Univ. of Arizona (United States)
Piero Salinari, Osservatorio Astrofisico di Arcetri (Italy)
Warren B. Davison, Steward Observatory/Univ. of Arizona (United States)
Enzo Anaclerio, ADS International s.r.l. (Italy)
Paolo G. Lazzarini, ADS International s.r.l. (Italy)


Published in SPIE Proceedings Vol. 4004:
Telescope Structures, Enclosures, Controls, Assembly/Integration/Validation, and Commissioning
Thomas A. Sebring; Torben Andersen, Editor(s)

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