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LSST hardpoints final design, fabrication, and test
Author(s): Michael T. Booth; Andy Clements; Brian Johnson
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Paper Abstract

The Large Synoptic Survey Telescope (LSST) primary/tertiary mirror is an 8.4-meter cast borosilicate monolith. The hardpoints form a hexapod that is used to define the location of the M1M3 relative to the mirror cell, as the pneumatic figure actuators, which support the mass of the M1M3 during operation, are unable to define position. The hardpoints must have high stiffness, precise displacement control, and features to limit loads in all six degrees of freedom in order to protect the mirror. Assembly of the hardpoints and verification of the hardpoints and their requirements was undertaken in the summer and fall of 2017.

Paper Details

Date Published: 6 July 2018
PDF: 8 pages
Proc. SPIE 10700, Ground-based and Airborne Telescopes VII, 107003S (6 July 2018); doi: 10.1117/12.2312671
Show Author Affiliations
Michael T. Booth, Large Synoptic Survey Telescope (United States)
Andy Clements, Large Synoptic Survey Telescope (United States)
Brian Johnson, Large Synoptic Survey Telescope (United States)

Published in SPIE Proceedings Vol. 10700:
Ground-based and Airborne Telescopes VII
Heather K. Marshall; Jason Spyromilio; Roberto Gilmozzi, Editor(s)

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