LSST hardpoints final design, fabrication, and test

Michael T. Booth; Andy Clements; Brian Johnson

doi:10.1117/12.2312671

6 July 2018 LSST hardpoints final design, fabrication, and test

Michael T. Booth, Andy Clements, Brian Johnson

Proceedings Volume 10700, Ground-based and Airborne Telescopes VII; 107003S (2018) https://doi.org/10.1117/12.2312671
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

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.

Citation Download Citation

Michael T. Booth, Andy Clements, and Brian Johnson "LSST hardpoints final design, fabrication, and test", Proc. SPIE 10700, Ground-based and Airborne Telescopes VII, 107003S (6 July 2018); https://doi.org/10.1117/12.2312671

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