27 July 2016 LSST secondary mirror system final design
Author Affiliations +
Abstract
The Large Synoptic Survey Telescope (LSST) has a 10 degrees square field of view which is achieved through a 3 mirror optical system comprised of an 8.4 meter primary, 3.5 meter secondary (M2) and a 5 meter tertiary mirror. The M2 is a 100mm thick meniscus convex asphere. The mirror surface is actively controlled by 72 axial electromechanical actuators (axial actuators). Transverse support is provided by 6 active tangential electromechanical actuators (tangent links). The final design has been completed by Harris Corporation. They are also providing the fabrication, integration and testing of the mirror cell assembly, as well as the figuring of the mirror. The final optical surface will be produced by ion figuring. All the actuators will experience 1 year of simulated life testing to ensure that they can withstand the rigorous demands produced by the LSST survey mission. Harris Corporation is providing optical surface metrology to demonstrate both the quality of the optical surface and the correctablility produced by the axial actuators.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Douglas R. Neill, Douglas R. Neill, Gregory Bogan, Gregory Bogan, Dale Zajac, Dale Zajac, Constanza Araujo , Constanza Araujo , William J. Gressler, William J. Gressler, Joe DeVries, Joe DeVries, Edward A. Hileman, Edward A. Hileman, Paul J. Lotz, Paul J. Lotz, Dave Mills, Dave Mills, Sandrine Thomas, Sandrine Thomas, Thomas A. Sebring, Thomas A. Sebring, Jacques Sebag, Jacques Sebag, Mike Warner, Mike Warner, Oliver Wiecha, Oliver Wiecha, } "LSST secondary mirror system final design", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 990667 (27 July 2016); doi: 10.1117/12.2234021; https://doi.org/10.1117/12.2234021
PROCEEDINGS
12 PAGES


SHARE
RELATED CONTENT

LSST primary/tertiary mirror cell assembly integration
Proceedings of SPIE (July 06 2018)
LSST Telescope primary/tertiary mirror cell assembly
Proceedings of SPIE (August 04 2010)
LSST secondary mirror assembly baseline design
Proceedings of SPIE (September 17 2012)
Control analysis of the TMT primary segment assembly
Proceedings of SPIE (July 10 2008)
The primary mirror system control software for the VST
Proceedings of SPIE (July 19 2010)

Back to Top