Performance of the updated Southern African Large Telescope prime-focus guidance system

Janus D. Brink; Ockert J. Strydom; Stephen N. Hulme; Anthony R. Koeslag; Deneys S. Maartens; Keith R. J. Browne; Eben P. Wiid

doi:10.1117/12.2313120

10 July 2018 Performance of the updated Southern African Large Telescope prime-focus guidance system

Janus D. Brink, Ockert J. Strydom, Stephen N. Hulme, Anthony R. Koeslag, Deneys S. Maartens, Keith R. J. Browne, Eben P. Wiid

Author Affiliations +

Proceedings Volume 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III; 1070668 (2018) https://doi.org/10.1117/12.2313120
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

Major improvements to the SALT prime focus guidance system have been implemented over the last two years in the form of a new compact, modular and removable system with high optical efficiency. A double-probe positioning system allows both translation and rotation guidance, while optional beam-splitting allows closed-loop focus feedback to stabilise the focal plane. The features of this new system, its mechanical and optical performance and its control system architecture are presented.

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Janus D. Brink, Ockert J. Strydom, Stephen N. Hulme, Anthony R. Koeslag, Deneys S. Maartens, Keith R. J. Browne, and Eben P. Wiid "Performance of the updated Southern African Large Telescope prime-focus guidance system", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 1070668 (10 July 2018); https://doi.org/10.1117/12.2313120

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