A laser-truss based optical alignment system on LBT

Andrew Rakich; Heejoo Choi; Christian Veillet; John M. Hill; Matthieu Bec; Yang Zhang; Trenton Brendel; Breann Sitarski; Michael Gardiner; Dae Wook Kim; Stephanie Rodriguez

doi:10.1117/12.2558013

13 December 2020 A laser-truss based optical alignment system on LBT

Andrew Rakich, Heejoo Choi, Christian Veillet, John M. Hill, Matthieu Bec, Yang Zhang, Trenton Brendel, Breann Sitarski, Michael Gardiner, Dae Wook Kim, Stephanie Rodriguez

Author Affiliations +

Proceedings Volume 11445, Ground-based and Airborne Telescopes VIII; 114450R (2020) https://doi.org/10.1117/12.2558013
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

Since 2017 LBTO, in partnership with GMTO, has been developing a laser-trussed based metrology system for the active alignment of telescope main optical components to each other and to instruments. The effort has addressed needs of both organizations; LBTO with the opportunity to assess the performance of a new technological approach to telescope alignment, and the GMTO with the opportunity to prototype and field-test a system that has been identified as a crucial "missing link" in the active-optics chain between open-loop modelling and wavefront-sensing for ELT-scale telescopes. Following two years of effort the positive results so far obtained have convinced LBTO, in 2019, to commence to develop an integrated operational active-optics system based on this technological approach. A team drawn from LBTO, Steward Observatory, GMTO, the Wyant College of Optical Sciences and Mersenne Optical Consulting are currently completing the first phase of this Telescope Metrology System (TMS). This paper shall describe the system in detail and report on progress, current status, and future goals.

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Andrew Rakich, Heejoo Choi, Christian Veillet, John M. Hill, Matthieu Bec, Yang Zhang, Trenton Brendel, Breann Sitarski, Michael Gardiner, Dae Wook Kim, and Stephanie Rodriguez "A laser-truss based optical alignment system on LBT", Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 114450R (13 December 2020); https://doi.org/10.1117/12.2558013

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