Rubin Observatory primary tertiary mirror cell assembly: final integration and commissioning

Felipe Daruich; Christian Aguilar; John Andrew; Claudio Araya; Karla Aubel; Dominique Boutigny; Erich Bugueno; Andy Clements; Franco Colleoni; Ken Daugherty; Peter Ferguson; Miguel Fernández; Manuel García; Robinson Godoy; Ron Harris; Andrea Jeremie; Brian Johnson; Yijung Kang; Petr Kubanek; Juan Lopez; Robert Lopez; Douglas Neill; Freddy Munoz; Ian Ordenes; HyeYun Park; Eddie Pineiro; Bruno Quint; Mario Rascon; Tom Reeve; Tiago Ribeiro; Mario Rivera; Felipe Rodrigues; Rodrigo Rojas; David Sanmartim; Jacques Sebag; Troy Shannon; Malhar Sonaniskar; Ioana Sotuela; Brian Stalder; Roberto Tighe; Sandrine Thomas; Jeff Urban; Tomislav Vucina; Stuart Weinberger; David Zeller

doi:10.1117/12.3036881

11 September 2024 Rubin Observatory primary tertiary mirror cell assembly: final integration and commissioning

Felipe Daruich, Christian Aguilar, John Andrew, Claudio Araya, Karla Aubel, Dominique Boutigny, Erich Bugueno, Andy Clements, Franco Colleoni, Ken Daugherty, Peter Ferguson, Miguel Fernández, Manuel García, Robinson Godoy, Ron Harris, Andrea Jeremie, Brian Johnson, Yijung Kang, Petr Kubanek, Juan Lopez, Robert Lopez, Douglas Neill, Freddy Munoz, Ian Ordenes, HyeYun Park, Eddie Pineiro, Bruno Quint, Mario Rascon, Tom Reeve, Tiago Ribeiro, Mario Rivera, Felipe Rodrigues, Rodrigo Rojas, David Sanmartim, Jacques Sebag, Troy Shannon, Malhar Sonaniskar, Ioana Sotuela, Brian Stalder, Roberto Tighe, Sandrine Thomas, Jeff Urban, Tomislav Vucina, Stuart Weinberger, David Zeller

Author Affiliations +

Proceedings Volume 13094, Ground-based and Airborne Telescopes X; 1309451 (2024) https://doi.org/10.1117/12.3036881
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The Simonyi Survey Telescope (formerly known as the Large Synoptic Survey Telescope) of the Rubin Observatory is an 8.4m telescope now in construction on Cerro Pachón, in Chile. This telescope has been designed to conduct a 10 years’ survey of the sky in which it will map the entire night sky every three nights. The Mirror Cell Assembly system is a 9x9m steel structure that provides positioning, support, figure correction and temperature control to the primary and tertiary mirror. It is composed of two main systems, the Support System and the Thermal Control System. The Support System provides positioning, support and figure control of the mirror as well as dynamic forces compensation. The Thermal Control System will control the bulk temperature and temperature variations throughout the mirror. The temperature variations produce thermal distortions of the mirror which produce image degrading distortion of the optical surface. Variations between the bulk temperature and the ambient degrade local seeing and can produce condensation. The mirror cell assembly was designed and build in Tucson, Arizona by the LSST engineering team, and was tested, to confirm correct integration, at the Richard F Caris Mirror Lab to confirm the optical performance of the system using the real glass mirror. After successful testing, the mirror cell assembly was disassembled, packed and shipped to the Cerro Pachón summit in Chile where it was integrated with the surrogate mirror, and installed on the telescope mount assembly (TMA) for system performance test. Once system performance test concluded, the mirror cell was transported to the maintenance level to remove the metal surrogate mirror, install the glass and coat. After coating the mirror, the mirror cell assembly will be integrated with the telescope mount assembly to conduct final testing and verification.

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Felipe Daruich, Christian Aguilar, John Andrew, Claudio Araya, Karla Aubel, Dominique Boutigny, Erich Bugueno, Andy Clements, Franco Colleoni, Ken Daugherty, Peter Ferguson, Miguel Fernández, Manuel García, Robinson Godoy, Ron Harris, Andrea Jeremie, Brian Johnson, Yijung Kang, Petr Kubanek, Juan Lopez, Robert Lopez, Douglas Neill, Freddy Munoz, Ian Ordenes, HyeYun Park, Eddie Pineiro, Bruno Quint, Mario Rascon, Tom Reeve, Tiago Ribeiro, Mario Rivera, Felipe Rodrigues, Rodrigo Rojas, David Sanmartim, Jacques Sebag, Troy Shannon, Malhar Sonaniskar, Ioana Sotuela, Brian Stalder, Roberto Tighe, Sandrine Thomas, Jeff Urban, Tomislav Vucina, Stuart Weinberger, and David Zeller "Rubin Observatory primary tertiary mirror cell assembly: final integration and commissioning", Proc. SPIE 13094, Ground-based and Airborne Telescopes X, 1309451 (11 September 2024); https://doi.org/10.1117/12.3036881

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