Subaru AO188 upgrade phase 1: integration of the new real-time system

Christophe Clergeon; Yosuke Minowa; Olivier Guyon; Yoshito Ono; Etsuko Mieda; Nour Skaf; Hiroshige Yoshida; Yukata Hayano; Takashi Hattori; Kiaina Schubert; Ananya Sahoo; Julien Lozi; Sebastien Vievard

doi:10.1117/12.2314254

20 September 2018 Subaru AO188 upgrade phase 1: integration of the new real-time system

Christophe Clergeon, Yosuke Minowa, Olivier Guyon, Yoshito Ono, Etsuko Mieda, Nour Skaf, Hiroshige Yoshida, Yukata Hayano, Takashi Hattori, Kiaina Schubert, Ananya Sahoo, Julien Lozi, Sebastien Vievard

Author Affiliations +

Proceedings Volume 10703, Adaptive Optics Systems VI; 1070337 (2018) https://doi.org/10.1117/12.2314254
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The AO188 Single Conjugate facility AO system at Subaru Telescope delivers diffraction-limited images in near-IR in natural and laser guide star modes. We have recently started a major upgrade of AO188 to fulfill the high performance requirements of its downstream instruments, including the Subaru Coronagraphic Extreme-AO. The first phase of this upgrade started in 2017 with the integration of a new real time computer (RTC) and real time system (RTS) CACAO(https://github.com/CACAO-org/CACAO), an open-source real-time software for adaptive optics developed collaboratively and used extensively by the SCExAO instrument. This major upgrade will enable loop optimization, predictive control and include diagnosis tools, therefore improving the performance and stability of AO188 and its downstream instrument module. This paper introduces the architecture of the new RTS describing the different steps we followed to adapt CACAO to our AO interfaces and aging hardware, in preparation of our first engineering tests on-sky achieved successfully on July 23rd 2018.

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Christophe Clergeon, Yosuke Minowa, Olivier Guyon, Yoshito Ono, Etsuko Mieda, Nour Skaf, Hiroshige Yoshida, Yukata Hayano, Takashi Hattori, Kiaina Schubert, Ananya Sahoo, Julien Lozi, and Sebastien Vievard "Subaru AO188 upgrade phase 1: integration of the new real-time system", Proc. SPIE 10703, Adaptive Optics Systems VI, 1070337 (20 September 2018); https://doi.org/10.1117/12.2314254

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