Enabling the next generation of Keck AO with the real time controller upgrade

Eduardo Marin; Jason C. Y. Chin; Sylvain Cetre; Peter Wizinowich; Sam Ragland; Ed Wetherell; Avinash Surendran; Antonin Bouchez; Jacques-Robert Delorme; Scott Lilley; James Lyke; Maxwell Service; Kevin Tsubota; Carlos Correia; Marcos van Dam; Roberto Biasi; Christian Patauner; Dietrich Pescoller; Karl Glazebrook; Andrew Jameson; Will Gauvin; Francois Rigaut; Damien Gratadour; Julien Bernard

doi:10.1117/12.3016792

27 August 2024 Enabling the next generation of Keck AO with the real time controller upgrade

Eduardo Marin, Jason C. Y. Chin, Sylvain Cetre, Peter Wizinowich, Sam Ragland, Ed Wetherell, Avinash Surendran, Antonin Bouchez, Jacques-Robert Delorme, Scott Lilley, James Lyke, Maxwell Service, Kevin Tsubota, Carlos Correia, Marcos van Dam, Roberto Biasi, Christian Patauner, Dietrich Pescoller, Karl Glazebrook, Andrew Jameson, Will Gauvin, Francois Rigaut, Damien Gratadour, Julien Bernard

Author Affiliations +

Proceedings Volume 13097, Adaptive Optics Systems IX; 1309760 (2024) https://doi.org/10.1117/12.3016792
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The Real Time Controllers (RTCs) for the W. M. Keck Observatory Adaptive Optics (AO) systems have been upgraded from a Field Programmable Gate Array (FPGA) to a Graphics Processing Unit (GPU) based solution. The previous RTCs, operating since 2007, had reached their limitations after upgrades to support new hardware including an Infra-Red (IR) Tip/Tilt (TT) Wave Front Sensor (WFS) on Keck I and a Pyramid WFS on Keck II. The new RTC, fabricated by a Microgate-led consortium with SUT leading the computation engine development, provides a flexible platform that improves processing bandwidth and allows for easier integration with new hardware and control algorithms. Along with the new GPU-based RTC, the upgrade includes a new hardware Interface Module (IM), new OCAM2K EMCCD cameras, and a new Telemetry Recording Server (TRS). The first system upgrade to take advantage of the new RTC is the Keck I All-sky Precision Adaptive Optics (KAPA) Laser Tomography AO (LTAO) system, which uses the larger and more sensitive OCAM2K EMCCD camera, tomographic reconstruction from four Laser Guide Stars (LGS), and improvements to the IR TT WFS. On Keck II the new RTC will enable a new higher-order Deformable Mirror (DM) as part of the HAKA (High order Advanced Keck Adaptive optics) project, which will also use an EMCCD camera. In the future, the new RTC will allow the possibility for new developments such as the proposed ‘IWA (Infrared Wavefront sensor Adaptive optics) system. The new RTC saw first light in 2021. The Keck I system was released for science observations in late 2023, with the Keck II system released for science in early 2024.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Eduardo Marin, Jason C. Y. Chin, Sylvain Cetre, Peter Wizinowich, Sam Ragland, Ed Wetherell, Avinash Surendran, Antonin Bouchez, Jacques-Robert Delorme, Scott Lilley, James Lyke, Maxwell Service, Kevin Tsubota, Carlos Correia, Marcos van Dam, Roberto Biasi, Christian Patauner, Dietrich Pescoller, Karl Glazebrook, Andrew Jameson, Will Gauvin, Francois Rigaut, Damien Gratadour, and Julien Bernard "Enabling the next generation of Keck AO with the real time controller upgrade", Proc. SPIE 13097, Adaptive Optics Systems IX, 1309760 (27 August 2024); https://doi.org/10.1117/12.3016792

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