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

被引：0

作者：

Marin, Eduardo ^{[1
]}

Chin, Jason C. Y. ^{[1
]}

Cetre, Sylvain ^{[2
]}

Wizinowich, Peter ^{[1
]}

Ragland, Sam ^{[1
]}

Wetherell, Ed ^{[1
]}

Surendran, Avinash ^{[1
]}

Bouchez, Antonin ^{[1
]}

Delorme, Jacques-Robert ^{[1
]}

Lilley, Scott ^{[1
]}

Lyke, James ^{[1
]}

Service, Maxwell ^{[1
]}

Tsubota, Kevin ^{[1
]}

Correia, Carlos ^{[3
]}

van Dam, Marcos ^{[4
]}

Biasi, Roberto ^{[5
]}

Pataunar, Christian ^{[5
]}

Pescoller, Dietrich ^{[5
]}

Glazebrook, Karl ^{[6
]}

Jameson, Andrew ^{[6
]}

Gauvin, Will ^{[6
]}

Rigaut, Francois ^{[7
]}

Gratadour, Damien ^{[8
]}

Bernard, Julien ^{[7
]}

机构：

[1] WM Keck Observ, Waimea, HI 96743 USA

[2] Wakea Consulting, Grenoble, France

[3] Space Odt, Porto, Portugal

[4] Flat Wavefronts, Christchurch, New Zealand

[5] Microgate Srl, Bolzano, Italy

[6] Swinburne Univ Technol, Melbourne, Vic, Australia

[7] Australian Natl Univ, Canberra, ACT, Australia

[8] Univ PSL, Sorbonne Univ, Univ Paris Cite, LESIA,Obervatorie Paris, Paris, France

来源：

ADAPTIVE OPTICS SYSTEMS IX | 2024年 / 13097卷

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

Adaptive Optics; Real Time Controller; Wavefront Sensor; Keck;

D O I：

10.1117/12.3016792

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

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.

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