Wavefront sensing over a 20-arcmin field in the ULTIMATE-Subaru Ground Layer Adaptive Optics system
Wavefront sensing over a 20-arcmin field in the ULTIMATE-Subaru Ground Layer Adaptive Optics system
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ULTIMATE-Subaru 地面层自适应光学系统中 20 弧分场的波前传感
DOI：
10.1117/12.2627738
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发表时间：
2022
影响因子：
5.4
通讯作者：
C. d’Orgeville
中科院分区：
文献类型：
--
作者：
N. Martínez;N. Herrald;D. Chandler;D. Haynes;Andrew W. Kruse;Wasantha Ramasundara;F. Rigaut;J. Bernard;T. Travouillon;Israel J. Vaughn;Y. Minowa;Y. Ono;Yoko Tanaka;K. Terao;C. d’Orgeville
ULTIMATE地面层自适应光学（GLAO）系统是ULTIMATE-斯巴鲁的一部分，这是夏威夷斯巴鲁望远镜的下一代设施仪器项目。GLAO由斯巴鲁望远镜与东北大学，中央研究院天文和天体物理研究所（ASIAA）和澳大利亚国立大学（ANU）合作领导。澳大利亚国立大学目前正在设计激光引导星星设施和波前适配器法兰，其中包括四个激光引导星星波前传感器和四个自然引导星星波前传感器。GLAO Wavefront Adaptor Flange将为2027年安装在Subaru Cassegrain焦点上的宽视场成像仪（WFI）仪器提供自适应光学功能。四个激光制导星星波前传感器安装在一个装配的钢结构上，能够采集直径高达20弧分的LGS波前。每个WFS的设计也考虑了望远镜的光学像差和非远心。NGS实例由四个用于倾斜和焦点测量的Natural Guide星星波前传感器组成。在本文中，我们提出了一个概述GLAO波前适配器法兰，包括LGS和NGS实例的光学机械组件的初步设计，和机构控制系统，使精细采集的引导星在广泛的巡逻领域的GLAO系统。
The ULTIMATE Ground Layer Adaptive Optics (GLAO) system is part of ULTIMATE-Subaru, the next generation facility instrumentation project at the Subaru telescope in Hawaii. GLAO is led by the Subaru Telescope in collaboration with Tohoku University, Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), and the Australian National University (ANU). ANU is currently designing the Laser Guide Star Facility and the Wavefront Adaptor Flange with four Laser Guide Star wavefront sensors, and four Natural Guide Star wavefront sensors. The GLAO Wavefront Adaptor Flange will provide Adaptive Optics capability to the wide-field imager (WFI) instrument to be installed at the Subaru Cassegrain focus in 2027. Four Laser Guide Star wavefront sensors mounted over a fabricated steel structure enable the acquisition of LGS asterisms of up to 20 arcmin in diameter. Each WFS has been designed to also account for the telescope optical aberrations and the non-telecentricity. The NGS instance consists of four Natural Guide Star wavefront sensors for tip-tilt and focus measurement. In this paper, we present an overview of the GLAO Wavefront Adaptor Flange including the preliminary design for the opto-mechanical assembly of both LGS and NGS instances, and the mechanisms control system that enables fine acquisition of the guide stars over the wide patrol field of the GLAO system.