ULTIMATE-START: current status of the Subaru Tomography Adaptive optics Research experimenT
ULTIMATE-START: current status of the Subaru Tomography Adaptive optics Research experimenT
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最终开始：斯巴鲁断层扫描自适应光学研究实验的现状
DOI：
10.1117/12.2629652
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Yamamuro Tomoyasu
中科院分区：
文献类型：
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作者：
Terao Koki;Akiyama Masayuki;Minowa Yosuke;Ono Yoshito;Ogane Hajime;Akasawa Takumi;Oya Shin;Yamamuro Tomoyasu
我们目前的状态的ULTIMATE斯巴鲁层析自适应光学研究实验（ULTIMATE开始）项目，即将推出的激光层析自适应光学（LTAO）系统的斯巴鲁望远镜。本项目的主要目标是实现近红外波段和600 nm以上可见光波段的高斯特列尔比声光校正。我们的LTAO系统将使用四个32 × 32 Shack Hartmann波前传感器（SH-WFS）和四个激光引导星（LGS）。LTAO WFS将安装在AO 188之后，AO 188是斯巴鲁望远镜Nasmyth平台上的当前AO系统。我们将使用AO 188的低阶WFS和DM进行具有自然引导星星（NGS）和波前校正的Tip-Tips测量。AO 188的DM将升级为3228元素DM。LTAO WFS系统的组装已于二零二二年完成。目前WFS数据采集和层析波阵面（WF）估计测试正在进行中。我们还进行了测试观察的原型单SH-WFS单位与NGS和LGS与斯巴鲁望远镜。安装了一套新的激光发射系统。一个LGS正在进行开放使用观测的天空性能验证，并将在2022年安装四个LGS系统，这些系统可以制作直径为10-40 arcsec的望远镜。整个LTAO系统的第一盏灯计划在2023年初。
We present the current status of the ULTIMATE-Subaru Tomography Adaptive optics Research experimenT (ULTIMATE-START) project, an upcoming laser tomography adaptive optics (LTAO) system on the Subaru telescope. The main goal of this project is to realize high Strehl ratio AO correction not only in near-infrared bands but also in visible bands above 600 nm. Our LTAO system will be operated with four 32 × 32 Shack Hartmann wavefront sensors (SH-WFSs) and four laser guide stars (LGSs). The LTAO WFSs will be installed behind AO188, which is the current AO system on the Nasmyth platform of the Subaru telescope. We will use the low-order WFS and DM of AO188 for Tip-Tilt measurements with a natural guide star (NGS) and wavefront correction. The DM of AO188 will be upgraded to a 3228 element DM. Assembling of the LTAO WFS system has completed in 2022. Currently WFS data acquisition and tomographic wavefront (WF) estimation testing are underway. We also performed test observations of a prototype single SH-WFS unit with a NGS and LGS with the Subaru telescope. A new laser launching system has been installed. A single LGS is under on-sky performance verification for the open-use observations, and four LGS system, which can make an asterism with 10-40 arcsec diameter, will be installed in 2022. The first light of the entire LTAO system is planned in early 2023.