MRI: Development of a Fast and Flexible Adaptive Optics Controller

MRI：开发快速灵活的自适应光学控制器

• 批准号: 1727071
• 负责人: Peter Wizinowich
• 金额: $ 179.52万
• 依托单位: California Association for Research in Astronomy
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-10-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1727071&HistoricalAwards=false
• 关键词: MRI; Development; Fast; Flexible; Adaptive

This Major Research Instrumentation award will support a significant upgrade to Adaptive Optics [AO] system on the 10 meter Keck II telescope in Hawaii. Keck Observatory pioneered a new era of ground-based astronomy with a natural guide star system in 1999 and was last upgraded - to a laser guide star system - in 2007. Adaptive optics allows ground-based telescopes to overcome distortions induced by Earth's atmosphere and thereby achieve nearly the same spatial resolution as a space-based telescope of similar size. The upgraded Keck II AO system will enable a wide range of scientific studies and could serve as a springboard for future advanced AO instrumentation within the larger astronomical community. Keck Observatory provides telescope access to the astronomical community through an open-access agreement and through extensive collaborations with astronomers at their partner institutions. It plays a major role in training the next generation of graduate students and postdoctoral researchers, and they participate with other observatories in Hawaii in the Akamai workforce initiative, which provides scientific and technical internship opportunities to native Hawaiians.The upgrade will include modern wave front sensor camera and a faster real-time controller computer. This proposal builds on considerable related progress with the Keck AO systems, which will have an even larger impact with the bandwidth improvement. These include the implementation of a sodium- wavelength fiber laser and the launch of this laser from behind the Keck telescope secondary mirror (to reduce perspective elongation), and the current implementations of a near-infrared pyramid wavefront sensor and an AO-fed single mode fiber feed to NIRSPEC (to support exoplanet detection and characterization). The new hardware will provide a 1 magnitude sensitivity gain and allow the telescope to perform near its diffraction limit.

这项重大研究仪器奖将支持对位于夏威夷的10米凯克II望远镜上的自适应光学[AO]系统进行重大升级。凯克天文台在1999年开创了一个新的地基天文学时代，使用了一个自然引导星星系统，并在2007年升级为激光引导星星系统。 自适应光学使地面望远镜能够克服地球大气层引起的扭曲，从而实现与类似大小的天基望远镜几乎相同的空间分辨率。 升级后的Keck II AO系统将能够进行广泛的科学研究，并可以作为更大天文学界未来先进AO仪器的跳板。凯克天文台通过开放获取协议以及与合作机构的天文学家进行广泛合作，向天文学界提供望远镜使用权。 它在培养下一代研究生和博士后研究人员方面发挥着重要作用，他们与夏威夷的其他观测站一起参与Akamai劳动力计划，为夏威夷当地人提供科学和技术实习机会。升级将包括现代波前传感器相机和更快的实时控制器计算机。该提案建立在Keck AO系统的相当大的相关进展基础上，这将对带宽的改善产生更大的影响。这些包括钠波长光纤激光器的实现和从凯克望远镜次镜后面发射该激光器（以减少透视伸长），以及近红外金字塔波前传感器和向NIRSPEC的AO馈电单模光纤馈电的当前实现（以支持系外行星探测和表征）。新的硬件将提供1个星等的灵敏度增益，并允许望远镜接近其衍射极限。

项目成果

Keck adaptive optics facility: real time controller upgrade

Keck 自适应光学设施：实时控制器升级

• DOI: 10.1117/12.2629614
• 发表时间: 2022
• 期刊: SPIE Astronomical Telescopes + Instrumentation
• 作者: Chin, Jason C.;Cetre, Sylvain;Wizinowich, Peter;Ragland, Sam;Lilley, Scott J.;Wetherell, Ed;Surendran, Avinash;Correia, Carlos M.;Marin, Eduardo;Biasi, Roberto
• 通讯作者: Biasi, Roberto

Keck all sky precision adaptive optics: project overview

Keck 全天空精密自适应光学器件：项目概述

• DOI: 10.1117/12.2560017
• 发表时间: 2020
• 期刊: Proceedings of the SPIE
• 作者: Wizinowich, Peter L.;Chin, Jason C.;Correia, Carlos M.;Lu, Jessica R.;Brown, Thomas;Casey, Kelleen;Cetre, Sylvain;Delorme, Jacques-Robert;Gers, Luke;Hunter, Lisa
• 通讯作者: Hunter, Lisa