Advanced Wavefront Sensing Techniques for Next Generation Adaptive Optics Systems

用于下一代自适应光学系统的先进波前传感技术

• 批准号: RGPIN-2017-04995
• 负责人: Andersen, David
• 金额: $ 1.53万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=762919
• 关键词: Advanced; Wavefront; Sensing; Techniques; Next

Canada has committed funding and is a major partner of the Thirty Meter Telescope (TMT). When completed, TMT will usher in a new, exciting era of optical and near-infrared astronomy. To make the most of TMT, we will need to incorporate Adaptive Optics (AO) systems to compensate for turbulence in the atmosphere. AO on TMT should allow us to take high resolution images and integral field spectroscopy of everything from asteroids in our solar system, to planets around other stars, to stars orbiting around the black hole in the center of our Galaxy, to stars moving in the gravitational potential of other galaxies, to galaxies billions of light years away as they exist in the era of peak star formation, and to “first-light” objects from the early Universe.Our group at NRC is very active in designing NFIRAOS, the facility AO system for TMT and one of the flagship Canadian contributions. I serve as the NFIRAOS Project Scientist and NFIRAOS Project Manager. By serving in these leadership roles, I can provide students and postdocs a unique opportunity to contribute to a cutting edge AO instrument. In particular, by studying new wavefront sensing techniques, students supported by this NSERC Discovery Grant are well-placed for making significant contributions to AO science and will be highly desirable to employers as they seek future careers in research, academia or industry.In addition to my work on NFIRAOS, I supervise a lab at NRC Herzberg that contains two AO test benches. One of these benches is dedicated to exploring advanced wavefront sensors. It has ports that allow us to compare up to five different wavefronts sensors at once. We can compare the optical sensitivity, data processing algorithms, calibration methods and control laws for different flavours of wavefront sensors including Shack-Hartmann, pyramid, focal plane and non-linear curvature wavefront sensors. The second bench is a scaled down version of NFIRAOS which will allow students to study the calibration of a complex system including eight wavefront sensors and learn how the measurements from these wavefront sensors can be blended to provide the optimal correction. The long term benefits of studying wavefront sensors is clear: Research done now can have direct impact on the performance of NFIRAOS in eight years. It also keeps our group working with the most cutting edge optical devices and algorithms available. By keeping that edge, Canada will be well-placed for being a major partner in the next generation of AO systems for TMT and other Canadian observatories.

加拿大拥有资金，是30米望远镜（TMT）的主要合作伙伴。完成后，TMT将迎来一个新的，令人兴奋的光学和近红外天文学时代。为了充分利用TMT，我们将需要合并自适应光学（AO）系统以补偿大气中的湍流。 TMT上的AO应该使我们能够拍摄从太阳系中的小行星到其他恒星周围的小行星，到星系中心的黑洞周围绕行的星星，到在其他星系的引力中移动到其他星系，到达峰值的数十亿年，以及在峰值的年代，以及首先是“峰值”，以及首先是“峰值”的时代，从而，恒星在我们银河的重力中移动到最初的峰会，以及首先是“峰值”，以及首先是“峰值”的时代，从而， NRC非常积极地设计NFIRAOS，TMT的设施AO系统和加拿大旗舰供款之一。我担任NFIRAOS项目科学家兼NFIRAOS项目经理。通过担任这些领导角色，我可以为学生和博士后提供一个独特的机会，为尖端AO工具做出贡献。特别是，通过研究新的Wavefront感应技术，这项NSERC Discovery Grant支持的学生可以很好地为AO Science做出重大贡献，并且在雇主寻求研究​​，学术界或行业中的未来职业时，我将在我的Nfiraos工作中为Nrc Herzberg的NRC HERZBERG一项实验室的工作增加，其中包含两种AO测试Beenne。这些工作台之一致力于探索高级波前传感器。它的端口使我们可以一次比较多达五个不同的波前传感器。我们可以比较光学敏感性，数据处理算法，校准方法和控制定律，用于波前传感器的不同口味，包括Shack-Hartmann，Pyramid，焦平面，焦平面和非线性曲率波前传感器。第二个台面是Nfiraos的缩放版本，它将允许学生研究复杂系统的校准，其中包括八个波前传感器，并了解如何将这些波前传感器的测量值融合在一起以提供最佳的校正。研究波前传感器的长期好处很清楚：现在完成的研究可以直接影响八年来NFIRAOS的性能。它还使我们的小组使用最前沿的光学设备和可用算法。通过保持这一优势，加拿大将成为TMT和其他加拿大观察家的下一代AO系统的主要合作伙伴。