arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2407.13019astro-ph.IM
收藏

MagAO-X 二期升级:新型 1000 执行器后自适应光学变形镜的安装与首次天文观测结果

MagAO-X Phase II Upgrades: Implementation and First On-Sky Results of a New Post-AO 1000 Actuator Deformable Mirror

Jay K. Kueny, Kyle Van Gorkom, Maggie Kautz, Sebastiaan Haffert, Jared R. Males, Alex Hedglen, Laird Close, Eden McEwen, Jialin Li, Joseph D. Long, Warren Foste… 展开作者

Jay K. Kueny, Kyle Van Gorkom, Maggie Kautz, Sebastiaan Haffert, Jared R. Males, Alex Hedglen, Laird Close, Eden McEwen, Jialin Li, Joseph D. Long, Warren Foster, Logan Pearce, Avalon McLeod, Jhen Lumbres, Olivier Guyon, Joshua Liberman

AI总结:

MagAO-X 升级至 1000 执行器变形镜,用于非共路像差校正,实现 10 kHz 校正速度,并通过焦点多样性相位恢复和隐式电场共轭算法提升深对比度成像性能。

摘要:

MagAO-X 是 6.5 米麦哲伦克莱望远镜的极端日冕自适应光学(AO)仪器,目前正在进行全面的升级。该仪器的一项创新是专门用于日冕仪臂内非共路像差校正(NCPC)的变形镜(DM)。我们最近将 97 执行器的 NCPC 变形镜升级为 1000 执行器的波士顿微机器 Kilo-DM,其作用包括:(1)校正阻碍小内工作角度性能的非共路像差;(2)促进焦平面波前控制算法(如电场共轭);(3)实现 10 kHz 的校正速度(从 2 kHz 提升),以辅助后自适应光学实时低阶波前控制。我们介绍了在 MagAO-X 上表征和安装该新型变形镜的细节,作为我们为改善反射光中星周天体成像深对比度性能所做努力的一部分。安装前程序包括使用 Twyman-Green 干涉仪构建交互矩阵,以闭环方式将变形镜表面命令为平坦状态,从而无缝集成到仪器中。随着这款新型 NCPC 变形镜的安装,我们报告了 2024 年 3 月至 5 月 MagAO-X 观测运行中,针对准静态散斑去除的焦点多样性相位恢复算法和针对原位 Strehl 比优化的隐式电场共轭算法的天文观测结果。

英文摘要:

MagAO-X is the extreme coronagraphic adaptive optics (AO) instrument for the 6.5-meter Magellan Clay telescope and is currently undergoing a comprehensive batch of upgrades. One innovation that the instrument features is a deformable mirror (DM) dedicated for non-common path aberration correction (NCPC) within the coronagraph arm. We recently upgraded the 97 actuator NCPC DM with a 1000 actuator Boston Micromachines Kilo-DM which serves to (1) correct non-common path aberrations which hamper performance at small inner-working angles, (2) facilitate focal-plane wavefront control algorithms (e.g., electric field conjugation) and (3) enable 10 kHz correction speeds (up from 2 kHz) to assist post-AO, real-time low-order wavefront control. We present details on the characterization and installation of this new DM on MagAO-X as part of our efforts to improve deep contrast performance for imaging circumstellar objects in reflected light. Pre-installation procedures included use of a Twyman-Green interferometer to build an interaction matrix for commanding the DM surface, in closed-loop, to a flat state for seamless integration into the instrument. With this new NCPC DM now installed, we report on-sky results from the MagAO-X observing run in March -- May 2024 for the Focus Diversity Phase Retrieval and implicit Electric Field Conjugation algorithms for quasistatic speckle removal and in-situ Strehl ratio optimization, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑