用PICTURE-C进行日冕仪焦平面波前校正的气球飞行演示

IF 1.7 3区工程技术 Q2 ENGINEERING, AEROSPACE

Journal of Astronomical Telescopes Instruments and Systems Pub Date : 2023-04-01 DOI:10.1117/1.JATIS.9.2.025005

Christopher Mendillo, K. Hewawasam, J. Martel, Thaddeus Potter, T. Cook, S. Chakrabarti

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引用次数: 0

摘要

摘要利用可回收实验日冕仪(photo - c)任务的行星成像概念测试平台，旨在使用直径60厘米的离轴望远镜和矢量涡旋日冕仪，从高空气球直接对附近恒星周围的碎片盘和外黄道带尘埃进行成像。2022年9月28日，在新墨西哥州萨姆纳堡的第二次飞行中，photo - c首次成功地使用其高阶和低阶波前控制系统在近空间环境中的天文台上执行焦平面波前校正。日冕仪实现了5 × 10−6的适度宽带(20%)对比度，其性能受到动态指向瞬态的限制。低阶波前控制系统在30秒时间尺度上实现了1毫角秒(mas)均方根(RMS)的光学指向稳定。

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Balloon flight demonstration of coronagraph focal plane wavefront correction with PICTURE-C

Abstract. The Planetary Imaging Concept Testbed Using a Recoverable Experiment - Coronagraph (PICTURE-C) mission is designed to directly image debris disks and exozodiacal dust around nearby stars from a high-altitude balloon using a 60 cm diameter off-axis telescope and a vector vortex coronagraph. During its second flight from Fort Sumner, New Mexico, on September 28, 2022, PICTURE-C successfully used its high and low-order wavefront control systems to perform focal plane wavefront correction for the first time on an observatory in a near-space environment. The coronagraph achieved a modest broadband (20%) contrast of 5 × 10 − 6, with performance limited by dynamic pointing transients. The low-order wavefront control system achieved optical pointing stabilization of 1 milliarcseconds (mas) root mean squared (RMS) over 30 second timescales.

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来源期刊

Journal of Astronomical Telescopes Instruments and Systems Engineering-Mechanical Engineering

CiteScore

4.40

自引率

13.00%

发文量

119

期刊介绍： The Journal of Astronomical Telescopes, Instruments, and Systems publishes peer-reviewed papers reporting on original research in the development, testing, and application of telescopes, instrumentation, techniques, and systems for ground- and space-based astronomy.