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arXiv 1807.04729astro-ph.IMastro-ph.EP
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地面和space telescope任务中高对比度成像的日冕极波前控制系统的建模

Modeling coronagraphic extreme wavefront control systems for high contrast imaging in ground and space telescope missions

Jennifer Lumbres, Jared Males, Ewan Douglas, Laird Close, Olivier Guyon, Kerri Cahoy, Ashley Carlton, Jim Clark, David Doelman, Lee Feinberg, Justin Knight, Wes… 展开作者

Jennifer Lumbres, Jared Males, Ewan Douglas, Laird Close, Olivier Guyon, Kerri Cahoy, Ashley Carlton, Jim Clark, David Doelman, Lee Feinberg, Justin Knight, Weston Marlow, Kelsey Miller, Katie Morzinski, Emiel Por, Alexander Rodack, Lauren Schatz, Frans Snik, Kyle Van Gorkom, Michael Wilby

摘要:

高对比度成像(HCI)在地面和太空应用中检测系外行星的挑战可以通过极端自适应光学(ExAO)来应对,极端自适应光学是一种高阶自适应光学系统,可执行波前传感(WFS)和高速校正。我们描述了两种ExAO光学系统设计,分别用于地面望远镜和太空任务,并使用Python中的物理光学传播(POPPY)包中的角谱菲涅耳传播模块对其进行了检查。我们提出了一个端到端(E2 E)的MagAO-X仪器,ExAO系统能够提供6 $\times10^{-5}$可见光原始对比度的静态,非共同路径像差没有大气的模拟。我们提出了一个激光guidestar(LGS)伴侣航天器试验台演示,它使用远程信标,以增加可用于WFS和未来的大型空间望远镜的主孔径段的控制信号,提供了一个因素的10个因素的顺序改善放宽天文台的稳定性要求。LGS E2 E仿真提供了一个易于调整的模型,用于探索测试台设计和表征的参数、限制和权衡。

英文摘要:

The challenges of high contrast imaging (HCI) for detecting exoplanets for both ground and space applications can be met with extreme adaptive optics (ExAO), a high-order adaptive optics system that performs wavefront sensing (WFS) and correction at high speed. We describe two ExAO optical system designs, one each for ground-based telescopes and space-based missions, and examine them using the angular spectrum Fresnel propagation module within the Physical Optics Propagation in Python (POPPY) package. We present an end-to-end (E2E) simulation of the MagAO-X instrument, an ExAO system capable of delivering 6$\times10^{-5}$ visible-light raw contrast for static, noncommon path aberrations without atmosphere. We present a laser guidestar (LGS) companion spacecraft testbed demonstration, which uses a remote beacon to increase the signal available for WFS and control of the primary aperture segments of a future large space telescope, providing on order of a factor of ten factor improvement for relaxing observatory stability requirements. The LGS E2E simulation provides an easily adjustable model to explore parameters, limits, and trade-offs on testbed design and characterization.

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。

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