The Planet as Exoplanet Analog Spectrograph (PEAS): design and first-light

Ground-based and Airborne Instrumentation for Astronomy VIII Pub Date : 2020-12-15 DOI:10.1117/12.2560706

E. Martin, A. Skemer, M. Radovan, S. Allen, D. Black, W. Deich, J. Fortney, G. Kruglikov, N. MacDonald, David Marques, Evan C. Morris, A. Phillips, Dale Sandford, Julissa Villalobos Valencia, Jason J. Wang, Pavl Zachary

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引用次数: 1

Abstract

Exoplanets are abundant in our galaxy and yet characterizing them remains a technical challenge. Solar System planets provide an opportunity to test the practical limitations of exoplanet observations with high signal-to-noise data that we cannot access for exoplanets. However, data on Solar System planets differ from exoplanets in that Solar System planets are spatially resolved while exoplanets are unresolved point-sources. We present a novel instrument designed to observe Solar System planets as though they are exoplanets, the Planet as Exoplanet Analog Spectrograph (PEAS). PEAS consists of a dedicated 0.5-m telescope and off-the-shelf optics, located at Lick Observatory. PEAS uses an integrating sphere to disk-integrate light from the Solar System planets, producing spatially mixed light more similar to the spectra we can obtain from exoplanets. This paper describes the general system design and early results of the PEAS instrument.

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行星作为系外行星模拟摄谱仪(豌豆):设计和初光

太阳系外行星在我们的星系中非常丰富，但描述它们的特征仍然是一项技术挑战。太阳系行星提供了一个机会来测试系外行星观测的实际局限性，我们无法获得系外行星的高信噪比数据。然而，太阳系行星的数据与系外行星的数据不同，太阳系行星是空间分辨的，而系外行星是未分辨的点源。我们提出了一种新的仪器设计来观察太阳系行星，好像他们是系外行星，行星系外行星模拟光谱仪(豌豆)。豌豆由一个专用的0.5米望远镜和现成的光学元件组成，位于利克天文台。豌豆使用一个积分球来整合来自太阳系行星的光，产生空间混合光，更类似于我们可以从系外行星获得的光谱。本文介绍了该仪器的总体系统设计和初步成果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ground-based and Airborne Instrumentation for Astronomy VIII

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