A highly stable spectrophotometric capability for the Origins Space Telescope (OST) Mid-infrared Imager, Spectrometer, Coronagraph (MISC)

被引：8

作者：

Matsuo, Taro ^{[1
,2
]}

Greene, Thomas ^{[2
]}

Roellig, Thomas L. ^{[2
]}

McMurray, Robert E. ^{[2
]}

Johnson, Roy R. ^{[2
]}

Kashani, Ali ^{[2
]}

Goda, Shohei ^{[1
]}

Ido, Masayuki ^{[1
]}

Ito, Satoshi ^{[1
]}

Tsuboi, Takahiro ^{[1
]}

Yamamuro, Tomoyasu ^{[3
]}

Ikeda, Yuji ^{[4
]}

Shibai, Hiroshi ^{[1
]}

Sumi, Takahiro ^{[1
]}

Sakon, Itsuki ^{[5
]}

Ennico-Smith, Kimberly ^{[2
]}

机构：

[1] Osaka Univ, Dept Earth & Space Sci, 1-1 Machikaneyama Cho, Toyonaka, Osaka 5600043, Japan

[2] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[3] OptoCraft, Midori Ku, 3-16-8-101 Higashi Hashimoto, Sagamihara, Kanagawa 2520144, Japan

[4] Photocoding, Sakyo Ku, 460-102 Iwakura Nakamachi, Kyoto 6060025, Japan

[5] Univ Tokyo, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1134685, Japan

来源：

SPACE TELESCOPES AND INSTRUMENTATION 2018: OPTICAL, INFRARED, AND MILLIMETER WAVE | 2018年 / 10698卷

关键词：

Infrared; Transit spectroscopy; Highly stable spectrograph; Origins Space Telescope; SEARCH; LIFE;

D O I：

10.1117/12.2311896

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper describes the transit spectrograph designed for the Origins Space Telescope mid-infrared imager, spectrometer, coronagraph (MISC) and its performance derived through analytical formulation and numerical simulation. The transit spectrograph is designed based on a densified pupil spectroscopy design that forms multiple independent spectra on the detector plane and minimizes the systematic noise in the optical system. This design can also block any thermal light incoming into pixels around the transit spectra. The gain fluctuations occurring in the detector and readout electronics are accurately corrected by use of a number of blanked-off pixels. We found that the transit spectrograph for the OST concept 1 with a diameter of 9.3m potentially achieves the photon-noise-limited performance and allows detection of biosignature gases through transmission spectroscopy of transiting planets orbiting late- and middle-M type stars at 10 pc with 60 transit observations.

引用

页数：12

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