Spectrograph with High dispersion Echelle grating for Terrestrial exoplanetary Atmosphere (SHETA) for the LAPYUTA mission

Shingo Kameda; Masato Kagitani; Go Murakami; Masaki Kuwabara; Akifumi Nakayama; Fuminori Tsuchiya

doi:10.1117/12.3019328

22 August 2024 Spectrograph with High dispersion Echelle grating for Terrestrial exoplanetary Atmosphere (SHETA) for the LAPYUTA mission

Shingo Kameda, Masato Kagitani, Go Murakami, Masaki Kuwabara, Akifumi Nakayama, Fuminori Tsuchiya

Author Affiliations +

Proceedings Volume 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray; 130933O (2024) https://doi.org/10.1117/12.3019328
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

JAXA recently selected LAPYUTA (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly) as a candidate for JAXA's Small Scale Program No. 6 to be launched by Epsilon in ~2032. We will accomplish the following four objectives: #1 Solar System, #2 Exoplanets, #3 Galaxies, #4 the origin of heavy elements. To achieve these scientific objectives, LAPYUTA aims to carry out spectroscopy with a large effective area (>300 cm2) and a high spatial resolution (0.1 arc-sec) and imaging in far ultraviolet spectral range (110-190 nm). A high dispersion spectrograph with a spectral resolution of > 40000 is required, especially for observing exospheres of terrestrial (Earth-like) exoplanets. We are considering the design of the Spectrograph with High dispersion Echelle grating for the Terrestrial (exo-)planetary Atmosphere (SHETA) as an instrument. In this presentation, we introduce the scientific objective and the conceptual design of the SHETA instrument.

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Shingo Kameda, Masato Kagitani, Go Murakami, Masaki Kuwabara, Akifumi Nakayama, and Fuminori Tsuchiya "Spectrograph with High dispersion Echelle grating for Terrestrial exoplanetary Atmosphere (SHETA) for the LAPYUTA mission", Proc. SPIE 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray, 130933O (22 August 2024); https://doi.org/10.1117/12.3019328

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