Trade-off study of a high-resolution spectrograph on a CubeSat to study 
exoplanets

Rukdee, Surangkhana

doi:10.1117/12.2595859

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Trade-off study of a high-resolution spectrograph on a CubeSat to study exoplanets

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Rukdee, Surangkhana
Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

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引用

Rukdee, S. (2021). Trade-off study of a high-resolution spectrograph on a CubeSat to study exoplanets. In Techniques and Instrumentation for Detection of Exoplanets X. doi:10.1117/12.2595859.

引用: https://hdl.handle.net/21.11116/0000-000A-94DF-4

要旨

The majority of the 4,000 known exoplanets have been detected via transit photometry. Unambiguous characterization of their atmospheres for biosignatures such as H₂O, CH₄, O₃ and O₂ can be unlocked with high-resolution spectroscopy from space. To this end, we investigate the feasibility of a high-resolution (R=50,000) spectrograph on a CubeSat. This work compares optical design elements of traditional Echelle grating and a virtually imaged phased array (VIPA) using exposure time calculations. The limited magnitude when varying the spectral resolution and instrument size is reported. VIPAs on a 6U CubeSat is a cost-effective solution for high-resolution spectroscopy from space.