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

Surangkhana Rukdee

doi:10.1117/12.2595859

1 September 2021 Trade-off study of a high-resolution spectrograph on a CubeSat to study exoplanets

Surangkhana Rukdee

Proceedings Volume 11823, Techniques and Instrumentation for Detection of Exoplanets X; 118230K (2021) https://doi.org/10.1117/12.2595859
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

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.

Conference Presentation

Citation Download Citation

Surangkhana Rukdee "Trade-off study of a high-resolution spectrograph on a CubeSat to study exoplanets", Proc. SPIE 11823, Techniques and Instrumentation for Detection of Exoplanets X, 118230K (1 September 2021); https://doi.org/10.1117/12.2595859

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