The Venus infrared atmospheric gases linker instrument concept for solar occultation studies of Venus atmosphere composition and structure onboard the Venus Orbiter Mission of the Indian Space Research Organization

Andrey Patrakeev; Alexander Trokhimovskiy; Oleg Korablev; Franck Montmessin; Denis Belyaev; Anna Fedorova; Sandrine Maloreau; Gabriel Guignan; Yuriy Ivanov; Yuriy Kalinnikov

doi:10.1117/12.2632371

30 March 2022 The Venus infrared atmospheric gases linker instrument concept for solar occultation studies of Venus atmosphere composition and structure onboard the Venus Orbiter Mission of the Indian Space Research Organization

Andrey Patrakeev, Alexander Trokhimovskiy, Oleg Korablev, Franck Montmessin, Denis Belyaev, Anna Fedorova, Sandrine Maloreau, Gabriel Guignan, Yuriy Ivanov, Yuriy Kalinnikov

Author Affiliations +

Proceedings Volume 12138, Optics, Photonics and Digital Technologies for Imaging Applications VII; 1213810 (2022) https://doi.org/10.1117/12.2632371
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Conference Poster

Abstract

In this paper, we describe the concept of the Venus InfraRed Atmospheric Linker (VIRAL) spectrometer for investigation of the composition and structure of the planetary atmosphere at the top and above the cloud layer of Venus onboard the Venus Orbiter Mission announced by the Indian Space Research Organization (ISRO). VIRAL includes two channels, an infrared echelle spectrometer channel and an ultra-high resolution heterodyne interferometer channel. Here, we present the concept of the echelle channel only. The instrument is designed to perform solar occultation, providing an optimal photon yield combined with a superior spectral resolving power that exceeds 20,000. VIRAL echelle spectrometer will cover the wavelength range from 2.3 to 4.3 μm, and achieve high vertical resolution (with a footprint of about 1 km at the limb) to allow the detailed altitude profiling of the Venusian upper atmosphere with its composition and structure. We present the instrument concept, its preliminary optical design and science objectives of the experiment.

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Andrey Patrakeev, Alexander Trokhimovskiy, Oleg Korablev, Franck Montmessin, Denis Belyaev, Anna Fedorova, Sandrine Maloreau, Gabriel Guignan, Yuriy Ivanov, and Yuriy Kalinnikov "The Venus infrared atmospheric gases linker instrument concept for solar occultation studies of Venus atmosphere composition and structure onboard the Venus Orbiter Mission of the Indian Space Research Organization", Proc. SPIE 12138, Optics, Photonics and Digital Technologies for Imaging Applications VII, 1213810 (30 March 2022); https://doi.org/10.1117/12.2632371

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