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  In-flight calibration of Metis coronagraph on board of Solar Orbiter

Liberatore, A., Fineschi, S., Casti, M., Capobianco, G., Romoli, M., Andretta, V., et al. (2021). In-flight calibration of Metis coronagraph on board of Solar Orbiter. In Proceedings of SPIE. doi:10.1117/12.2599646.

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 Creators:
Liberatore, A., Author
Fineschi, S., Author
Casti, M., Author
Capobianco, G., Author
Romoli, M., Author
Andretta, V., Author
Bemporad, A., Author
da Deppo, V., Author
De Leo, Yara1, Author              
Fabi, M., Author
Frassetto, F., Author
Grimani, C., Author
Heerlein, Klaus1, Author              
Heinzel, P., Author
Jerse, G., Author
Landini, F., Author
Magli, E., Author
Naletto, G., Author
Nicolini, G., Author
Pancrazzi, M., Author
Pelizzo, M.G., AuthorRomano, P., AuthorSasso, C., AuthorSlemer, A., AuthorSpadaro, D., AuthorStraus, T., AuthorSusino, R., AuthorTeriaca, Luca1, Author              Uslenghi, M., AuthorVolpicelli, C.A., AuthorZuppella, P., Author more..
Affiliations:
1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              

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 Abstract: Metis coronagraph is one of the remote-sensing instruments of the Solar Orbiter mission launched at the begin of 2020. The mission profile will allow for the first time the remote-sensing observation of the Sun from a very close distance and increasing the latitude with respect to the ecliptic plane. In particular, Metis is aimed at the overall characterization and study of the solar corona and solar wind. Metis instrument acquires images of the solar corona in two different wavelengths simultaneously; ultraviolet (UV) and visible-light (VL). The VL channel includes a polarimeter with an electro-optically modulating Liquid Crystal Variable Retarder (LCVR) to measure the linearly polarized brighness pB) of the K-corona. This paper presents part of the in-flight calibration results for both wavelength channels together with a comparison with on-ground calibrations. The orientation of the K-corona linear polarization was used for the in-flight calibration of the Metis polarimeter. This paper describes the correction of the on-ground VL vignetting function after the in-flight adjustment of the internal occulter. The same vignetting function was adaptated to the UV channel.

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Language(s): eng - English
 Dates: 2021
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1117/12.2599646
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Title: International Conference on Space Optics — ICSO 2021
Place of Event: online
Start-/End Date: 2021-03-30 - 2021-04-02

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Title: Proceedings of SPIE
Source Genre: Proceedings
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Pages: - Volume / Issue: 11852 Sequence Number: 1185248 Start / End Page: - Identifier: -