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  In-flight optical performance assessment for the Metis solar coronagraph

Deppo, V., Chioetto, P., Andretta, V., Casini, C., Frassetto, F., Slemer, A., et al. (2021). In-flight optical performance assessment for the Metis solar coronagraph. In Proceedings of SPIE. doi:10.1117/12.2599220.

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 Creators:
Deppo, V.D., Author
Chioetto, P., Author
Andretta, V., Author
Casini, C., Author
Frassetto, F., Author
Slemer, A., Author
Zuppella, P., Author
Romoli, M., Author
Fineschi, S., Author
Heinzel, P., Author
Naletto, G., Author
Nicolini, G., Author
Spadaro, D., Author
Stangalini, M., Author
Teriaca, Luca1, Author              
Bemporad, A., Author
Casti, M., Author
Fabi, M., Author
Grimani, C., Author
Heerlein, Klaus1, Author              
Jerse, G., AuthorLandini, F., AuthorLiberatore, A., AuthorMagli, E., AuthorMelich, R., AuthorPancrazzi, M., AuthorPelizzo, M.G., AuthorRomano, P., AuthorSasso, C., AuthorStraus, T., AuthorSusino, R., AuthorUslenghi, M., AuthorVolpicelli, C.A., 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 is a multi-wavelength coronagraph onboard the European Space Agency (ESA) Solar Orbiter mission. The instrument features an innovative instrument design conceived for simultaneously imaging the Sun's corona in the visible and ultraviolet range. The Metis visible channel employs broad-band, polarized imaging of the visible K-corona, while the UV one uses narrow-band imaging at the HI Lya, i.e. 121.6 nm. During the commissioning different acquisitions and activities, performed with both the Metis channels, have been carried out with the aim to check the functioning and the performance of the instrument. In particular, specific observations of stars have been devised to assess the optical alignment of the telescope and to derive the instrument optical parameters such as focal length, PSF and possibly check the optical distortion and the vignetting function. In this paper, the preliminary results obtained for the PSF of both channels and the determination of the scale for the visible channel will be described and discussed. The in-flight obtained data will be compared to those obtained on-ground during the calibration campaign.

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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: 10.1117/12.2599220
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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: 1185210 Start / End Page: - Identifier: -