In-flight optical performance assessment for the Metis solar coronagraph

Vania Da Deppo; Paolo Chioetto; Vincenzo Andretta; Chiara Casini; Fabio Frassetto; Alessandra Slemer; Paola Zuppella; Marco Romoli; Silvano Fineschi; Petr Heinzel; Giampiero Naletto; Gianalfredo Nicolini; Daniele Spadaro; Marco Stangalini; Luca Teriaca; Alessandro Bemporad; Marta Casti; Michele Fabi; Catia Grimani; Klaus Heerlein; Giovanna Jerse; Federico Landini; Alessandro Liberatore; Enrico Magli; Radek Melich; Maurizio Pancrazzi; Maria-G. Pelizzo; Paolo Romano; Clementina Sasso; Thomas Straus; Roberto Susino; Michela Uslenghi; Cosimo Antonio Volpicelli

doi:10.1117/12.2599220

11 June 2021 In-flight optical performance assessment for the Metis solar coronagraph

Vania Da Deppo, Paolo Chioetto, Vincenzo Andretta, Chiara Casini, Fabio Frassetto, Alessandra Slemer, Paola Zuppella, Marco Romoli, Silvano Fineschi, Petr Heinzel, Giampiero Naletto, Gianalfredo Nicolini, Daniele Spadaro, Marco Stangalini, Luca Teriaca, Alessandro Bemporad, Marta Casti, Michele Fabi, Catia Grimani, Klaus Heerlein, Giovanna Jerse, Federico Landini, Alessandro Liberatore, Enrico Magli, Radek Melich, Maurizio Pancrazzi, Maria-G. Pelizzo, Paolo Romano, Clementina Sasso, Thomas Straus, Roberto Susino, Michela Uslenghi, Cosimo Antonio Volpicelli

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Proceedings Volume 11852, International Conference on Space Optics — ICSO 2020; 1185210 (2021) https://doi.org/10.1117/12.2599220
Event: International Conference on Space Optics — ICSO 2021, 2021, Online Only

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 Ly 􀄮, 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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Vania Da Deppo, Paolo Chioetto, Vincenzo Andretta, Chiara Casini, Fabio Frassetto, Alessandra Slemer, Paola Zuppella, Marco Romoli, Silvano Fineschi, Petr Heinzel, Giampiero Naletto, Gianalfredo Nicolini, Daniele Spadaro, Marco Stangalini, Luca Teriaca, Alessandro Bemporad, Marta Casti, Michele Fabi, Catia Grimani, Klaus Heerlein, Giovanna Jerse, Federico Landini, Alessandro Liberatore, Enrico Magli, Radek Melich, Maurizio Pancrazzi, Maria-G. Pelizzo, Paolo Romano, Clementina Sasso, Thomas Straus, Roberto Susino, Michela Uslenghi, and Cosimo Antonio Volpicelli "In-flight optical performance assessment for the Metis solar coronagraph", Proc. SPIE 11852, International Conference on Space Optics — ICSO 2020, 1185210 (11 June 2021); https://doi.org/10.1117/12.2599220

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