Mr. Michele Fabi Profile

Michele Fabi

at Univ delgli studi de Urbino Carlo Bo

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Author

Publications (10)

Proceedings Article | 12 July 2023 Open Access

Theoretical, on-ground, and in-flight study of the Metis coronagraph vignetting

C. Casini, P. Chioetto, Y. De leo, V. Da deppo, P. Zuppella, F. Frassetto, M. Romoli, F. Landini, M. Pancrazzi, V. Andretta, A. Bemporad, A. Corso, M. Fabi, S. Fineschi, F. Frassati, C. Grimani, G. Jerse, A. Liberatore, E. Magli, G. Naletto, G. Nicolini, M.G. Pelizzo, P. Romano, C. Sasso, U. Schuehle, D. Spadaro, M. Stangalini, T. Straus, R. Susino, L. Teriaca, M. Uslenghi, M. Casti, P. Heinzel, A. Volpicelli

Proceedings Volume 12777, 1277705 (2023) https://doi.org/10.1117/12.2688589

KEYWORDS: Zemax, Mirrors, Sun, Stars, Calibration, Ultraviolet radiation, Coronagraphy, Vignetting, Astronomical imaging, Solar processes

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Proceedings Article | 12 July 2023 Open Access

Out-of-focus point sources image simulation for the Metis solar coronagraph onboard the Solar Orbiter mission

Vania Da Deppo, Chiara Casini, Paolo Chioetto, Fabio Frassetto, Simone Nordera, Paola Zuppella, Alain Corso, Federico Landini, Maurizio Pancrazzi, Roberto Susino, Clementina Sasso, Michela Uslenghi, Marco Romoli, Vincenzo Andretta, Silvano Fineschi, Giampiero Naletto, Gianalfredo Nicolini, Daniele Spadaro, Marco Stangalini, Luca Teriaca, Lucia Abbo, Catia Grimani, Aleksandr Burtovoi, Yara De Leo, Michele Fabi, Federica Frassati, Giovanna Jerse, Giuliana Russano

Proceedings Volume 12777, 1277764 (2023) https://doi.org/10.1117/12.2691114

KEYWORDS: Equipment, Shadows, Telescopes, Mirrors, Sun, Ultraviolet radiation, Particles, Coronagraphy, Vignetting, Astronomical imaging

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Metis is a multi-wavelength coronagraph onboard the European Space Agency (ESA) Solar Orbiter mission. Thanks to the selected Solar Orbiter mission profile, for the first time the poles of the Sun and the circumsolar region will be seen and studied from a privileged point of view near the Sun (minimum distance 0.28 AU). Metis features an innovative instrument design conceived for simultaneously imaging the visible (580-640 nm) and ultraviolet (Lyman α at 121.6 nm) emission of the solar corona. METIS is an externally occulted coronagraph which adopts an “inverted occulted” configuration. The inverted external occulter (IEO) is a circular aperture after which a spherical mirror M0 rejects back the solar disk light, which exits the instrument through the IEO aperture itself. The passing coronal light is then collected by the METIS telescope. Common to both channels, the Gregorian on-axis telescope is centrally occulted and both the primary and the secondary mirrors have annular shape. The optical and radiometric performance of the telescope is strongly dependent on the huge degree of vignetting presented by the optical design. The internal fields are highly vignetted by M0 and further vignetted by the internal elements, such as the internal occulter and the Lyot stop, furthermore the presence of some spiders, needed to mount the internal elements, are vignetting even more, in some parts of the FoV, the light beams. During the instrument commissioning, in the visible light channel some out-of-focus sources have been imaged while moving in the Metis FoV. At a first glance, the out-of-focus images exhibit a very strange pattern. The pattern can be explained by taking into account the peculiar design of the Metis coronagraph instrument; in fact, the not fully illuminated pupil gives rise to “half moon” shape out-of-focus images with the spiders casting their shadow in different positions. In this work, the ray-tracing simulation results for the out-of-focus images are compared with some of the images taken in flight; some considerations relating the shape and dimension of the acquired images with the distance from Metis of the sources are also given.

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Proceedings Article | 12 July 2023 Open Access

In flight stray light estimate for the Solar Orbiter/Metis coronagraph

Federico Landini, Marco Romoli, Gianalfredo Nicolini, Fabio Frassetto, Roberto Susino, Lucia Abbo, Vincenzo Andretta, Aleksandr Burtovoi, Chiara Casini, Paolo Chioetto, Alain Corso, Vania Da Deppo, Yara De Leo, Michele Fabi, Silvano Fineschi, Federica Frassati, Catia Grimani, Petr Heinzel, Giovanna Jerse, Alessandro Liberatore, Giampiero Naletto, Maurizio Pancrazzi, Giuliana Russano, Clementina Sasso, Daniele Spadaro, Marco Stangalini, Daniele Telloni, Luca Teriaca, Michela Uslenghi, Cosimo Volpicelli, Paola Zuppella

Proceedings Volume 12777, 1277704 (2023) https://doi.org/10.1117/12.2688578

KEYWORDS: Equipment, Visible radiation, Sun, Ultraviolet radiation, Coronagraphy, Astronomical imaging, Space operations, Stray light, Information operations, Solar processes

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Proceedings Article | 27 August 2022 Poster + Paper

In-flight Metis radiometric performance verification using the light retro-reflected from its door

C. Casini, V. Da Deppo, P. Zuppella, P. Chioetto, F. Frassetto, M. Romoli, F. Landini, M. Pancrazzi, V. Andretta, Y. De Leo, A. Bemporad, A. Corso, M. Fabi, S. Fineschi, F. Frassati, C. Grimani, G. Jerse, K. Heerlein, A. Liberatore, E. Magli, G. Naletto, G. Nicolini, M. Pelizzo, P. Romano, C. Sasso, U. Schuehle, D. Spadaro, M. Stangalini, T. Straus, R. Susino, L. Teriaca, M. Uslenghi, M. Casti, P. Heinzel, A. Volpicelli

Proceedings Volume 12180, 121803E (2022) https://doi.org/10.1117/12.2631515

KEYWORDS: Optical components, Visible radiation, Sun, Calibration, Ultraviolet radiation, Coronagraphy, Space operations

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Proceedings Article | 11 June 2021 Open Access

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

A. Liberatore, S. Fineschi, M. Casti, G. Capobianco, M. Romoli, V. Andretta, A. Bemporad, V. Da Deppo, Y. De Leo, M. Fabi, F. Frassetto, C. Grimani, K. Heerlein, P. Heinzel, G. Jerse, F. Landini, E. Magli, G. Naletto, G. Nicolini, M. Pancrazzi, M. Pelizzo, P. Romano, C. Sasso, A. Slemer, D. Spadaro, T. Straus, R. Susino, L. Teriaca, M. Uslenghi, C. Volpicelli, P. Zuppella

Proceedings Volume 11852, 1185248 (2021) https://doi.org/10.1117/12.2599646

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Proceedings Article | 11 June 2021 Open Access

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

Proceedings Volume 11852, 1185210 (2021) https://doi.org/10.1117/12.2599220

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Proceedings Article | 11 June 2021 Open Access

First-light Science Observations of the Metis Solar Coronagraph

S. Fineschi, M. Romoli, V. Andretta, A. Bemporad, G. Capobianco, M. Casti, V. Da Deppo, Y. De Leo, M. Fabi, F. Frassetto, C. Grimani, K. Heerlein, P. Heinzel, G. Jerse, F. Landini, A. Liberatore, E. Magli, G. Naletto, G. Nicolini, M. Pancrazzi, M. G. Pelizzo, P. Romano, C. Sasso, A. Slemer, D. Spadaro, M. Stangalini, T. Straus, R. Susino, L. Teriaca, M. Uslenghi, C.A. Volpicelli, P. Zuppella

Proceedings Volume 11852, 1185211 (2021) https://doi.org/10.1117/12.2599221

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Proceedings Article | 11 June 2021 Open Access

Challenges during Metis-Solar Orbiter commissioning phase

Marco Romoli, Vincenzo Andretta, Alessandro Bemporad, Marta Casti, Vania Da Deppo, Yara De Leo, Michele Fabi, Silvano Fineschi, Fabio Frassetto, Catia Grimani, Klaus Heerlein, Petr Heinzel, Giovanna Jerse, Federico Landini, Alessandro Liberatore, Enrico Magli, Giampiero Naletto, Gianalfredo Nicolini, Maurizio Pancrazzi, Maria Guglielmina Pelizzo, Paolo Romano, Clementina Sasso, Udo Schühle, Alessandra Slemer, Daniele Spadaro, Thomas Straus, Roberto Susino, Luca Teriaca, Michela Uslenghi, Cosimo Antonio Volpicelli, Paola Zupella

Proceedings Volume 11852, 118525A (2021) https://doi.org/10.1117/12.2599944

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Proceedings Article | 11 June 2021 Open Access

On-ground flat-field calibration of the Metis coronagraph onboard the Solar Orbiter ESA mission

C. Casini, V. Da Deppo, P. Zuppella, P. Chioetto, A. Slemer, F. Frassetto, M. Romoli, F. Landini, M. Pancrazzi, V. Andretta, Y. De Leo, A. Bemporad, M. Fabi, S. Fineschi, F. Frassati, C. Grimani, G. Jerse, K. Heerlein, A. Liberatore, E. Magli, G. Naletto, G. Nicolini, M. Pelizzo, P. Romano, C. Sasso, D. Spadaro, M. Stangalini, T. Straus, R. Susino, L. Teriaca, M. Uslenghi, M. Casti, P. Heinzel, A. Volpicelli

Proceedings Volume 11852, 118525B (2021) https://doi.org/10.1117/12.2599945

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Proceedings Article | 13 December 2020 Presentation + Paper

The MDOR/PDOR on-line module for MISO, the planning software of Solar Orbiter instruments

Cosimo Volpicelli, Federico Landini, Maurizio Pancrazzi, Thomas Straus, Roberto Susino, Gianalfredo Nicolini, Clementina Sasso, Michele Fabi, Yara De Leo, Chiara Casini, Giampiero Naletto, Piergiorgio Nicolosi, Daniele Spadaro, Vincenzo Andretta, Ester Antonucci, Silvano Fineschi, Vania Da Deppo, Paola Zuppella, Fabio Frassetto, Alessandra Slemer, Claude Mercier, Dimitri Kouliche, Stephane Caminade, David Picard, Eric Buchlin, Frédéric Auchère, Marco Romoli

Proceedings Volume 11452, 114520S (2020) https://doi.org/10.1117/12.2562514

KEYWORDS: Visible radiation, Logic, Sun, Imaging systems, Databases, Ultraviolet radiation, Remote sensing, Coronagraphy

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