Dr. Luca Zangrilli Profile

Dr. Luca Zangrilli

at INAF - Osservatorio Astronomico di Torino

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 23 August 2024 Poster + Paper

Poster + Paper

Polarimetric characterization of the coronal diagnostic experiment (CODEX)

Marta Casti, Jeffrey Newmark, Yeon-Han Kim, Gerardo Capobianco, Hervé Haudemand, Donguk Song, Sung-Hong Park, Su-Chan Bong, Kyungsuk Cho, Seonghwan Choi, Qian Gong, Ji-Hye Baek, Jongyeob Park, Jihun Kim, Heesu Yang, Nelson Reginald, Nicholeen Viall, Silvano Fineschi, Federico Landini, Davide Loreggia, Luca Zangrilli, Lucia Abbo, Jason Budinoff

Proceedings Volume 13092, 130927O (2024) https://doi.org/10.1117/12.3020730

KEYWORDS: Polarization, Coronagraphy, Equipment, Polarimetry, Sensors, Demodulation, Polarized light, Modulation, Linear polarizers, Polarization imaging

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Proceedings Article | 23 August 2024 Presentation + Paper

Presentation + Paper

CODEX optical design and alignment

Qian Gong, Jeffrey Newmark, Yeon-Han Kim, Marta Casti, Lucia Abbo, Ji-Hye Baek, Su-Chan Bong, Jason Budinoff, Gerado Capobianco, Kyungsuk Cho, Seonghwan Choi, Silvano Fineschi, Hervé Haudemand, Jihun Kim, Federico Landini, Davide Loreggia, Sung-Hong Park, Jongyeob Park, Nelson Reginald, Donguk Song, Heesu Yang, Luca Zangrilli

Proceedings Volume 13092, 130922I (2024) https://doi.org/10.1117/12.3020705

KEYWORDS: Diffraction, Coronagraphy, Optical alignment, Telescopes, Stray light, Cameras, Vignetting, Optical design

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The COronal Diagnostic EXperiment (CODEX) is a Heliophysics mission to measure the density, temperature, and velocity of the electrons in the solar corona with the primary goal of improving our understanding of the physical conditions of the solar wind in the acceleration region. The temperature and velocity measurement requires much higher signal-to-noise ratio than the density measurements. In solar coronagraphs, the diffraction of the solar disk light due to the occulting element is the dominant source of noise. Therefore, to further suppress the diffracted sun light with respect to the existing coronagraphs is a critical element of the CODEX design. To minimize the stray light due to diffraction, the selected optical design is a two-stage standard coronagraph with an external occulter, an internal occulter, and a Lyot stop. What is unique for this design is that a focal mask was inserted at the telescope focal plane. It works together with the field lens suppressing the stray light down by ~ another order of magnitude as compared to a traditional three-stage approach. During the optical design, a Fourier Transform based beam propagation software, i.e., GLAD, was used to model the beam path through the full coronagraph, from the external occulter to the detector array. All diffraction sensitive elements: external occulter, internal occulter, focal mask, and Lyot stop were carefully modeled and optimized. As a result, the requirement of achieving a stray light level which is one order of magnitude lower than F-corona was satisfied. On the other hand, to achieve the final suppression, a precision optical alignment is another must. This paper also presents our creative alignment procedure: using the combination of metrology, precision alignment equipment, and real time diffraction ring monitoring to minimize the diffraction. The final test results show that the suppression ratio (B/B0) reaches 10-11 level, which is equivalent to one order of magnitude lower than F-corona.

Proceedings Article | 12 July 2023 Open Access

Open Access

Paper

SailCor: compact coronagraph for the Helianthus sub-L1 Mission with solar photonic propulsion

Federico Landini, Fabio Frassetto, Luca Zangrilli, Valeria Caracci, Alberto Riva, Davide Loreggia, Edoardo Redaelli, Marco Riva, Rocco Pellegrini, Enrico Cavallini, Marco Pizzarelli, Christian Circi, Silvano Fineschi

Proceedings Volume 12777, 1277703 (2023) https://doi.org/10.1117/12.2688482

KEYWORDS: Coronagraphy, Stray light, Information operations, Solar processes, Cameras, Objectives, Astronomical imaging, Space weather, Prototyping, Polishing

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Helianthus is a technological development project funded by the Italian Space Agency for a Phase A study of a space weather station with solar photonic propulsion. Helianthus will have a synchronous orbit with the Earth-Moon barycenter, positioned at about 7 millions km from Earth towards the Sun, thus much closer to the Sun with respect to historical Space Weather instrumentation, which are typically orbiting the Earth or L1. This sub-L1 halo orbit is maintained by radiation pressure on a solar sail as the propulsion mechanism: once in flight, the spacecraft will have a huge square sail, about 40 m long. The scientific payload will be hosted at the center of the sail and will comprise remote-sensing and in situ instruments. Remote sensing: an X-ray detector to detect Solar Flares and SailCor, a coronagraph with a wide field of view. In situ: a plasma analyzer and a magnetometer. For this ”Sailcraft”, a scientific payload with reduced mass and envelope is under study. The maximum allowed mass for the entire scientific payload shall not exceed 5 kg. Both the X-Ray detector and the in situ instruments have a flight heritage. This study aims at developing a laboratory prototype of a coronagraph matching the constraints of mass and envelope of the Helianthus payload. SailCor is a 20 cm long coronagraph with a field of view ranging heliocentric heights 3-30 solar radii. The external occulter is mounted on an extendable boom that will be deployed once in flight. SailCor presents an innovative solution that combines the diffraction apodization by the external occulter and the internal occulter positioning so that no Lyot stop is required. The classical design of externally occulted coronagraphs foresees the positioning of an internal occulter as a conjugated element to the external occulter with respect to the primary objective. The function of the internal occulter is to block the image of of the diffraction from the external occulter edge. Then, a secondary objective generates the coronal image on the detection system. The SailCor solution takes advantage of the focusing effect that the entrance aperture of the instrument induces on the light diffracted by the external occulter. This effect is used to calculate the position of the internal occulter with respect to the primary focal plane. With this approach, there is no need for a Lyot stop and the detection system can be placed at the first focal plane, with a significant reduction of envelope and mass. This contribution describes the design of the prototype of SailCor, used in laboratory to experimentally define the geometry of the occultation system. The activity has been carried out in the INAF OPSys facility clean environment (ISO5/6) hosted at ALTEC S.p.A. (Torino). The source is a solar divergence simulator.

Proceedings Article | 12 July 2023 Open Access

Open Access

Paper

ASPIICS shadow position sensors digital twin and illumination testbed

Davide Loreggia, Gerardo Capobianco, Silvano Fineschi, Francesco Amadori, Salvatore Caschera, Massimiliano Belluso, Luca Zangrilli, Maurizio Pancrazzi, Valeria Caracci, Giuseppe Massone

Proceedings Volume 12777, 1277729 (2023) https://doi.org/10.1117/12.2689974

KEYWORDS: Surface plasmons, Light emitting diodes, Calibration, Light sources and illumination, Shadows, Metrology, Telescopes, Coronagraphy, Space operations, Silicon photomultipliers

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Proceedings Article | 31 August 2022 Poster + Paper

Poster + Paper

The space weather x-ray spectrometer for the Helianthus sub-L1 mission with solar photonic propulsion

Vladimiro Noce, Salvatore Varisco, Federico Landini, Hervé Haudemand, Roberto Candia, Marco Barbera, Ugo Lo Cicero, Fabio Frassetto, Luca Zangrilli, Valeria Caracci, Davide Loreggia, Alfonso Collura, Silvano Fineschi, Rocco Pellegrini, Enrico Cavallini, Marco Pizzarelli, Christian Circi

Proceedings Volume 12181, 121815V (2022) https://doi.org/10.1117/12.2645141

KEYWORDS: Sensors, X-rays, Spectroscopy, Solar processes, X-ray detectors, X-ray sources, Space operations, Sun

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Proceedings Article | 29 August 2022 Presentation

Presentation

CorMag - coronal magnetograph for the stratospheric Hemera mission

Silvano Fineschi, Gerardo Capobianco, Luca Zangrilli, Donata Bonino, Federico Landini, Davide Loreggia, Maurizio Pancrazzi, Roberto Susino, Alessandro Bemporad, Valeria Caracci, Francesco Amadori, Salvatore Caschera

Proceedings Volume 12184, 121840W (2022) https://doi.org/10.1117/12.2630866

KEYWORDS: Coronagraphy, Magnetism, Polarization, Temporal resolution, Telescopes, Sun, Spatial resolution, Solar processes, Polarization analysis, Physics

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Proceedings Article | 11 June 2021 Open Access

Open Access

Poster + Presentation + Paper

Laboratory testbed for the calibration and the validation of the shadow position sensor subsystem of the PROBA3 ESA mission

Davide Loreggia, Luca Zangrilli, Gerardo Capobianco, Giuseppe Massone, Massimiliano Belluso, Silvano Fineschi, Francesco Amadori, Vladimiro Noce, Alessandro Bemporad, Marta Casti, Gianalfredo Nicolini, Federico Landini, Maurizio Pancrazzi, Marco Romoli

Proceedings Volume 11852, 118526Q (2021) https://doi.org/10.1117/12.2600312

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Proceedings Article | 11 June 2021 Open Access

Open Access

Presentation + Paper

PolarCam micropolarizer cameras characterization and usage

A. Liberatore, S. Fineschi, G. Capobianco, G. Massone, L. Zangrilli, G. Nicolini, R. Susino

Proceedings Volume 11852, 118520W (2021) https://doi.org/10.1117/12.2599180

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Proceedings Article | 9 September 2019 Open Access

Open Access

Paper

METIS, the Multi Element Telescope for Imaging and Spectroscopy: for the solar orbiter mission

G. Naletto, E. Antonucci, V. Andretta, E. Battistelli, S. Cesare, V. Da Deppo, F. D'Angelo, S. Fineschi, M. Focardi, P. Lamy, F. Landini, D. Moses, G. Nicolini, P. Nicolosi, M. Pancrazzi, M-G. Pelizzo, L. Poletto, M. Romoli, S. Solanki, D. Spadaro, L. Teriaca, M. Uslenghi, L. Zangrilli

Proceedings Volume 10565, 105656H (2019) https://doi.org/10.1117/12.2553106

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Proceedings Article | 28 May 2018 Paper

Paper

Formation flying metrology system for the ESA-PROBA3 mission: the Shadow Positioning Sensors (SPS)

D. Loreggia, S. Fineschi, A. Bemporad, M. Casti, V. Noce, G. Capobianco, G. Nicolini, L. Zangrilli, F. Landini, C. Baccani, M. Romoli, S. Buckley, C. Thizy, F. Denis, P. Ledent, B. Marquet, D. Galano, M. Belluso, L. Accatino, L. Terenzi, G. Morgante, M. Riva, M. Moschetti, C. Calderoni, S. Pieraccini

Proceedings Volume 10695, 1069503 (2018) https://doi.org/10.1117/12.2314814

KEYWORDS: Coronagraphy, Sensors, Metrology, Diodes, Sun, Space operations, Space telescopes, Telescopes

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Proceedings Article | 13 April 2018 Paper

Paper

SPECTRE: a spectro-heliograph for the transition region

G. Naletto, E. Antonucci, S. Fineschi, V. Da Deppo, P. Nicolosi, M. Romoli, Luca Zangrilli, D. Gardiol, D. Loreggia, M. Malvezzi, R Howard, D. Moses

Proceedings Volume 10568, 1056824 (2018) https://doi.org/10.1117/12.2500099

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Proceedings Article | 21 November 2017 Open Access

Open Access

Paper

METIS, the Multi Element Telescope for Imaging and Spectroscopy: an instrument proposed for the solar orbiter mission

E. Antonucci, V. Andretta, S. Cesare, A. Ciaravella, G. Doschek, S. Fineschi, S. Giordano, P. Lamy, D. Moses, G. Naletto, J. Newmark, L. Poletto, M. Romoli, S. Solanki, D. Spadaro, L. Teriaca, L. Zangrilli

Proceedings Volume 10566, 105660L (2017) https://doi.org/10.1117/12.2308225

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Proceedings Article | 28 July 2014 Paper

Paper

Preliminary results on the characterization and performances of ZBLAN fiber for infrared spectrographs

Marcella Iuzzolino, A. Tozzi, N. Sanna, L. Zangrilli, E. Oliva

Proceedings Volume 9147, 914766 (2014) https://doi.org/10.1117/12.2055093

KEYWORDS: Telescopes, Spectrographs, ZBLAN, Interference (communication), Mirrors, Infrared telescopes, Infrared radiation, Lenses, Vignetting, Infrared spectroscopy

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Proceedings Article | 13 September 2012 Paper

Paper

Electro-optical polarimeters for ground-based and space-based observations of the solar K-corona

G. Capobianco, S. Fineschi, G. Massone, E. Balboni, A. Malvezzi, G. Crescenzio, L. Zangrilli, P. Calcidese, E. Antonucci, M. Patrini

Proceedings Volume 8450, 845040 (2012) https://doi.org/10.1117/12.926896

KEYWORDS: Polarimetry, Polarization, Coronagraphy, Imaging spectroscopy, Wave plates, Liquid crystals, Solar processes, Modulation, Electro optics, Visible radiation

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Proceedings Article | 13 October 2011 Paper

Paper

Liquid crystals Lyot filter for solar coronagraphy

S. Fineschi, G. Capobianco, G. Massone, T. Baur, A. Bemporad, L. Abbo, L. Zangrilli, V. Dadeppo

Proceedings Volume 8148, 814808 (2011) https://doi.org/10.1117/12.897793

KEYWORDS: Fabry–Perot interferometers, Coronagraphy, Liquid crystals, Polarimetry, Optical filters, Optical filtering, Spectroscopy, Tunable filters, Solar processes, Iron

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Proceedings Article | 13 October 2011 Paper

Paper

OPSys: optical payload systems facility for testing space coronagraphs

S. Fineschi, G. Crescenzio, G. Massone, G. Capobianco, L. Zangrilli, E. Antonucci, F. Anselmi

Proceedings Volume 8148, 81480W (2011) https://doi.org/10.1117/12.897794

KEYWORDS: Coronagraphy, Mirrors, Sun, Optical benches, Astronomical imaging, Collimators, Calibration, Optical calibration, Stray light, Collimation

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Proceedings Article | 23 September 2009 Paper

Paper

Calibration of the EKPol K-corona imaging polarimeter

Luca Zangrilli, Silvano Fineschi, Gerardo Capobianco

Proceedings Volume 7438, 74380W (2009) https://doi.org/10.1117/12.827247

KEYWORDS: Polarimetry, Calibration, Wave plates, Solar processes, Coronagraphy, Modulation, Liquid crystals, Polarization, Signal detection, Data acquisition

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Proceedings Article | 18 August 2005 Paper

Paper

KPol: liquid crystal polarimeter for K-corona observations from the SCORE coronagraph

Silvano Fineschi, Luca Zangrilli, Guglielmo Rossi, Luca Gori, Marco Romoli, Gianni Corti, Gerardo Capobianco, Ester Antonucci, Emanuele Pace

Proceedings Volume 5901, 59011I (2005) https://doi.org/10.1117/12.626033

KEYWORDS: Coronagraphy, Polarimetry, Mirrors, Liquid crystals, Wave plates, Error analysis, Polarization, Visible radiation, Telescopes, Sensors

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Proceedings Article | 4 February 2004 Paper

Paper

CCD camera for ground- and space-based solar corona observations

Alessandro Gherardi, Luca Gori, Mauro Focardi, Emanuele Pace, Marco Romoli, Silvano Fineschi, Luca Zangrilli, Daniele Gardiol, Ester Antonucci

Proceedings Volume 5171, (2004) https://doi.org/10.1117/12.513438

KEYWORDS: CCD cameras, Cameras, CCD image sensors, Sensors, Coronagraphy, Charge-coupled devices, Clocks, Polarimetry, Head, Rockets

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Showing 5 of 19 publications

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