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2022-01-01

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/220586

Image Quality of Data Products of the High Resolution Telescope of the Polarimetric and Helioseismic Imager

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https://doi.org/10.1117/12.2628942

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The High Resolution Telescope (HRT) of the Polarimetric and Helioseismic Imager (SO/PHI) on-board the Solar Orbiter mission (SO) provides near diffraction limited observations of the solar surface. The HRT Refocus Mechanism (HRM) allows for acquiring calibration data in flight which are used in post processing on ground to estimate the image quality of SO/PHI-HRT data products and its dependence on the SO-Sun distance. Our aim is to characterise the wavefront aberrations in the optical path of SO/PHI-HRT and consequently the image quality in the focal plane of the telescope. We use calibration data taken during the Near Earth Commissionning Phase (NECP) and the second Remote Sensing Check-out Window (RSCW2) of Solar Orbiter’s Cruise Phase (CP). In particular, we apply a Phase Diversity (PD) analysis to estimate the low-order wavefront aberrations. The restoration with the retrieved Point Spread Function (PSF) from the PD analysis increases the RMS contrast of the solar granulation in the visible continuum from 4 % to 10−11%.

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Sol, Heliosismologia, Astrofísica

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Sun, Helioseismology, Astrophysics

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Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

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KAHIL, F., GANDORFER, A., Hirzberger. J., OROZCO SUÁREZ, D., ALBERT, K., ALBELO JORGE, N., APPOURCHAUX, T., ALVAREZ HERRERO, Alberto, BLANCO RODRÍGUEZ, J., GERMEROTT, Dietmar, GUERRERO, Lucas, GUTIERREZ-MARQUES, P., SINJAN, J., CALCHETTI, D., KOLLECK, M., SOLANKI, S.k., TORO INIESTA, J.c. del, VOLKMER, Reiner, WOCH, J., FIETHE, B., GÓMEZ CAMA, José maría, PÉREZ-GRANDE, I., SANCHIS KILDERS, E., BALAGUER JIMÉNEZ, M., BELLOT RUBIO, L.r., CARMONA FLORES, Manuel, DEUTSCH, W., FERNANDEZ-RICO, G., FERNANDEZ-MEDINA, Ana b., GARCÍA PAREJO, P., GASENT BLESA, José l., GIZON, L., GRAUF, B., HEERLEIN, K., KORPI-LAGG, A., LANGE, T., LÓPEZ JIMÉNEZ, A., MAUE, Thorsten, MELLER, R., MICHALIK, Harald, MORENO VACAS, A., MÜLLER, R., NAKAI, Eiji, SCHMIDT, Wolfgang, SCHOU, J., SCHÜHLE, U., STAUB, J., STRECKER, H., TORRALBO, I., VALORI, G.. Image Quality of Data Products of the High Resolution Telescope of the Polarimetric and Helioseismic Imager. _Proceedings of SPIE_. 2022. Vol. 12180. [consulta: 21 de gener de 2026]. ISSN: 0277-786X. [Disponible a: https://hdl.handle.net/2445/220586]

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