Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images
This is an Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/369622 |
| Acceso en línea: | http://hdl.handle.net/10261/369622 https://api.elsevier.com/content/abstract/scopus_id/85183753946 |
| Access Level: | acceso abierto |
| Palabra clave: | Instrumentation: polarimeters Sun: magnetic fields Sun: photosphere Techniques: image processing |
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Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images |
| title |
Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images |
| spellingShingle |
Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images Bailén, Francisco Javier Instrumentation: polarimeters Sun: magnetic fields Sun: photosphere Techniques: image processing |
| title_short |
Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images |
| title_full |
Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images |
| title_fullStr |
Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images |
| title_full_unstemmed |
Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images |
| title_sort |
Determination of the SO/PHI-HRT wavefront degradation using multiple defocused images |
| dc.creator.none.fl_str_mv |
Bailén, Francisco Javier Orozco Suárez, David Rodríguez, J. Blanco Toro, José Carlos del Strecker, H. Moreno Vacas, Alejandro Santamarina, Pablo Hirzberger, J. Albert, K. Jorge, N. Albelo Appourchaux, T. Alvarez-Herrero, A. Gandorfer, A. Germerott, D. Guerrero, L. Gutierrez-Marques, P. Kahil, F. Kolleck, M. Solanki, S. K. Volkmer, R. Woch, J. Fiethe, B. Cama, J. M.Gómez Pérez-Grande, I. Kilders, E. Sanchis Balaguer Jiménez, M. Bellot Rubio, Luis R. Calchetti, D. Alonso Carmona, M. Isabel Deutsch, W. Feller, A. Fernandez-Rico, G. Fernández-Medina, A. Parejo, P. García Blesa, J. L.Gasent Gizon, L. Grauf, B. Heerlein, K. Korpi-Lagg, A. Lange, T. López Jiménez, A. C. Maue, T. Meller, R. Michalik, H. Müller, R. Nakai, E. Schmidt, W. Schou, J. Schühle, U. Staub, J. Torralbo, I. Valori, G. |
| author |
Bailén, Francisco Javier |
| author_facet |
Bailén, Francisco Javier Orozco Suárez, David Rodríguez, J. Blanco Toro, José Carlos del Strecker, H. Moreno Vacas, Alejandro Santamarina, Pablo Hirzberger, J. Albert, K. Jorge, N. Albelo Appourchaux, T. Alvarez-Herrero, A. Gandorfer, A. Germerott, D. Guerrero, L. Gutierrez-Marques, P. Kahil, F. Kolleck, M. Solanki, S. K. Volkmer, R. Woch, J. Fiethe, B. Cama, J. M.Gómez Pérez-Grande, I. Kilders, E. Sanchis Balaguer Jiménez, M. Bellot Rubio, Luis R. Calchetti, D. Alonso Carmona, M. Isabel Deutsch, W. Feller, A. Fernandez-Rico, G. Fernández-Medina, A. Parejo, P. García Blesa, J. L.Gasent Gizon, L. Grauf, B. Heerlein, K. Korpi-Lagg, A. Lange, T. López Jiménez, A. C. Maue, T. Meller, R. Michalik, H. Müller, R. Nakai, E. Schmidt, W. Schou, J. Schühle, U. Staub, J. Torralbo, I. Valori, G. |
| author_role |
author |
| author2 |
Orozco Suárez, David Rodríguez, J. Blanco Toro, José Carlos del Strecker, H. Moreno Vacas, Alejandro Santamarina, Pablo Hirzberger, J. Albert, K. Jorge, N. Albelo Appourchaux, T. Alvarez-Herrero, A. Gandorfer, A. Germerott, D. Guerrero, L. Gutierrez-Marques, P. Kahil, F. Kolleck, M. Solanki, S. K. Volkmer, R. Woch, J. Fiethe, B. Cama, J. M.Gómez Pérez-Grande, I. Kilders, E. Sanchis Balaguer Jiménez, M. Bellot Rubio, Luis R. Calchetti, D. Alonso Carmona, M. Isabel Deutsch, W. Feller, A. Fernandez-Rico, G. Fernández-Medina, A. Parejo, P. García Blesa, J. L.Gasent Gizon, L. Grauf, B. Heerlein, K. Korpi-Lagg, A. Lange, T. López Jiménez, A. C. Maue, T. Meller, R. Michalik, H. Müller, R. Nakai, E. Schmidt, W. Schou, J. Schühle, U. Staub, J. Torralbo, I. Valori, G. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Ministerio de Ciencia e Innovación (España) European Commission Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Instrumentation: polarimeters Sun: magnetic fields Sun: photosphere Techniques: image processing |
| topic |
Instrumentation: polarimeters Sun: magnetic fields Sun: photosphere Techniques: image processing |
| description |
This is an Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
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2024 |
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2024 2024 2024 |
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info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://hdl.handle.net/10261/369622 https://api.elsevier.com/content/abstract/scopus_id/85183753946 |
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http://hdl.handle.net/10261/369622 https://api.elsevier.com/content/abstract/scopus_id/85183753946 |
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Determination of the SO/PHI-HRT wavefront degradation using multiple defocused imagesBailén, Francisco JavierOrozco Suárez, DavidRodríguez, J. BlancoToro, José Carlos delStrecker, H.Moreno Vacas, AlejandroSantamarina, PabloHirzberger, J.Albert, K.Jorge, N. AlbeloAppourchaux, T.Alvarez-Herrero, A.Gandorfer, A.Germerott, D.Guerrero, L.Gutierrez-Marques, P.Kahil, F.Kolleck, M.Solanki, S. K.Volkmer, R.Woch, J.Fiethe, B.Cama, J. M.GómezPérez-Grande, I.Kilders, E. SanchisBalaguer Jiménez, M.Bellot Rubio, Luis R.Calchetti, D.Alonso Carmona, M. IsabelDeutsch, W.Feller, A.Fernandez-Rico, G.Fernández-Medina, A.Parejo, P. GarcíaBlesa, J. L.GasentGizon, L.Grauf, B.Heerlein, K.Korpi-Lagg, A.Lange, T.López Jiménez, A. C.Maue, T.Meller, R.Michalik, H.Müller, R.Nakai, E.Schmidt, W.Schou, J.Schühle, U.Staub, J.Torralbo, I.Valori, G.Instrumentation: polarimetersSun: magnetic fieldsSun: photosphereTechniques: image processingThis is an Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Context. The Polarimetric and Helioseismic Imager on board the Solar Orbiter mission (SO/PHI) offers refocusing capabilities to cope with the strongly varying thermal environment of the optical system along the spacecraft's elliptical orbit. The series of images recorded during in-flight focus calibrations can be employed for phase diversity analyses.Aims. In this work we infer the wavefront degradation caused by the thermo-optical effects in the High Resolution Telescope (HRT) from images taken during the fine and coarse focus scans performed in the commissioning phase of the instrument. The difference between these two series of images are mainly related to the employed defocused step (smaller for the fine scans) and the signal-to-noise ratio (higher for the coarse scans). We use the retrieved wavefronts to reconstruct the original scene observed during the calibration of the instrument.Methods. We applied a generalized phase diversity algorithm that allowed us to use several images taken with different amounts of defocus to sense the wavefront degradation caused by the instrument. The algorithm also uses information from both the inferred wavefront and the series of images to restore the solar scene.Results. We find that most of the retrieved Zernike coefficients tend to converge to the same value when increasing the number of images employed for PD for both the fine and the coarse focusing scans. The restored scenes also show signs of convergence, and the merit function is minimized more as K increases. Apart from a defocus, the inferred wavefronts are consistent for the two datasets (λ/10 − λ/11). For the fine scan images, the quiet-sun contrast improves from 4.5% for the original focused image up to about 10%. For the coarse scan images, the contrast of the restored scene is as high as 11%. © The Authors 2024.Solar Orbiter is a space mission of international collaboration between ESA and NASA, operated by ESA. We are grateful to the ESA SOC and MOC teams for their support. The German contribution to SO/PHI is funded by the BMWi through DLR and by MPG central funds. The Spanish contribution is funded by FEDER/AEI/MCIU (ESP-2016-77548-C5-1-R and RTI2018-096886-C5), Grant PID2021-125325OB-C51 funded by MCIN/AEI/ 10.13039/501100011033 and by “ERDF A way of making Europe”, by the “European Union”, a “Center of Excellence Severo Ochoa” award to IAA-CSIC (CEX2021-001131-S), and a Ramón y Cajal fellowship awarded to DOS. The French contribution is funded by CNES.With funding from the Spanish government through the "Severo Ochoa Centre of Excellence" accreditation (CEX2021-001131-S).Peer reviewedEDP SciencesMinisterio de Ciencia e Innovación (España)European CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/369622https://api.elsevier.com/content/abstract/scopus_id/85183753946reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP-2016-77548-C5-1-Rinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096886-B-C51info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-125325OB-C51info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2021-001131-SAstronomy and Astrophysicshttp://dx.doi.org/10.1051/0004-6361/202346019Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3696222026-05-22T06:33:51Z |
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15.81155 |