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

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...

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Detalles Bibliográficos
Autores: 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.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/220586
Acceso en línea:https://hdl.handle.net/2445/220586
Access Level:acceso abierto
Palabra clave:Sol
Heliosismologia
Astrofísica
Sun
Helioseismology
Astrophysics
Descripción
Sumario: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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