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2. Liquid crystal devices for compact optical space instruments

Author

Álvarez-Herrero, Alberto, primary, García Parejo, Pilar, additional, Campos-Jara, Antonio, additional, Ayuso Angulo, Leire, additional, Garranzo-García, Daniel, additional, Silva-López, Manuel, additional, Jimenez-Girela, Angel, additional, Merino-Pérez, Daniel, additional, and Fernández Borrell, Jesús, additional

Published
2024
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3. Liquid crystal polarization rotators for the Miniaturized Absolute Magnetometer (MAM) of the NanoMagSat space mission

Author

García Parejo, Pilar, primary, Jimenez-Girela, Angel, additional, Merino-Pérez, Daniel, additional, Campos-Jara, Antonio, additional, Silva-Lopez, Manuel, additional, Jager, Thomas, additional, Fourcault, William, additional, Bertrand, Francois, additional, Leger, Jean Michael, additional, and Álvarez-Herrero, Alberto, additional

Published
2024
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4. Liquid crystal devices for compact optical space instruments

Author

Chenault, David B., Kupinski, Meredith K., Ratliff, Bradley M., Alvarez-Herrero, Alberto, García Parejo, Pilar, Campos-Jara, Antonio, Ayuso Angulo, Leire, Garranzo-García, Daniel, Silva-Lopez, Manuel, Jimenez-Girela, Angel, Merino-Pérez, Daniel, and Fernández Borrell, Jesús

Published
2024
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6. End-to-end tests of the TuMag instrument for the SUNRISE III mission

Author

Álvarez Herrero, Alberto, primary, Garranzo, Daniel, additional, Núñez, Armonía, additional, Silva-López, Manuel, additional, Campos-Jara, Antonio, additional, García Parejo, Pilar, additional, Cebollero, María, additional, Atiénzar, Julia, additional, Bailén, Francisco J., additional, Blanco Rodríguez, Julian, additional, Santamarina, Pablo, additional, Orozco Suárez, David, additional, and del Toro Iniesta, Jose Carlos, additional

Published
2022
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7. The on-ground data reduction and calibration pipeline for SO/PHI-HRT

Author

Sinjan, Jonas, primary, Calchetti, Daniele, additional, Hirzberger, Johann, additional, Orozco Suárez, David, additional, Albert, Kinga, additional, Albelo Jorge, Nestor, additional, Appourchaux, Thierry, additional, Alvarez-Herrero, Alberto, additional, Blanco Rodríguez, Julian, additional, Gandorfer, Achim M., additional, Germerott, Dietmar, additional, Guerrero, Lucas, additional, Gutierrez Marquez, Pablo, additional, Kahil, Fatima, additional, Kolleck, Martin, additional, Solanki, Sami K., additional, del Toro Iniesta, Jose Carlos, additional, Volkmer, Reiner, additional, Woch, Joachim, additional, Fiethe, Björn, additional, Gómez Cama, José María, additional, Pérez-Grande, Isabel, additional, Sanchis Kilders, Esteban, additional, Balaguer Jiménez, María, additional, Bellot Rubio, Luis R., additional, Carmona, Manuel, additional, Deutsch, Werner, additional, Fernandez-Rico, German, additional, Fernández-Medina, Ana B., additional, García Parejo, Pilar, additional, Gasent Blesa, Jose Luis, additional, Gizon, Laurent, additional, Grauf, Bianca, additional, Heerlein, Klaus, additional, Korpi-Lagg, Andreas, additional, Lange, Tobias, additional, López Jiménez, Antonio C., additional, Maue, Thorsten, additional, Meller, Reinhard, additional, Michalik, Harald, additional, Moreno Vacas, Alejandro M., additional, Müller, Reinhard, additional, Nakai, Eiji, additional, Schmidt, Wolfgang, additional, Schou, Jesper, additional, Schühle, Udo H., additional, Staub, Jan, additional, Strecker, Hanna, additional, Torralbo, Ignacio, additional, and Valori, Gherardo, additional

Published
2022
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8. TuMag for SUNRISE III mission: development of the optical unit of an imaging spectropolarimeter

Author

Álvarez Herrero, Alberto, primary, Fernández-Medina, Ana, additional, Cebollero, María, additional, Garranzo, Daniel, additional, Núñez, Armonía, additional, Gonzalo, Alejandro, additional, Sánchez, Antonio, additional, Villanueva, Javier, additional, García Parejo, Pilar, additional, Campos-Jara, Antonio, additional, Silva-López, Manuel, additional, San Julián, Ricardo, additional, and Laguna, Hugo, additional

Published
2022
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9. Image quality of data products of the high resolution telescope of the polarimetric and helioseismic imager

Author

Kahil, Fatima, primary, Gandorfer, Achim, additional, Hirzberger, Johann, additional, Orozco Suárez, David, additional, Albert, Kinga, additional, Albelo Jorge, Nestor, additional, Appourchaux, Thierry, additional, Álvarez-Herrero, Alberto, additional, Blanco Rodríguez, Julian, additional, Germerott, Dietmar, additional, Guerrero, Lucas, additional, Gutierrez-Marquez, Pablo, additional, Sinjan, Jonas, additional, Calchetti, Daniele, additional, Kolleck, Martin, additional, Solanki, Sami K., additional, del Toro Iniesta, Jose Carlos, additional, Volkmer, Reiner, additional, Woch, Joachim, additional, Fiethe, Björn, additional, Gómez Cama, Jose, additional, Pérez-Grande, Isabel, additional, Sanchis Kilders, Esteban, additional, Balaguer Jiménez, María, additional, Bellot Rubio, Luis, additional, Carmona, Manuel, additional, Deutsch, Werner, additional, Fernandez-Rico, German, additional, Fernández-Medina, Ana, additional, García Parejo, Pilar, additional, Gasent Blesa, Jose, additional, Gizon, Laurent, additional, Grauf, Bianca, additional, Heerlein, Klaus, additional, Lagg, Andreas, additional, Lange, Tobias, additional, López Jiménez, Antonio, additional, Maue, Thorsten, additional, Müller, Reinhard, additional, Michalik, Harald, additional, Moreno Vacas, Alejandro Miguel, additional, Nakai, Eiji, additional, Schmidt, Wolfgang, additional, Schou, Jesper, additional, Schühle, Udo, additional, Staub, Jan, additional, Strecker, Hanna, additional, Tarralbo, Ignacio, additional, and Valori, Gherardo, additional

Published
2022
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10. The on-ground data reduction and calibration pipeline for SO/PHI-HRT

Author

Sinjan, Jonas, Calchetti, Daniele, Hirzberger, Johann, Orozco Suárez, David, Albert, Kinga, Albelo Jorge, Nestor, Appourchaux, Thierry, Álvarez Herrero, Alberto, Blanco Rodríguez, Julián, Gandofer, Achim, Germerott, Dietmar, Guerrero, Lucas, Gutiérrez Marques, Pablo, Kahil, Fátima, Kolleck, Martin, Solanki, Sami K., Toro Iniesta, José Carlos, del, Volkmer, Reiner, Woch, Joaquim, Fiethe, Bjorn, Gómez Cama, José María, Pérez Grande, Isabel, Sanchis Kilders, Esteban, Balaguer Jiménez, María, Bellot Rubio, Luis Ramón, Carmona Flores, Manuel, Deutsch, Werner, Fernández Rico, Germán, Fernández Medina, Ana, García Parejo, Pilar, Gasent Blesa, José Luis, Gizón, Laurent, Grauf, Bianca, Herlein, Klaus, Lagg, Andreas, Lange, Tobias, López JIménez, Antonio Carlos, Maue, Thorsten, Meller, Reinhard, Michalik, Harald, Moreno Vacas, Alejandro Miguel, Müller, Reinhard, Nakai, Eiji, Schmidt, Wolfgang, Schou, Jesper, Schühle, Udo, Staub, Jan, Strecker, Hanna María, Torralbo, Ignacio, Valori, Gherardo, Sinjan, Jonas, Calchetti, Daniele, Hirzberger, Johann, Orozco Suárez, David, Albert, Kinga, Albelo Jorge, Nestor, Appourchaux, Thierry, Álvarez Herrero, Alberto, Blanco Rodríguez, Julián, Gandofer, Achim, Germerott, Dietmar, Guerrero, Lucas, Gutiérrez Marques, Pablo, Kahil, Fátima, Kolleck, Martin, Solanki, Sami K., Toro Iniesta, José Carlos, del, Volkmer, Reiner, Woch, Joaquim, Fiethe, Bjorn, Gómez Cama, José María, Pérez Grande, Isabel, Sanchis Kilders, Esteban, Balaguer Jiménez, María, Bellot Rubio, Luis Ramón, Carmona Flores, Manuel, Deutsch, Werner, Fernández Rico, Germán, Fernández Medina, Ana, García Parejo, Pilar, Gasent Blesa, José Luis, Gizón, Laurent, Grauf, Bianca, Herlein, Klaus, Lagg, Andreas, Lange, Tobias, López JIménez, Antonio Carlos, Maue, Thorsten, Meller, Reinhard, Michalik, Harald, Moreno Vacas, Alejandro Miguel, Müller, Reinhard, Nakai, Eiji, Schmidt, Wolfgang, Schou, Jesper, Schühle, Udo, Staub, Jan, Strecker, Hanna María, Torralbo, Ignacio, and Valori, Gherardo

Abstract

The ESA/NASA Solar Orbiter space mission has been successfully launched in February 2020. Onboard is the Polarimetric and Helioseismic Imager (SO/PHI), which has two telescopes, a High Resolution Telescope (HRT) and the Full Disc Telescope (FDT). The instrument is designed to infer the photospheric magnetic field and line-of-sight velocity through differential imaging of the polarised light emitted by the Sun. It calculates the full Stokes vector at 6 wavelength positions at the Fe I 617.3 nm absorption line. Due to telemetry constraints, the instrument nominally processes these Stokes profiles onboard, however when telemetry is available, the raw images are downlinked and reduced on ground. Here the architecture of the on-ground pipeline for HRT is presented, which also offers additional corrections not currently available on board the instrument. The pipeline can reduce raw images to the full Stokes vector with a polarimetric sensitivity of 10−3⋅Ic or better., BMWi - Bundesministerium für Wirtschaft und Energie (Alemania), MPG - Max-Planck-Gesellschaft (Alemania), Ministerio de Ciencia e Innovación de España - MCIU, Instituto de Astrofísica de Andalucía - CSIC (España), CNES - Centre National d'études spatiales (Francia), Fondos FEDER, Agencia Estatal de Investigación - AEI (ESpaña), Sección Deptal. de Óptica (Óptica), Fac. de Óptica y Optometría, TRUE, pub

Published
2022

12. Metis: the Solar Orbiter visible light and ultraviolet coronal imager

Author

Antonucci, Ester, primary, Romoli, Marco, additional, Andretta, Vincenzo, additional, Fineschi, Silvano, additional, Heinzel, Petr, additional, Moses, J. Daniel, additional, Naletto, Giampiero, additional, Nicolini, Gianalfredo, additional, Spadaro, Daniele, additional, Teriaca, Luca, additional, Berlicki, Arkadiusz, additional, Capobianco, Gerardo, additional, Crescenzio, Giuseppe, additional, Da Deppo, Vania, additional, Focardi, Mauro, additional, Frassetto, Fabio, additional, Heerlein, Klaus, additional, Landini, Federico, additional, Magli, Enrico, additional, Marco Malvezzi, Andrea, additional, Massone, Giuseppe, additional, Melich, Radek, additional, Nicolosi, Piergiorgio, additional, Noci, Giancarlo, additional, Pancrazzi, Maurizio, additional, Pelizzo, Maria G., additional, Poletto, Luca, additional, Sasso, Clementina, additional, Schühle, Udo, additional, Solanki, Sami K., additional, Strachan, Leonard, additional, Susino, Roberto, additional, Tondello, Giuseppe, additional, Uslenghi, Michela, additional, Woch, Joachim, additional, Abbo, Lucia, additional, Bemporad, Alessandro, additional, Casti, Marta, additional, Dolei, Sergio, additional, Grimani, Catia, additional, Messerotti, Mauro, additional, Ricci, Marco, additional, Straus, Thomas, additional, Telloni, Daniele, additional, Zuppella, Paola, additional, Auchère, Frederic, additional, Bruno, Roberto, additional, Ciaravella, Angela, additional, Corso, Alain J., additional, Alvarez Copano, Miguel, additional, Aznar Cuadrado, Regina, additional, D’Amicis, Raffaella, additional, Enge, Reiner, additional, Gravina, Alessio, additional, Jejčič, Sonja, additional, Lamy, Philippe, additional, Lanzafame, Alessandro, additional, Meierdierks, Thimo, additional, Papagiannaki, Ioanna, additional, Peter, Hardi, additional, Fernandez Rico, German, additional, Giday Sertsu, Mewael, additional, Staub, Jan, additional, Tsinganos, Kanaris, additional, Velli, Marco, additional, Ventura, Rita, additional, Verroi, Enrico, additional, Vial, Jean-Claude, additional, Vives, Sebastien, additional, Volpicelli, Antonio, additional, Werner, Stephan, additional, Zerr, Andreas, additional, Negri, Barbara, additional, Castronuovo, Marco, additional, Gabrielli, Alessandro, additional, Bertacin, Roberto, additional, Carpentiero, Rita, additional, Natalucci, Silvia, additional, Marliani, Filippo, additional, Cesa, Marco, additional, Laget, Philippe, additional, Morea, Danilo, additional, Pieraccini, Stefano, additional, Radaelli, Paolo, additional, Sandri, Paolo, additional, Sarra, Paolo, additional, Cesare, Stefano, additional, Del Forno, Felice, additional, Massa, Ernesto, additional, Montabone, Mauro, additional, Mottini, Sergio, additional, Quattropani, Daniele, additional, Schillaci, Tiziano, additional, Boccardo, Roberto, additional, Brando, Rosario, additional, Pandi, Arianna, additional, Baietto, Cristian, additional, Bertone, Riccardo, additional, Alvarez-Herrero, Alberto, additional, García Parejo, Pilar, additional, Cebollero, María, additional, Amoruso, Mauro, additional, and Centonze, Vito, additional

Published
2020
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15. End-to-end tests of the TuMag instrument for the SUNRISE III mission

Author

Evans, Christopher J., Bryant, Julia J., Motohara, Kentaro, Álvarez Herrero, Alberto, Garranzo-García, Daniel, Núnez, Armonía, Silva-López, Manuel, Campos-Jara, Antonio, García Parejo, Pilar, Cebollero, María, Atienzar, Julia, Bailén, Francisco J., Blanco Rodríguez, Julian, Santamarina, Pablo, Orozco Suárez, David, and del Toro Iniesta, Jose Carlos

Published
2022
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18. Nonideal optical response of liquid crystal variable retarders and its impact on their performance as polarization modulators.

Author

García Parejo, Pilar, Campos-Jara, Antonio, García-Caurel, Enric, Arteaga, Oriol, and Álvarez-Herrero, Alberto

Subjects
LIQUID crystals, MUELLER calculus, STOKES parameters, CALIBRATION, SPACETIME, BIREFRINGENCE
Abstract

Liquid crystal variable retarders (LCVRs) will be used for the first time in a space instrument, the Solar Orbiter mission of the European Space Agency, as polarization states analyzers (PSAs). These devices will determine the Stokes parameters of the light coming from the Sun by temporal polarization modulation, using the so-called modulation matrix O. This is a matrix constituted by the first rows of properly selected PSA Mueller matrices. Calibrating a space instrument, in particular, finding O, is a critical point because in a spacecraft there is no possibility of physical access. Due to the huge difficulty in calibrating the complete instruments in all possible scenarios, a more complete calibration of the individual components has been done in ground in order to make extrapolations to obtain O in-flight. Nevertheless, apart from the individual calibrations, the experimental errors and nonideal effects that inhibit the system to reach the designed and theoretical values must be known. In this work, description and study of these effects have been done, focusing on the nonideal effects of the LCVRs and the azimuthal misalignments between the optical components of the PSA during the mechanical assembly. The Mueller matrix of a representative LCVR has been measured and mathematically decomposed by logarithm decomposition, looking for values of circular birefringence and fast axis angle variations as a function of voltage. These effects, in the absence of other nonidealities, affect the polarimetric performance, reducing the polarimetric efficiencies in some cases until 11%. Nevertheless, in this case, they are negligible if compared to the other nonideality studied, which are the azimuthal misalignments between the PSA optical components. The study presented in this work is key to extrapolate the PSA O matrix if the expected instrumental set-point temperatures are not reached in flight and can be used for the design and implementation of other polarimetric instruments. [ABSTRACT FROM AUTHOR]

Published
2020
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19. The High Resolution Telescope (HRT) of the Polarimetric and Helioseismic Imager (PHI) onboard Solar Orbiter

Author

Gandorfer, Achim M., primary, Grauf, Bianca, primary, Staub, Jan, primary, Woch, Joachim, primary, Solanki, Sami K., primary, Bischoff, Jörg, primary, García Parejo, Pilar, primary, Appourchaux, Thierry, primary, Del Toro Iniesta, Jose Carlos, primary, Álvarez-Herrero, Alberto, primary, Hirzberger, Johann, primary, Schmidt, Wolfgang, primary, and Volkmer, Reiner, primary

Published
2018
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