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

F. Kahil*, A. Gandorfer, J. Hirzberger, D. Orozco Suárez, K. Albert, N. Albelo Jorge, T. Appourchaux, A. Alvarez-Herrero, J. Blanco Rodríguez, D. Germerott, L. Guerrero, P. Gutierrez Marquez, J. Sinjan, D. Calchetti, M. Kolleck, S. K. Solanki, J. C. del Toro Iniesta, R. Volkmer, J. Woch, B. FietheJ. M.Gómez Cama, I. Pérez-Grande, E. Sanchis Kilders, M. Balaguer Jiménez, L. R.Bellot Rubio, M. Carmona, W. Deutsch, G. Fernandez-Rico, A. Fernández-Medina, P. García Parejo, J. L.Gasent Blesa, L. Gizon, B. Grauf, K. Heerlein, A. Korpi-Lagg, T. Lange, A. López Jiménez, T. Maue, R. Meller, H. Michalik, A. Moreno Vacas, R. Müller, E. Nakai, W. Schmidt, J. Schou, U. Schühle, J. Staub, H. Strecker, I. Torralbo, G. Valori

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

6 Citations (Scopus)
3 Downloads (Pure)

Abstract

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 %.

Original languageEnglish
Title of host publicationSpace Telescopes and Instrumentation 2022
Subtitle of host publicationOptical, Infrared, and Millimeter Wave
EditorsLaura E. Coyle, Shuji Matsuura, Marshall D. Perrin
PublisherSPIE
ISBN (Electronic)978-1-5106-5341-2
DOIs
Publication statusPublished - 2022
MoE publication typeA4 Conference publication
EventSpace Telescopes and Instrumentation: Optical, Infrared, and Millimeter Wave - Montreal, Canada
Duration: 17 Jul 202222 Jul 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume12180
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSpace Telescopes and Instrumentation
Country/TerritoryCanada
CityMontreal
Period17/07/202222/07/2022

Keywords

  • high resolution
  • MTF
  • PSF
  • SO/PHI
  • SO/PHI-HRT
  • Solar Orbiter
  • wavefront error
  • Zernike

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