Polarimetric characterization of the coronal diagnostic experiment (CODEX)

Marta Casti; Jeffrey S. Newmark; Yeon-Han Kim; Gerardo Capobianco; Hervé Haudemand; Donguk Song; Sung-Hong Park; Su-Chan Bong; Kyungsuk Cho; Seonghwan Choi; Qian Gong; Ji-Hye Baek; Jongyeob Park; Jihun Kim; Heesu Yang; Nelson L. Reginald; Nicholeen M. Viall; Silvano Fineschi; Federico Landini; Davide Loreggia; Luca Zangrilli; Lucia Abbo; Jason Budinoff

doi:10.1117/12.3020730

23 August 2024 Polarimetric characterization of the coronal diagnostic experiment (CODEX)

Marta Casti, Jeffrey S. Newmark, Yeon-Han Kim, Gerardo Capobianco, Hervé Haudemand, Donguk Song, Sung-Hong Park, Su-Chan Bong, Kyungsuk Cho, Seonghwan Choi, Qian Gong, Ji-Hye Baek, Jongyeob Park, Jihun Kim, Heesu Yang, Nelson L. Reginald, Nicholeen M. Viall, Silvano Fineschi, Federico Landini, Davide Loreggia, Luca Zangrilli, Lucia Abbo, Jason Budinoff

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130927O (2024) https://doi.org/10.1117/12.3020730
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The COronal Diagnostic EXperiment (CODEX) is the solar coronagraph developed by NASA-Goddard Space Flight Center in collaboration with the Korea Astronomy and Space Science Institute (KASI), and the Italian National Institute for Astrophysics (INAF). CODEX will be launched in September 2024 and will be hosted by the International Space Station (ISS) as an external payload. CODEX is designed to observe the linearly polarized K-corona within the wavelength range 385-440 nm to obtain simultaneous measurements of density, temperature, and radial velocity of the coronal electrons. CODEX is a two-stage externally occulted coronagraph, with a field of view of 2.67 degrees, featuring two fold mirrors, and a series of occulting elements that minimize the amount of diffracted light reaching the detector. The polarization of the solar corona is measured by means of a commercial polarization image sensor manufactured by Sony, the IMX253MZR, that spatially modulates the incoming light beam. The polarimetric characterization of the instrument is one of the fundamental steps to derive the desired physical quantities of the solar corona from observations. It is hence crucial to understand how the instrument modifies the incident polarized light, especially due to the presence of the two fold mirror system within the light path, which is notoriously a source of polarization aberrations. This work describes the polarimetric characterization of the CODEX coronagraph, to determine an estimation of the instrumental polarization, and the results are presented.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Marta Casti, Jeffrey S. Newmark, Yeon-Han Kim, Gerardo Capobianco, Hervé Haudemand, Donguk Song, Sung-Hong Park, Su-Chan Bong, Kyungsuk Cho, Seonghwan Choi, Qian Gong, Ji-Hye Baek, Jongyeob Park, Jihun Kim, Heesu Yang, Nelson L. Reginald, Nicholeen M. Viall, Silvano Fineschi, Federico Landini, Davide Loreggia, Luca Zangrilli, Lucia Abbo, and Jason Budinoff "Polarimetric characterization of the coronal diagnostic experiment (CODEX)", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130927O (23 August 2024); https://doi.org/10.1117/12.3020730

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