Imaging polarimetry with the METIS coronagraph of the Solar Orbiter mission

Giuseppe Crescenzio; Silvano Fineschi; Gerardo Capobianco; Gianalfredo Nicolini; Giuseppe Massone; Marco A. Malvezzi; Federico Landini; Marco Romoli; Ester Antonucci

doi:10.1117/12.927432

17 September 2012 Imaging polarimetry with the METIS coronagraph of the Solar Orbiter mission

Giuseppe Crescenzio, Silvano Fineschi, Gerardo Capobianco, Gianalfredo Nicolini, Giuseppe Massone, Marco A. Malvezzi, Federico Landini, Marco Romoli, Ester Antonucci

Author Affiliations +

Proceedings Volume 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray; 84433J (2012) https://doi.org/10.1117/12.927432
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

METIS, the "Multi Element Telescope for Imaging and Spectroscopy", is a coronagraph of the Solar Orbiter mission to be launched in 2017. The METIS coronagraph includes three optical paths for i) broad-band imaging of the full corona in polarized visible-light (590-650 nm); ii) narrow-band coronal imaging in the UV HI Ly α (121.6 nm) and extreme-UV He II Ly α (30.4 nm), and iii) spectroscopic observations of the HI and He II Ly α. This presentation describes the optical design of the METIS visible-light path for imaging polarimetry of the K-corona. The achromatic polarimeter's requirements on polarization sensitivity, achromatic response and instrumental polarization control are described. The expected performances of the visible-light path are also presented.

Citation Download Citation

Giuseppe Crescenzio, Silvano Fineschi, Gerardo Capobianco, Gianalfredo Nicolini, Giuseppe Massone, Marco A. Malvezzi, Federico Landini, Marco Romoli, and Ester Antonucci "Imaging polarimetry with the METIS coronagraph of the Solar Orbiter mission", Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84433J (17 September 2012); https://doi.org/10.1117/12.927432

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