Sunrise Chromospheric Infrared SpectroPolarimeter (SCIP) for sunrise III: system design and capability

Y. Katsukawa; J. C. del Toro Iniesta; S. K. Solanki; M. Kubo; H. Hara; T. Shimizu; T. Oba; Y. Kawabata; T. Tsuzuki; F. Uraguchi; Y. Nodomi; K. Shinoda; T. Tamura; Y. Suematsu; R. Ishikawa; R. Kano; T. Matsumoto; K. Ichimoto; S. Nagata; C. Quintero Noda; T. Anan; D. Orozco Suárez; M. Balaguer Jiménez; A. C. López Jiménez; J. P. Cobos Carrascosa; A. Feller; T. Riethmueller; A. Gandorfer; A. Lagg

doi:10.1117/12.2561223

13 December 2020 Sunrise Chromospheric Infrared SpectroPolarimeter (SCIP) for sunrise III: system design and capability

Y. Katsukawa, J. C. del Toro Iniesta, S. K. Solanki, M. Kubo, H. Hara, T. Shimizu, T. Oba, Y. Kawabata, T. Tsuzuki, F. Uraguchi, Y. Nodomi, K. Shinoda, T. Tamura, Y. Suematsu, R. Ishikawa, R. Kano, T. Matsumoto, K. Ichimoto, S. Nagata, C. Quintero Noda, T. Anan, D. Orozco Suárez, M. Balaguer Jiménez, A. C. López Jiménez, J. P. Cobos Carrascosa, A. Feller, T. Riethmueller, A. Gandorfer, A. Lagg

Author Affiliations +

Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114470Y (2020) https://doi.org/10.1117/12.2561223
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

The Sunrise balloon-borne solar observatory carries a 1 m aperture optical telescope and provides us a unique platform to conduct continuous seeing-free observations at UV-visible-IR wavelengths from an altitude of higher than 35 km. For the next flight planned for 2022, the post-focus instrumentation is upgraded with new spectro- polarimeters for the near UV (SUSI) and the near-IR (SCIP), whereas the imaging spectro-polarimeter Tunable Magnetograph (TuMag) is capable of observing multiple spectral lines within the visible wavelength. A new spectro-polarimeter called the Sunrise Chromospheric Infrared spectroPolarimeter (SCIP) is under development for observing near-IR wavelength ranges of around 770 nm and 850 nm. These wavelength ranges contain many spectral lines sensitive to solar magnetic fields and SCIP will be able to obtain magnetic and velocity structures in the solar atmosphere with a suﬃcient height resolution by combining spectro-polarimetric data of these lines. Polarimetric measurements are conducted using a rotating waveplate as a modulator and polarizing beam splitters in front of the cameras. The spatial and spectral resolutions are 0.2" and 2 105, respectively, and a polarimetric sensitivity of 0.03 % (1σ) is achieved within a 10 s integration time. To detect minute polarization signals with good precision, we carefully designed the opto-mechanical system, polarization optics and modulation, and onboard data processing.

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Y. Katsukawa, J. C. del Toro Iniesta, S. K. Solanki, M. Kubo, H. Hara, T. Shimizu, T. Oba, Y. Kawabata, T. Tsuzuki, F. Uraguchi, Y. Nodomi, K. Shinoda, T. Tamura, Y. Suematsu, R. Ishikawa, R. Kano, T. Matsumoto, K. Ichimoto, S. Nagata, C. Quintero Noda, T. Anan, D. Orozco Suárez, M. Balaguer Jiménez, A. C. López Jiménez, J. P. Cobos Carrascosa, A. Feller, T. Riethmueller, A. Gandorfer, and A. Lagg "Sunrise Chromospheric Infrared SpectroPolarimeter (SCIP) for sunrise III: system design and capability", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114470Y (13 December 2020); https://doi.org/10.1117/12.2561223

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