Calibration procedures for the CHASE/HIS science data

نویسندگان

چکیده

The H{\alpha} line is an important optical in solar observations containing the information from photosphere to chromosphere. To study mechanisms of eruptions and plasma dynamics lower atmosphere, Chinese Solar Explorer (CHASE) was launched into a Sun-synchronous orbit on October 14, 2021. scientific payload CHASE satellite Imaging Spectrograph (HIS). CHASE/HIS acquires, for first time, seeing-free spectroscopic with high spectral temporal resolutions. It consists two observational modes. raster scanning mode provides full-Sun or region-of-interest spectra at (6559.7-6565.9 {\AA}) Fe I (6567.8-6570.6 wavebands. continuum imaging obtains photospheric images around 6689 {\AA}. In this paper, we present detailed calibration procedures science data, including dark-field flat-field correction, slit image curvature wavelength intensity calibration, coordinate transformation. higher-level data products can be directly used research.

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ژورنال

عنوان ژورنال: Science China Physics, Mechanics & Astronomy

سال: 2022

ISSN: ['1869-1927', '1674-7348']

DOI: https://doi.org/10.1007/s11433-022-1900-5