Updated Multichannel Infrared Solar Spectrograph at Purple Mountain Observatory

Details Updated Multichannel Infrared Solar Spectrograph at Purple Mountain Observatory Updated Multichannel Infrared Solar Spectrograph at Purple Mountain Observatory

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002chphl..19..742l&link_type=abstract

Chinese Physics Letters, Volume 19, Issue 5, pp. 742-744 (2002).

Physics

10

Scientific paper

We describe the newly updated multichannel infrared solar spectrograph at the Purple Mountain Observatory that now uses three Apogee AP7p grade 1 scientific CCDs as its detectors and works at three wavelengths, He I 10 830 Å, Ca II 8542 Å and Hα, simultaneously. The spectral resolutions of these lines are 0.047 76, 0.051 13 and 0.054 53 Å per pixel, respectively. Some observation examples are presented. The observed profiles of the three lines demonstrate that redshift and asymmetry exist in the impulsive phase of the given disc flare and both blueshift and redshift exist in the presented flare spray in the impulsive phase of a limb flare. They also indicate that horizontal expansion exists in addition to the quick radial motion in the flare spray.

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