Updated Multichannel Infrared Solar Spectrograph at PurpleMountain Observatory

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, HeI 10830Å, cAII 8542Å and H_α, simultaneously. The spectral resolutions of these lines are 0.04776, 0.05113 and 0.05453Å 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 there exists horizontal expansion in addition to the quick radial motion in the flare spray.