6:15 PM - 7:30 PM
[PPS01-P10] Coordinated observation of Io plasma torus using Hisaki/EXCEED and gourd-based telescopes
The monochromatic imager consists of a coronagraph and a narrow-band filter (FWHM=0.9nm). The coronagraph has an occulting mask and a Lyot stop to reduce contamination by diffraction from Jupiter. Field-of-view, 8 arc minutes, is wide enough to cover both sides of the plasma torus. A platescale and integration time are 1arcsecond/pixel and 20 minutes respectively. We could get 280 images from the observation during December 2014 through January 2015.
Based on a preliminary analysis of the Haleakala 60-cm, we have found variability of dawn-dusk shift of plasma torus which is believed to be related to dawn-dusk asymmetry in EUV brightness as well as sudden brightening of plasma torus. Latest result will be presented at the meeting.