Plans for observing Jupiter, Io and its torus at Lenghu Observatory in China

The Jupiter system is the most interesting in the solar system. The Jupiter is the biggest and the most massive and possesses the strongest magnetic field. The first moon of Jupiter, the Io, is the only moon in the solar system that has volcanic eruptions. These characteristics make Jupiter one of the top priorities for deep space exploration in China and other countries. Earth-based remote sensing can provide important information on geological activity of Io, plasma torus evolution, neutral nebula evolution, atmospheric circulation, and internal structure. Recently, a high-quality optical astronomical site was found on the Tibetan Plateau at Lenghu, China. The median of atmospheric seeing is 0.75 arcseconds and the light pollution can be neglected. This site is quite suitable for solar system planet observations. A large aperture optical telescope with diameter of 1.8 meters is currently under construction at Lenghu by the Institute of Geology and Geophysics, Chinese Academy of Sciences. Two important instruments will be mounted to the telescope: a Jovian coronograph and a Jovian seismological imager. These instrument will continuesly observe Jupiter, Io and its torus from 2025 summer on.