The Multiband Imaging and Slitless Spectroscopy Survey of China’s Manned Space Program

Recently, China Manned Space Agency announced one of its key science projects -- the large-scale multiband imaging and slitless spectroscopy survey. It will be carried out by a 2m-class telescope in the same orbit as the Chinese space station, and the telescope can dock with the space station for maintenance or repair as needed. The plan is to cover roughly 40% of the whole sky in at least 6 wide band filters from 250nm to 1000nm, reaching an average depth of AB 25.5 mag (point source, 5-sigma). Low resolution slitless spectra will be taken at the same time over the same area reaching a broad band depth of AB 22-23 mag. Deeper exposures would be made over selected areas across the sky. I will give a brief introduction to the project in this talk and discuss the expected performance from simulations.