Yosuke Minowa (Subaru Telescope)
ULTIMATE-Subaru is a next large facility instrument program after PFS, which will develop wide-field near-infrared (NIR) imager and multi-object spectrograph with the aid of ground-layer adaptive optics system (GLAO) at the Cassegrain and Nasmyth foci of the telescope in mid-2020s. The GLAO is an adaptive optics system that uniformly improves image quality (less than 0.2 arcsec in K-band) over the wide field of view (~20 arcmin) by correcting only for the turbulence at the ground layer of the Earth’s atmosphere. The ULTIMATE-Suabru will enhance the Subaru's survey capability together with HSC and PFS, which in turn will provide excellent targets to follow up with TMT for detailed spectroscopic and IFU analyses in 2020s and beyond. In this presentation, we will introduce an overview of the ULTIMATE-Subaru project and present preliminary results of the conceptual design of the GLAO system.