Building on an extensive and successful experience in Adaptive Optics (AO) and on recent developments made in its funding nations, the Canada-France-Hawaii-Telescope Corporation (CFHT) is studying the VASAO concept: an integrated AO system that would allow diffraction limited imaging of the whole sky in the visible, thanks to a polychromatic mode-less laser guide star coupled to a specially designed tip-tilt sensor used with Pueo-Hou, a refurbished and improved AO bonnette based on Pueo, the current CFHT AO system.

VASAO will open a new era in astronomical observations in the visible, providing a 100% coverage of the Mauna Kea sky at a resolution better than the Hubble Space Telescope and similar in the visible to what larger telescopes can obtain in the near-infrared.