An image-stabilization, high-resolution camera for the Canada-France-Hawaii telescope

An image-stabilizing camera has been constructed at the Dominion Astrophysical Observatory, in collaboration with the University of Montreal and the Canada-France-Hawaii Telescope (CFHT) Corporation, for use at the prime focus of CFHT. This instrument incorporates a fast guider to follow image motion and a "smart" shutter to reject periods of image degradation. An aperture wheel is also available to study the improvement in image quality made by stopping down the entrance aperture of the camera. The design and performance characteristics of the instrument are reviewed here.