MegaPrime is the newest wide-field imager at CFHT, and represents a major upgrade of the telescope upper-end as well as the largest astronomical CCD mosaic ever built.

The wide-field imager, MegaCam, consists of 40 2000 x 4500 pixel CCDs, covering a full 1 degree x 1 degree field-of-view with a resolution of 0.187 arcsec per pixel. The new upper end includes a new image stabilization unit and a guide / focus unit with two independent guide detectors.

MegaPrime is a CFHT project, funded through the instrumentation fund by the Canadian and French Agencies (NRC and CNRS/INSU). Observatoire de Paris and HIA (Victoria) have been contracted for the design and fabrication of some of the MegaPrime components. MegaCam is built in France by CEA.