A sighting system is disclosed, comprising a housing with small upper mirror mounted in its upper center, redirecting light from a single objective lens set, and a larger lower mirror mounted coaxially relative to the lens set and upper mirror, both mirrors set at 45° and redirecting light at 90° angles to the lens set. The smaller mirror is positioned closer than the lower mirror to the lens set. A night camera system is used for receiving an image through the lens set redirected by the lower mirror and amplified through an intensifier before transmission to a video display monitor(s). A day camera system receiving the image from the lens set redirected by the smaller mirror transmits the image to the monitor(s) for separate display of the image, enabling simultaneous capture of the optimum amount of light by each camera, maximizing the housing's diametrical space to receive incoming light.