Abstract: A search apparatus and method for use in conjunction with an electro-optical sensor that does not require its own integral scanning mechanism for searching object space for potential targets. The apparatus of the invention comprises a plano mirror movable azimuthally a line perpendicular to and geometrically centered on the focal plane of the electro-optical imaging sensor and further movable about an elevational axis perpendicularly offset from the azimuthal axis of rotation and outside of the field of view of the electro-optical imaging system.The method of the invention comprises rotating the plano mirror about its azimuthal axis of rotation while inclining (or declining) the mirror about its elevational axis of rotation to produce a spiral, substantially full hemispherical search without any corresponding movement of the electro-optical imaging sensor.