Raptor-software and applications on bluegene/l

A split image rear-viewing system for a motor vehicle includes a primary mirror mounted adjacent the vehicle roof which provides a lower sight path looking directly through the vehicle windows and an upper sight path looking over the roof through a rearwardly facing periscope. The individual sight paths are optically separated by a narrow occulted strip but blend into a single observed image rearwardly of the vehicle due to the pupillary diameter of the observer's eyes.