1. A multi-imaging device for capturing multiple images of an object, the device comprising: a multiplexed optical system that simultaneously forms multiple optical images of an object, the multiple optical images formed at a sensor plane, wherein the multiple optical images are interleaved at the sensor plane; and a filter fixture located at a conjugate plane to the sensor plane, the filter fixture allowing a user of the multi-imaging device to insert different filter assemblies into the filter fixture; wherein for filter assemblies that are spatially multiplexed with different filter regions of a size and location appropriate for the multiplexed optical system, the filter fixture positions the inserted filter assembly so that different optical images are filtered by different filter regions of the filter assembly before reaching the sensor plane.