A method and system are presented for monitoring a field of regard. At least a part of a field of regard is imaged by concurrently collecting a plurality of light components propagating from a plurality of zones, respectively, located within the field of regard, a combined collected light beam is produced, and corresponding data is generated being indicative of a combined image of the at least part of the field of regard formed by the collected light components. This image data indicative of the combined image data is processed and analyzed, and if existence of a certain condition or event is identified in the image data, a corresponding control signal is generated.