Sighting system and method for operating a sighting system

The present invention relates to a sighting system for aiming at a target, comprising a plurality of imaging sensors, a projector and a control unit, wherein the control unit is configured to control the projector so that this harmonization mark during operation of the visor installation and during a predetermined time interval to is projected at least one imaging sensor and deactivated during operation of the visor system and outside of the predetermined time interval.