1. A laser tracker for progressively tracking a reflective object and for determining the position of the object, the laser tracker comprising: a base defining a standing axis, a beam deflection unit for emitting measuring radiation and for receiving at least a part of the measuring radiation reflected on the object, wherein the beam deflection unit is pivotable by a motor about the standing axis and an inclination axis relative to the base and a measuring axis is defined by an emission direction of the measuring radiation, a distance measuring unit for precisely determining the distance to the object by means of the measuring radiation, an angle measuring functionality for determining an alignment of the beam deflection unit relative to the base, a target search unit having: illumination means for generating electromagnetic illumination radiation and at least one target search camera having a position-sensitive detector, wherein the target search camera defines a target search field of vision, wherein the target search field of vision can be illuminated by means of the illumination means, wherein using the target search camera, a search image can be acquired for the position-dependent identification of targets and wherein positions of illumination radiation reflections, which are acquired in the search image and represent respective reflective targets, can be identified and determined as search image positions in the search image, an overview camera, wherein an overview field of vision of the overview camera overlaps with the target search field of vision, wherein using the overview camera, an overview image, which at least partially reproduces the visual spectral range, can be acquired for the display for a user, and wherein the target search camera and the overview camera are arranged in known position and alignment relationship relative to one another, and a processing unit, wherein the laser tracker has a target provision functionality such that, upon execution of the target provision functionality by the processing unit, graphic markings are incorporated into the overview image by means of image processing as a function of the search image positions, so that the markings represent the targets in the overview image.