The challenging target position calibration task was accomplished in the recently upgraded AEDC 7V Chamber by use of a newly developed instrument termed the 7V Alignment Monitor System (7V-AMS). The 7V-AMS is essentially a resident, reference sensor consisting of a high quality imaging telescope, staring focal plane array (FPA), and FPA frame data acquisition and image processing system. A sub-pixel image centroiding routine permits accurate and precise determination of target image position. Unorthodox operation of the otherwise off-the-shelf FPA and frame data acquisition system results in a radiometric sensitivity that permits the 7V-AMS to 'see' the high to midrange radiometric levels of all 7V calibration and target simulation sources. This sensitivity range, coupled with its high quality imaging capability, allowed the 7V-AMS to inspect the radiation patterns of the newly activated radiometric calibration and target simulation equipment, to pinpoint sources of stray radiation, and to detect and display faint ghost images. As part of its primary task, target position calibration, the 7V-AMS was used to precisely define the coordinate axis relationships of all equipment capable of controlling target position. This paper describes the 7V-AMS salient design features and also presents some results of its first application in the 7V Chamber.