1. A system for determining geometric characteristics of reflective surfaces, the system comprising: a specimen including a reflective surface; a target structure including a plurality of feature points configured to be reflected in the reflective surface; an imaging system including a camera configured to capture an image of the reflective surface, the captured image including the plurality of features points of the target structure; and a beam splitter configured to direct light (i) from the target structure to the reflective surface and (ii) from the reflective surface to the camera.