(1) A camera used for photographing rockets or missiles, and producing photographs with sufficient metric fidelity that the object's trajectory can be determined photogrammetrically. Erroneously called a tracking camera. A ballistic camera may be of the fixed or the tracking type. A fixed ballistic camera keeps its optical axis pointed in the same direction while taking many pictures, and a photograph made by the camera shows the missile as a thin streak interrupted by spacings made by opening and closing the camera's shutter. A tracking ballistic camera keeps its optical axis pointed in the general direction of the object being photographed, and a photograph made by such a camera shows the object as a dot; the mounting often carries one or two graduated circles to show the direction in which the camera is pointed (this may be photographed or transmitted by selsyn motors to a recorder). (2) Any camera used in ballistics.