A new flash X-ray source which penetrates thick objects and records shadowgraphs directly on film is discussed. Radiographs with 20 nanosec. exposure time provide hypervelocity stop motion data. Cineradiographs at frame rates to 10 /sec. are provided by a single X-ray tube. Stereo-cineradiographs are provided by tube pairs activated by a single pulser at 180 kV.