In spite of high demands in a lot of industrial fields, it is viewed as difficult to capture a stuff flying at the speed of hundreds [m/s] order same as acoustic velocity. A high-frame-rate camera (≈10000 [fps]) is often adopted to observe it. However, this method gives us only a short-lasting recorded data. Furthermore, a quite short exposure time (≈ 5 [µs]) and regionally concentrated illumination are required in order to cut down a motion blur. In this paper, a measurement means specialized for such a high-speed object is proposed. A high-speed gaze controller, called Saccade Mirror keeps its camera gaze casting the matter while soaring. We successfully obtained the longer images with brightness and a little motion blur.
