photochronograph
/ˌfəʊtə(ʊ)ˈkrɒnəɡrɑːf/ /ˌfəʊtə(ʊ)ˈkrɒnəɡraf/noun
1An early form of cinematograph as developed by E. J. Marey.
2Any of various instruments for producing a timed graphical record of events that occur at very short intervals or are of very short duration.
Origin
Late 19th century; earliest use found in Nature: a weekly journal of science. From photo- + chronograph.