A Control System for Superimposed High Speed Photographic Records

A control system has been designed for high speed photographic diagnostics based on the action of a rotating mirror. Built from simple circuitry and readily available standard delay units, it can operate independently of the mechanism driving the mirror. The system displays an over‐all jitter of less than 0.05%. It has been used successfully in the accurate superposition of repetitive pulsed discharge images on film.