A new technique for cinematographic recording at 24 frames per sec of variations in auroral forms is discussed. The equipment is a very sensitive image orthicon television system from whose monitor the image is photographed with a 16-mm movie camera. The technique permits changes in auroral forms to be studied which occur in as little as 1/24 sec.
Grady T. Hicks and T. Neil Davis, "Cinematography of Spatial and Temporal Variations in Auroral Forms with an Image Orthicon TV System," Appl. Opt. 4, 187-188 (1965)