THE 76 ACTION EXPOSURE SEQUENCE
Each stage of which had to be perfect. The list looks like Egyptian hieroglyphics in places. Each exposure took 20 mins to execute. Assuming you got it right. Note extreme exposures and apertures - 24 secs at f40 etc. There is no f40 on a medium format film camera. Elliott had the inner cam of the lens ground down to extend the aperture from f22 to f40. This modus operandi list was essential at the time, as it is impossible to remember 76 actions in sequence, never mind execute them perfectly.
If you count the exposures there are in fact eleven, all of which had to balance with each other. The rear central circle revolved between exposures to achieve the polychromatic colours. The foreground halo was a revolving light source drawn in with a long exposure and a guide rail, which was removed after each exposure. Incredibly difficult.