Camera timing was too perfect to be remotely controlled from that distance! Man,? its hard enough to keep a camera traced on an object 20 meters away... The whole thing was a fake & it was Stanley Kubriks' secret to take to the grave...
i work in the film industry and i? can tell you the technology did not exist when this was made to do the pan like this. Also weight was a critical factor and carry the amount of equipment necesary to create the single unecessary pan up is absurd.