structural:reformatting, structural:summarization
"Star Gate" sequence

The coloured lights in the Star Gate sequence were accomplished by slit-scan photography of thousands of high-contrast images on film, including Op art paintings, architectural drawings, Moiré patterns, printed circuits, and electron-microscope photographs of molecular and crystal structures. Known to staff as "Manhattan Project", the shots of various nebula-like phenomena, including the expanding star field, were coloured paints and chemicals swirling in a pool-like device known as a cloud tank, shot in slow motion in a dark room. The live-action landscape shots were filmed in the Hebridean islands, the mountains of northern Scotland, and Monument Valley. The colouring and negative-image effects were achieved with different colour filters in the process of making duplicate negatives in an optical printer.