SP-474 Voyager 1 and 2 Atlas of Six Saturnian Satellites

Figure C-1. The principle of the digital image.

Figure C-1. The principle of the digital image. A stream of numbers (density numbers (DNs)) representing shades of gray is received from the spacecraft by tracking stations on Earth. Each DN is placed in its correct location in an array of rows and columns ("raster") by a computer and is then replaced by its correct gray shade and printed on film by a computer-driven film-writing device. (Illustration by Susan L. Davis)

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