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As this six-part tutorial explains, it takes more than a click of a button to generate pictures from the Hubble Space Telescope. The tutorial describes the kind of raw data that is gathered through Hubble, touching on how that data may be processed by computer software programs. Users discover why technicians routinely combine multiple images of the same area to produce a final picture. The tutorial also explores how Hubble's data is translated into natural color pictures and into pictures colorized for a particular purpose. In an interactive feature, users can overlay red, blue, and green photos to make a natural color image. Enlargeable images illustrate each page of the tutorial. Copyright 2005 Eisenhower National Clearinghouse
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