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PUBLIC INFORMATION OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIFORNIA 91109. TELEPHONE (818) 354-5011
PHOTO CAPTION Magellan MGN-115
May 26, 1993
The northern hemisphere is displayed in this global view of the
surface of Venus. The north pole is at the center of the image, with
0 degrees, 90 degrees, 180 degrees, 270 degrees east longitudes at the
6, 3, 12, and 9 o'clock positions, respectively, of an imaginary clock
face. Magellan synthetic aperture radar mosaics from the three eight-
month cycles of Magellan radar mapping are mapped onto a computer-
simulated globe to create this image. Magellan obtained coverage of
98 percent of the surface of Venus. Remaining gaps are filled with
data from previous missions, (the Soviet Venera 15 and 16 radar and
Pioneer-Venus Orbiter altimetry) and data from Earth-based radar
observations from the Arecibo radio telescope. Simulated color is
used to enhance small-scale structures. The simulated hues are based
on color images recorded by the Venera 13 and 14 landing craft.
Maxwell Montes, the planet's highest mountain at 11 kilometers (6.6
miles) above the average elevation, is the bright feature in the lower
center of the image. Other terrain types visible in this image
include tessera, ridge belts, lava flows, impact craters and coronae.
The image was produced by the Solar System Visualization Project and
the Magellan Science team at the Jet Propulsion Laboratory
Multimission Image Processing Laboratory. The Magellan mission is
managed by JPL for NASA's Office of Space Science.