NASA Photo ID: S91-50686           File Name: 10063358.jpg
  Film Type: 4x5                     Date Taken: 11/07/91
  Title: Magellan 3D view of Venus impact craters
  Description:
  Three impact craters in three-dimensional perspective located approximately 
  27 degrees south latitude, 339 degrees east longitude in the northwestern 
  portion of Lavinia Planitia.  The viewpoint is located southwest of Howe 
  Crater which appears centered in the lower portion of the image.  Howe has
  a  diameter of 37.3 kilometers (23.1 miles) located at 28.6 degrees south 
  latitude, 337.1 degrees east longitude.  Danilova, a crater with a diameter 
  of 47.6 kilometers (29.5 miles) and located at 26.35 degrees south latitude 
  and 337.5 east longitude, appears above and to the left of Howe in the
  image.  Aglaonice, a crater with a diameter of 62.7 kilometers (38.9 miles)
  and  located at 26.5 degrees south latitude and 340 degrees east longitude
  is on  the right of Danilova.  Magellan synthetic aperture radar data is
  combined  with radar altimetry to develop a 3D map of the surface.  Rays
  cast in a  computer intersect the surface to create a 3D view.  Simulated
  color and a  digital elevation map developed by the United States (U.S.)
  Geological Survey  is used to enhance small-scale structure.  The simulated
  hues are based on  color images recorded by the Soviet Venera 13 and 14
  spacecraft.  The image  was processed at the Jet Propulsion Laboratory
  (JPL) Multimission Image  Processing Laboratory and is a single frame from
  a video released at the JPL  news conference 05-29-91.  View provided by
  JPL with alternate number  P-39146.  
  
  Subject terms:
  CRATERS                                 
  LANDFORMS                               
  MAGELLAN SPACECRAFT (NASA)              
  RADAR DATA                              
  VENUS SURFACE                           
  VOLCANOES                               
  

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