PDS_VERSION_ID               = "PDS3"

RECORD_TYPE                  = FIXED_LENGTH
RECORD_BYTES                 = 360
FILE_RECORDS                 = 180
^ARRAY                       = "TOPOGRD.IMG"

SPACECRAFT_NAME              = "MAGELLAN"
TARGET_NAME                  = "VENUS"
INSTRUMENT_NAME              = "RADIO SCIENCE SUBSYSTEM"
DATA_SET_ID                  = "MGN-V-RDRS-5-TOPO-L2-V1.0"
PRODUCT_ID                   = "TOPOGRD-IMG"
PRODUCT_RELEASE_DATE         = 1997-08-01
DESCRIPTION                  = "This file contains a digital,
1 X 1 degree resolution map of the topography of Venus.  It is
a 360 x 180 grid from -89.5 to 89.5 degrees latitude, and 0.5 to
359.5 degrees longitude.  The topography is derived from Ford and
Pettengill (Journal of Geophysical Research, 97, E8, 13103-13114,
1992) Magellan topography data completed with Pioneer Venus 
Orbiter topography data.

OBJECT                     = IMAGE
  LINES                        = 180
  LINE_SAMPLES                 = 360
  SAMPLE_TYPE                  = UNSIGNED_INTEGER 
  SAMPLE_BITS                  = 8
  UNIT                         = "KILOMETER"
  OFFSET                       = 2.492
  SCALING_FACTOR               = 0.0478
  DESCRIPTION                  = "A byte-scaled image showing the
  topography of Venus.  The following algorithm translates topography
  to an image DN:
         DN = (TOPOGRAPHY <KILOMETERS> + 2.492) / 0.0478"
END_OBJECT                 = IMAGE

OBJECT               = IMAGE_MAP_PROJECTION
  ^DATA_SET_MAP_PROJECTION     = "DSMP.CAT"
  COORDINATE_SYSTEM_TYPE       = BODY_FIXED_ROTATING
  COORDINATE_SYSTEM_NAME       = PLANETOCENTRIC
  MAP_PROJECTION_TYPE          = "SIMPLE CYLINDRICAL"
  A_AXIS_RADIUS                = 6051.0 <KM>
  B_AXIS_RADIUS                = 6051.0 <KM>
  C_AXIS_RADIUS                = 6051.0 <KM>
  FIRST_STANDARD_PARALLEL      = "N/A"
  SECOND_STANDARD_PARALLEL     = "N/A"
  POSITIVE_LONGITUDE_DIRECTION = "EAST"
  CENTER_LATITUDE              = 0.0 <DEGREES>
  CENTER_LONGITUDE             = 180.0 <DEGREES>
  REFERENCE_LATITUDE           = "N/A"
  REFERENCE_LONGITUDE          = "N/A"
  LINE_FIRST_PIXEL             = 1
  LINE_LAST_PIXEL              = 180
  SAMPLE_FIRST_PIXEL           = 1
  SAMPLE_LAST_PIXEL            = 360
  MAP_PROJECTION_ROTATION      = 0.0 <DEGREES>
  MAP_RESOLUTION               = 1.0 <DEGREES>
  MAP_SCALE                    = "N/A"
  MAXIMUM_LATITUDE             = 89.5 <DEGREES>
  MINIMUM_LATITUDE             = -89.5 <DEGREES>
  EASTERNMOST_LONGITUDE        = 359.5 <DEGREES>
  WESTERNMOST_LONGITUDE        = 0.5 <DEGREES>
  LINE_PROJECTION_OFFSET       = 89.5
  SAMPLE_PROJECTION_OFFSET     = 0
END_OBJECT           = IMAGE_MAP_PROJECTION

END