PDS_VERSION_ID                = PDS3
RECORD_TYPE                   = FIXED_LENGTH
FILE_RECORDS                  = 12288
RECORD_BYTES                  = 24576
^IMAGE                        = "MEGT_N_512_1.IMG"
DATA_SET_ID                   = "MGS-M-MOLA-5-MEGDR-L3-V1.0"
PRODUCT_ID                    = "MEGT_N_512_1.IMG"
SPACECRAFT_NAME               = "MARS GLOBAL SURVEYOR"
INSTRUMENT_ID                 = MOLA
INSTRUMENT_NAME               = "MARS ORBITER LASER ALTIMETER"
TARGET_NAME                   = MARS
START_TIME                    = 1997-09-15T19:10:00.000
STOP_TIME                     = 2001-06-30T11:10:40.000
START_ORBIT_NUMBER            = 3
STOP_ORBIT_NUMBER             = 20333
PRODUCT_CREATION_TIME         = 2004-07-21T01:00:00
PRODUCT_VERSION_ID            = "1.0"
PRODUCER_ID                   = MGS_MOLA_TEAM
PRODUCER_FULL_NAME            = "DAVID E. SMITH"
PRODUCER_INSTITUTION_NAME     = "GODDARD SPACE FLIGHT CENTER"
DESCRIPTION                   = "This data product is a topographic
 map of the north pole of Mars at a resolution of 512 pixels per degree,
 based on altimetry data acquired by the Mars Global Surveyor MOLA
 instrument and accumulated over the course of the primary and extended
 mission. The MOLA Precision Experiment Data Records (PEDRs) are the
 source for this data set. Map coordinates use
 the IAU2000 reference system and the areoid defined by the Goddard Mars
 potential model GMM3 (mgm1025) evaluated to degree and order 50. The
 binned data include all MOLA nadir observations from the Mapping Phase
 through the Primary and Extended missions, from the end of aerobraking
 in February 1999 through June 2001."

OBJECT                        = IMAGE
 NAME                         = MEDIAN_TOPOGRAPHY
 LINES                        = 12288
 LINE_SAMPLES                 = 12288
 SAMPLE_TYPE                  = MSB_UNSIGNED_INTEGER
 SAMPLE_BITS                  = 16
 UNIT                         = METER
 SCALING_FACTOR               = 0.25
 OFFSET                       = -8000
 DESCRIPTION                  = "Each sample represents median
observed topography in units of meters relative to the 3396000 meter
datum at the equator. The topographic datum is an equipotential surface
defined by the Goddard Mars potential model GMM3 (mgm1025) evaluated to
degree and order 50, in the IAU2000 reference frame. To obtain the
observed topography value, apply the above scaling factor and offset:
   TOPOGRAPHY = (STORED VALUE * SCALING_FACTOR) + OFFSET."
END_OBJECT                    = IMAGE

OBJECT                        = IMAGE_MAP_PROJECTION
 ^DATA_SET_MAP_PROJECTION     = "DSMAP_POLAR.CAT"
 MAP_PROJECTION_TYPE          = "POLAR STEREOGRAPHIC"
 A_AXIS_RADIUS                = 3376.2 <KM>
 B_AXIS_RADIUS                = 3376.2 <KM>
 C_AXIS_RADIUS                = 3376.2 <KM>
 FIRST_STANDARD_PARALLEL      = 'N/A'
 SECOND_STANDARD_PARALLEL     = 'N/A'
 POSITIVE_LONGITUDE_DIRECTION = "EAST"
 CENTER_LATITUDE              = 90.0 <DEGREE>
 CENTER_LONGITUDE             = 'N/A'
 REFERENCE_LATITUDE           = 'N/A'
 REFERENCE_LONGITUDE          = 'N/A'
 LINE_FIRST_PIXEL             = 1
 LINE_LAST_PIXEL              = 12288
 SAMPLE_FIRST_PIXEL           = 1
 SAMPLE_LAST_PIXEL            = 12288
 MAP_PROJECTION_ROTATION      = 0.0
 MAP_RESOLUTION               = 512.0 <PIXEL/DEGREE>
 MAP_SCALE                    = 0.115 <KM/PIXEL>
 MAXIMUM_LATITUDE             = 90.00 <DEGREE>
 MINIMUM_LATITUDE             = 73.15 <DEGREE>
 WESTERNMOST_LONGITUDE        = 'N/A'
 EASTERNMOST_LONGITUDE        = 'N/A'
 LINE_PROJECTION_OFFSET       = 'N/A'
 SAMPLE_PROJECTION_OFFSET     = 'N/A'
 COORDINATE_SYSTEM_TYPE       = "BODY-FIXED ROTATING"
 COORDINATE_SYSTEM_NAME       = "PLANETOCENTRIC"
END_OBJECT                    = IMAGE_MAP_PROJECTION
END