Mercury Globe 30x in 500,000 Facets by GlobeMaker

Last crawled date: 2 years, 12 months ago

Mercury had half of its surface measured by the Messenger spacecraft. The 30x exaggeration factor reveals vast depression, similar to the Moon Globe 30x.
PDS_VERSION_ID = "PDS3"
/ GENERAL DATA DESCRIPTION PARAMETERS /
PRODUCT_VERSION_ID = "V1"
DATA_SET_ID = "MESS-E/V/H-MLA-4-GDR-V1.0"
PRODUCT_ID = "HDEM_2"
STANDARD_DATA_PRODUCT_ID = "MLASCIENCEGDR"
INSTRUMENT_HOST_NAME = "MESSENGER"
INSTRUMENT_NAME = "MERCURY LASER ALTIMETER"
INSTRUMENT_ID = "MLA"
MISSION_PHASE_NAME = {"MERCURY 1 FLYBY","MERCURY 2 FLYBY",
"MERCURY ORBIT","MERCURY ORBIT YEAR 2"}
TARGET_NAME = MERCURY
START_TIME = 2008-01-14
STOP_TIME = 2012-09-17
PRODUCT_CREATION_TIME = 2012-10-31
PRODUCT_RELEASE_DATE = 2013-03-08
PRODUCER_ID = MESSENGER_MLA_TEAM
PRODUCER_FULL_NAME = "DAVID E. SMITH"
PRODUCER_INSTITUTION_NAME = "NASA/GODDARD SPACE FLIGHT CENTER"
DESCRIPTION = "This data product is a shape map (radius)
of Mercury at a resolution of 21.293 km/pix by 21.293 km/pix,
based on altimetry data acquired through the Mapping Phase
by the MLA instrument. The preliminary MLA data are the source for
this data set. The ground tracks were interpolated using the Generic
Mapping Tools programs 'surface' and 'grdblend'. The map is in
the form of a binary table with one row for each
0.5 degrees of latitude, pixel registered. Map values
are relative to a radius of 2440 km.
This label describes an IMG file in the form of a binary resampling
to pixel registration.
"
OBJECT = UNCOMPRESSED_FILE
FILE_NAME = "HDEM_2.IMG"
RECORD_TYPE = FIXED_LENGTH
FILE_RECORDS = 720
RECORD_BYTES = 1440
^IMAGE = "HDEM_2.IMG"
OBJECT = IMAGE
NAME = HEIGHT
DESCRIPTION = "Each sample represents height relative to a
reference radius (OFFSET) and is generated using preliminary MLA data
produced by the MLA team."
LINES = 360
LINE_SAMPLES = 720
SAMPLE_TYPE = LSB_INTEGER
SAMPLE_BITS = 16
UNIT = METER
SCALING_FACTOR = 0.5
OFFSET = 2440000
END_OBJECT = IMAGE
/ Conversion from Digital Number to HEIGHT, i.e. elevation in meters, is: /
/ HEIGHT = (DN SCALING_FACTOR). /
/ The conversion from Digital Number to PLANETARY_RADIUS in meters is: /
/ PLANETARY_RADIUS = (DN SCALING_FACTOR) + OFFSET /
END_OBJECT = UNCOMPRESSED_FILE
OBJECT = IMAGE_MAP_PROJECTION
^DATA_SET_MAP_PROJECTION = "DSMAP.CAT"
MAP_PROJECTION_TYPE = "SIMPLE CYLINDRICAL"
MAP_RESOLUTION = 2
A_AXIS_RADIUS = 2440.
B_AXIS_RADIUS = 2440.
Thank you, Planetary Data System (PDS)
Alan Folmsbee, Globemaker