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Voyagers to the Outer Planets 4: Saturn
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VoyagerstotheOuterPlanetsVol4.cdr
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Text File
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1989-06-08
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10KB
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267 lines
NJPL1I00PDS100000000 = SFDU_LABEL
/* This label describes the structure of the Index Table on each
/* Voyager Image CD-ROM. The table contains one row for each image
/* file on the CD-ROM. The image index table is formatted so that
/* it may be read directly into many data management systems on
/* various host computers. All fields (columns) are separated by
/* commas, and character fields are enclosed in quotes. Each
/* record consists of 512 bytes, with a carriage return/line feed
/* sequence in bytes 511 and 512. This allows the table to be
/* treated as a fixed length record file on hosts which support this
/* file type and as a normal text file on other hosts.
/*
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 512
RECORDS = 4025
^IMAGE_INDEX_TABLE = 'IMGINDEX.TAB'
OBJECT = IMAGE_INDEX_TABLE
FORMAT = ASCII
ROWS = 4025
ROW_BYTES = 512
ROW_COLUMNS = 22
SPACECRAFT_NAME = {VOYAGER_1, VOYAGER_2}
INSTRUMENT_NAME = {NARROW_ANGLE_CAMERA, WIDE_ANGLE_CAMERA}
MISSION_PHASE_NAME = SATURN_ENCOUNTER
NOTE = "Image Index Table File of Voyager Saturn Image
Information. The ODL object descriptions in this file describe the
data fields in each row of the table."
OBJECT = SPACECRAFT_NAME
TYPE = CHARACTER
START_BYTE = 2
BYTES = 9
FORMAT = A9
NOTE = "Spacecraft name associated with the image.
Valid values are VOYAGER_1 and VOYAGER_2."
END_OBJECT
OBJECT = MISSION_PHASE_NAME
TYPE = CHARACTER
START_BYTE = 14
BYTES = 17
FORMAT = A17
NOTE = "Name of mission phase for this image
(URANUS_ENCOUNTER, JUPITER_ENCOUNTER, SATURN_ENCOUNTER, or
NEPTUNE_ENCOUNTER)."
END_OBJECT
OBJECT = TARGET_NAME
TYPE = CHARACTER
START_BYTE = 34
BYTES = 8
FORMAT = A8
NOTE = "Observational target of the image."
END_OBJECT
OBJECT = IMAGE_ID
TYPE = CHARACTER
START_BYTE = 45
BYTES = 10
FORMAT = A10
NOTE = "Image identification, which takes the form:
nnnnes+ddd, where 'nnnn' = picture sequence number for a given
day, 'e' = planet of encounter (J=Jupiter, S=Saturn, U=Uranus,
N=Neptune), 's' = Voyager spacecraft (1 or 2), - sign indicates
before and a + sign indicates after closest planetary approach.
'ddd' = number of days from closest approach."
END_OBJECT
OBJECT = IMAGE_NUMBER
TYPE = REAL
START_BYTE = 57
BYTES = 8
FORMAT = 'F8.2'
NOTE = "The unique number which identifies this
image. IMAGE_NUMBER is extracted from the Flight Data Subsystem
(FDS) clock count at time of image acquisition. For Voyager
images the number is a seven-digit value, with 5 digits to the
left of the decimal point (the modulo 16-bit (65536) count and 2
digits to the right of the decimal point (the modulo 60 count)."
END_OBJECT
OBJECT = IMAGE_TIME
TYPE = TIME
START_BYTE = 67
BYTES = 20
FORMAT = A20
NOTE = "Time at which image was acquired, in the
format yyyy-mm-ddThh:mm:ssZ. The time system is Universal Time
(UTC). 'yyyy' = year, 'mm' = month, 'dd' = day of month,
'hh' = hour, 'mm' = minute, 'ss' = second."
END_OBJECT
OBJECT = EARTH_RECEIVED_TIME
TYPE = TIME
START_BYTE = 90
BYTES = 20
FORMAT = A20
NOTE = "Time at which image data was received on
earth, in the format yyyy-mm-ddThh:mm:ssZ. The time system is
Universal Time (UTC). 'yyyy' = year, 'mm' = month,
'dd' = day of month, 'hh' = hour, 'mm' = minute, 'ss' = second."
END_OBJECT
OBJECT = INSTRUMENT_NAME
TYPE = CHARACTER
START_BYTE = 113
BYTES = 19
FORMAT = A19
NOTE = "Camera used to acquire the image.
Values are NARROW_ANGLE_CAMERA or WIDE_ANGLE_CAMERA."
END_OBJECT
OBJECT = SCAN_MODE_ID
TYPE = CHARACTER
START_BYTE = 135
BYTES = 7
FORMAT = A7
NOTE = "Scan rate of vidicon read out. Values
can be '1:1', '2:1', '3:1', '5:1', and '10:1'. The instrument scan
rate affects the radiometric properties of the camera because of
the dark current buildup on the vidicon."
END_OBJECT
OBJECT = SHUTTER_MODE_ID
TYPE = CHARACTER
START_BYTE = 145
BYTES = 7
FORMAT = A7
NOTE = "Instrument shutter mode. Permitted values
are:
NAONLY - narrow angle camera shuttered only;
WAONLY - wide angle camera shuttered only;
BOTSIM - both cameras shuttered simultaneously;
BSIMAN - BOTSIM mode followed by NAONLY;
BODARK - shutter remained closed for narrow and wide angle camera;
NADARK - narrow angle read out without shuttering;
WADARK - wide angle read out without shuttering."
END_OBJECT
OBJECT = GAIN_MODE_ID
TYPE = CHARACTER
START_BYTE = 155
BYTES = 7
FORMAT = A7
NOTE = "Gain mode (LOW or HIGH) of the camera."
END_OBJECT
OBJECT = EDIT_MODE_ID
TYPE = CHARACTER
START_BYTE = 165
BYTES = 7
FORMAT = A7
NOTE = "Edit mode of the camera. Values are
'1:1',which indicates the full resolution of the vidicon,
and '3:4', '1:2', '1:3', '1:5', and '1:10' for partial resolution
images. Indicates amount of data read from the vidicon."
END_OBJECT
OBJECT = FILTER_NAME
TYPE = CHARACTER
START_BYTE = 175
BYTES = 7
FORMAT = A7
NOTE = "Optical filter used for the image.
Permitted values are CLEAR, CH4_U, CH4_JS, UV, VIOLET, BLUE,
GREEN, ORANGE, and NAD."
END_OBJECT
OBJECT = FILTER_NUMBER
TYPE = INTEGER
START_BYTE = 184
BYTES = 4
FORMAT = I4
NOTE = "Optical filter number, contains the unique
number associated with the optical filter for the image. Needed to
differentiate between the two CLEAR filters on the Voyager narrow
angle camera."
END_OBJECT
OBJECT = EXPOSURE_DURATION
TYPE = REAL
START_BYTE = 189
BYTES = 7
FORMAT = 'F7.4'
NOTE = "Exposure duration for the image, in seconds."
END_OBJECT
OBJECT = NOTE
TYPE = CHARACTER
START_BYTE = 198
BYTES = 80
FORMAT = A80
NOTE = "Observational intent of the image."
END_OBJECT
OBJECT = SAMPLE_BIT_MASK
TYPE = CHARACTER
START_BYTE = 281
BYTES = 8
FORMAT = A8
NOTE = "A string of binary digits showing which
bits are active in the sample value, values are 11111111 when all
bits are active, and 11111110 when the least significant bit
does not contain valid data."
END_OBJECT
OBJECT = DATA_ANOMALY_TYPE
TYPE = CHARACTER
START_BYTE = 292
BYTES = 6
FORMAT = A6
NOTE = "A text field which identifies anomalies
associated with an image. A value of NONE indicates that no
anomalies were detected. A value of RAMCOR indicates that
spurious values exist in the image data due to corruption of
the random access memory onboard the spacecraft. Note that
the DATA_ANOMALY_TYPE keyword is not present in the labels of
images for which no anomalies were detected, and has a value
of RAM_DATA_CORRUPTION if the image was corrupted."
END_OBJECT
OBJECT = IMAGE_VOLUME_ID
TYPE = CHARACTER
START_BYTE = 301
BYTES = 8
FORMAT = A8
NOTE = "CD-ROM volume on which the image file is
recorded (VG_0001, etc.)."
END_OBJECT
OBJECT = IMAGE_FILE_NAME
TYPE = CHARACTER
START_BYTE = 312
BYTES = 31
FORMAT = A31
NOTE = "Fully qualified CD-ROM file name for the
image file. Recorded in VAX directory format, with brackets
indicating the directory heirarchy. Users on other systems will
need to convert the directory names to other operating system
formats."
END_OBJECT
OBJECT = BROWSE_VOLUME_ID
TYPE = CHARACTER
START_BYTE = 346
BYTES = 8
FORMAT = A8
NOTE = "CD-ROM volume on which the browse version of
the image file is recorded (VG_0005, etc)."
END_OBJECT
OBJECT = BROWSE_FILE_NAME
TYPE = CHARACTER
START_BYTE = 357
BYTES = 38
FORMAT = A38
NOTE = "Fully qualified CD-ROM file name for the
browse version of the image file. Recorded in VAX directory format,
with brackets indicating the directory heirarchy. Users on other
systems will need to convert the directory names to other operating
system formats."
END_OBJECT
END_OBJECT = IMAGE_INDEX_TABLE
END