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