CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 512 FILE_RECORDS = 22284 ^TABLE = 'CUMINDEX.TAB' OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 22284 COLUMNS = 19 DATA_SET_ID = "VO1/VO2-M-VIS-2-EDR-V2.0" SPACECRAFT_NAME = {VIKING_ORBITER_1,VIKING_ORBITER_2} INSTRUMENT_NAME = {VISUAL_IMAGING_SUBSYSTEM_CAMERA_A, VISUAL_IMAGING_SUBSYSTEM_CAMERA_B} NOTE = "Cumulative Index Table containing Viking Orbiter image information. The ODL object descriptions in this file describe the data fields in each row of the table. The table contains one row for each image file on all of the CD-ROMs in the Viking Orbiter image series so far. The cumulative 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 double quotation marks. 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 that support this file type and as a normal text file on other hosts." OBJECT = COLUMN NAME = IMAGE_ID DATA_TYPE = CHARACTER START_BYTE = 2 BYTES = 8 FORMAT = A8 DESCRIPTION = "The image identifier is a six-character string to identify a Viking Orbiter image. The first three characters represent the orbit number. The fourth character is either an A for Viking Orbiter 1, a B for Viking Orbiter 2, or an S for the Viking Orbiter 1 Survey Mission. The letters C and D is used for images acquired by Viking Orbiter 1 and 2, respectively, before orbit insertion. The letter X is used for Viking Orbiter 1 images when more than 100 images were taken in one orbit. The last two characters represent the sequence number of the image within that orbit." END_OBJECT = COLUMN OBJECT = COLUMN NAME = IMAGE_NUMBER DATA_TYPE = INTEGER START_BYTE = 12 BYTES = 8 FORMAT = I8 DESCRIPTION = "The image number is a value derived from the spacecraft clock start count. It is also known as the FSC (frame start count), and is a commonly used identifier for a Viking Orbiter image." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_NAME DATA_TYPE = CHARACTER START_BYTE = 22 BYTES = 16 FORMAT = A16 DESCRIPTION = "The spacecraft name identifies the spacecraft that acquired the image." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MISSION_PHASE_NAME DATA_TYPE = CHARACTER START_BYTE = 41 BYTES = 32 FORMAT = A32 DESCRIPTION = "The name of mission phase during which the image was acquired." END_OBJECT = COLUMN OBJECT = COLUMN NAME = TARGET_NAME DATA_TYPE = CHARACTER START_BYTE = 76 BYTES = 8 FORMAT = A8 DESCRIPTION = "Observational target of the image." END_OBJECT = COLUMN OBJECT = COLUMN NAME = IMAGE_TIME DATA_TYPE = TIME START_BYTE = 87 BYTES = 20 FORMAT = A20 DESCRIPTION = "The time when the image was acquired, in the format yyyy-mm-ddThh:mm:ssZ. 'yyyy' = year, 'mm' = month, 'dd' = day of month, 'hh' = hour, 'mm' = minute, 'ss' = second. The time system is Universal Time (UTC)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EARTH_RECEIVED_TIME DATA_TYPE = TIME START_BYTE = 110 BYTES = 20 FORMAT = A20 DESCRIPTION = "The time that image data was first 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 = COLUMN OBJECT = COLUMN NAME = ORBIT_NUMBER DATA_TYPE = INTEGER START_BYTE = 132 BYTES = 8 FORMAT = I8 DESCRIPTION = "The number of orbits that the spacecraft has made since orbit insertion." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INSTRUMENT_NAME DATA_TYPE = CHARACTER START_BYTE = 142 BYTES = 34 FORMAT = A34 DESCRIPTION = "The name of the VIS camera used to acquire the image. Valid values are VISUAL_IMAGING_SUBSYSTEM_CAMERA_A, VISUAL_IMAGING_SUBSYSTEM_CAMERA_B." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GAIN_MODE_ID DATA_TYPE = CHARACTER START_BYTE = 179 BYTES = 8 FORMAT = A8 DESCRIPTION = "The gain state used to acquire the image. Valid values are LOW and HIGH." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FLOOD_MODE_ID DATA_TYPE = CHARACTER START_BYTE = 190 BYTES = 8 FORMAT = A8 DESCRIPTION = "The flood state used to acquire the image. Valid values are ON and OFF." END_OBJECT = COLUMN OBJECT = COLUMN NAME = OFFSET_MODE_ID DATA_TYPE = CHARACTER START_BYTE = 201 BYTES = 8 FORMAT = A8 DESCRIPTION = "The offset state used to acquire the image. Valid values are ON and OFF." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FILTER_NAME DATA_TYPE = CHARACTER START_BYTE = 212 BYTES = 10 FORMAT = A10 DESCRIPTION = "The optical filter used to acquire the image. Valid values are BLUE, MINUS_BLUE, VIOLET, CLEAR, GREEN, and RED." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EXPOSURE_DURATION DATA_TYPE = REAL START_BYTE = 224 BYTES = 8 FORMAT = 'F8.6' DESCRIPTION = "The exposure duration used when acquiring the image. Values are given in units of seconds." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NOTE DATA_TYPE = CHARACTER START_BYTE = 234 BYTES = 160 FORMAT = A160 DESCRIPTION = "The reason for acquiring the image. Values are derived from records kept by the Visual Imaging Subsystem team. Some of the commonly used terms in the NOTE field are as follows. MAPPING SEQUENCE means contiguous coverage of a given region. GROUND TRACK SEQUENCE means images taken along the spacecraft ground track near periapsis where ground velocity was high. Images in these ground track sequences may not overlap with each other. MONITORING SEQUENCE means observations of regions or features for temporal changes. SURVEY SEQUENCE means low resolution images acquired near apoapsis that show a large portion of the planet. TARGETS OF OPPORTUNITY means regions or features observed with special conditions (e.g. lighting and viewing); for example, sunrise over the Tharsis volcanoes. EMISSION PHASE FUNCTION SEQUENCE means viewing a single area at multiple emission angles for photometric studies. Resolutions are based on the following approximate divisions by pixel size: very high resolution - less then 20 meters per pixel; high resolution - 20 to 75 meters per pixel; medium resolution - 75 to 250 meters per pixel; and low resolution - greater than 250 meters per pixel." END_OBJECT = COLUMN OBJECT = COLUMN NAME = IMAGE_VOLUME_ID DATA_TYPE = CHARACTER START_BYTE = 397 BYTES = 8 FORMAT = A8 DESCRIPTION = "The CD-ROM volume on which the image file is recorded (VO_1001, etc.)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = IMAGE_FILE_NAME DATA_TYPE = CHARACTER START_BYTE = 408 BYTES = 28 FORMAT = A28 DESCRIPTION = "The fully qualified CD-ROM file name for the image file. The format of the directory is the VAX/VMS directory format, with brackets indicating the directory hierarchy. Users on other systems will need to convert the directory names to other operating system formats." END_OBJECT = COLUMN OBJECT = COLUMN NAME = BROWSE_VOLUME_ID DATA_TYPE = CHARACTER START_BYTE = 439 BYTES = 8 FORMAT = A8 DESCRIPTION = "The CD-ROM volume on which the browse version of the image file is recorded (VO_1001, etc)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = BROWSE_FILE_NAME DATA_TYPE = CHARACTER START_BYTE = 450 BYTES = 28 FORMAT = A28 DESCRIPTION = "The fully qualified CD-ROM file name for the browse version of the image file. The format of the directory is the VAX/VMS directory format, with brackets indicating the directory hierarchy. Users on other systems will need to convert the directory names to other operating system formats." END_OBJECT = COLUMN END_OBJECT = TABLE END