CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 412 FILE_RECORDS = 3412 ^TABLE = "IMGINDEX.TAB" OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 3412 COLUMNS = 27 ROW_BYTES = 412 DATA_SET_ID = "VO1/VO2-M-VIS-5-DIM-V1.0" SPACECRAFT_NAME = {VIKING_ORBITER_1,VIKING_ORBITER_2} INSTRUMENT_NAME = {VISUAL_IMAGING_SUBSYSTEM_CAMERA_A, VISUAL_IMAGING_SUBSYSTEM_CAMERA_B} NOTE = "Image Index Table containing Mars Color Mosaicked Digital Image Model at a resolution of 1/64-th degree/pixel. 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 CD-ROM volumes 8-13. 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 double quotation marks. Each record consists of 412 bytes, with a carriage return/line feed sequence in bytes 411 and 412. 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 = FILE_NAME DATA_TYPE = CHARACTER START_BYTE = 2 BYTES = 42 FORMAT = "A42" DESCRIPTION = "The fully qualified CD-ROM file name for the image file. The format of the directory name specification is the VAX/VMS directory format, with brackets indicating the directory hierarchy. Users on other systems will need to convert the directory names to the operating system formats." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MAXIMUM_LATITUDE DATA_TYPE = REAL START_BYTE = 46 BYTES = 10 FORMAT = "F10.5" DESCRIPTION = "Maximum latitude in the image array." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MINIMUM_LATITUDE DATA_TYPE = REAL START_BYTE = 57 BYTES = 10 FORMAT = "F10.5" DESCRIPTION = "Minimum latitude in the image array." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MAXIMUM_LONGITUDE DATA_TYPE = REAL START_BYTE = 68 BYTES = 11 FORMAT = "F11.5" DESCRIPTION = "Maximum longitude in the image array." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MINIMUM_LONGITUDE DATA_TYPE = REAL START_BYTE = 80 BYTES = 11 FORMAT = "F11.5" DESCRIPTION = "Minimum longitude in the image array." END_OBJECT = COLUMN OBJECT = COLUMN NAME = CENTER_LONGITUDE DATA_TYPE = REAL START_BYTE = 92 BYTES = 11 FORMAT = "F11.5" DESCRIPTION = "Central Longitude value used of the image file, used in the Sinusodial equal-area projection." END_OBJECT = COLUMN OBJECT = COLUMN NAME = LINES DATA_TYPE = INTEGER START_BYTE = 104 BYTES = 5 FORMAT = "I5" DESCRIPTION = "Number of lines in the image array. This parameter specifies the number of elements of the slowest varying dimension of the two dimensional image array." END_OBJECT = COLUMN OBJECT = COLUMN NAME = LINE_SAMPLES DATA_TYPE = INTEGER START_BYTE = 110 BYTES = 5 FORMAT = "I5" DESCRIPTION = "Number of samples in the image array. This parameter specifies the number of elements of the fastest varying dimension of the two dimensional image array." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MAP_RESOLUTION DATA_TYPE = REAL START_BYTE = 116 BYTES = 4 FORMAT = "F4.0" DESCRIPTION = "Number of pixels per degree at the equator." END_OBJECT = COLUMN OBJECT = COLUMN NAME = VOLUME_ID DATA_TYPE = CHARACTER START_BYTE = 122 BYTES = 7 FORMAT = "A7" DESCRIPTION = "List of CD-ROM volume number on which the DTM image file is recorded." END_OBJECT = COLUMN OBJECT = COLUMN NAME = X_AXIS_PROJECTION_OFFSET DATA_TYPE = REAL START_BYTE = 131 BYTES = 11 FORMAT = "F11.3" DESCRIPTION = "Line position of line 1.0, sample 1.0 in the x,y coordinates relative to the origin of the map projection." END_OBJECT = COLUMN OBJECT = COLUMN NAME = Y_AXIS_PROJECTION_OFFSET DATA_TYPE = REAL START_BYTE = 143 BYTES = 11 FORMAT = "F11.3" DESCRIPTION = "Sample position of line 1.0, sample 1.0 in the x,y coordinates relative to the origin of the map projection." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NOTE DATA_TYPE = CHARACTER START_BYTE = 156 BYTES = 76 FORMAT = "A76" DESCRIPTION = "Brief description of the image file." END_OBJECT = COLUMN OBJECT = COLUMN NAME = IMAGE_ID DATA_TYPE = CHARACTER START_BYTE = 235 BYTES = 17 FORMAT = "A17" DESCRIPTION = "The image identifier is a 17 character string to identify the image file. The first letter specifies the data type (M=MDIM image, T=DTM image, S=Shaded Relief image). The second letter specifies the resolution of the image (A=1/1 deg/pixel, B=1/2, C=1/4, D=1/8, E=1/16, F=1/32, G=1/64, H=1/128, I=1/256, etc.). Character positions three and four specifies the center latitude of the image rounded down to the nearest whole integer. Character position five specifies N for north latitude and S for south latitude. Character positions six through eight specifies the center longitude of the image rounded down to the nearest whole integer. The 9-th position contains the character '-', positions 10-12 specifies the color, position 13 contins the character '-', and positions 14-17 contains the first four characters of the image ids that were used to make the color mosaic." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MAP_SCALE DATA_TYPE = REAL START_BYTE = 254 BYTES = 11 FORMAT = "F11.6" DESCRIPTION = "Number of kilometers per pixel at the equator " END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_NAME DATA_TYPE = CHARACTER START_BYTE = 267 BYTES = 16 FORMAT = "A16" DESCRIPTION = "Name of spacecraft that acquired the imaging: VIKING_ORBITER_1 or VIKING_ORBITER_2 " END_OBJECT = COLUMN OBJECT = COLUMN NAME = IMAGE_TIME DATA_TYPE = CHARACTER START_BYTE = 286 BYTES = 19 FORMAT = "A19" DESCRIPTION = "Year, Month, Day, hour of when the images in the MDIM were acquired." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ORBIT_NUMBER DATA_TYPE = INTEGER START_BYTE = 307 BYTES = 5 FORMAT = "I5" DESCRIPTION = "Orbit number of when imaging was acquired" END_OBJECT = COLUMN OBJECT = COLUMN NAME = FILTER_NAME DATA_TYPE = CHARACTER START_BYTE = 314 BYTES = 15 FORMAT = "A15" DESCRIPTION = "Color filter used when acquiring image." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GEOMETRY_SOURCE_IMAGE_ID DATA_TYPE = CHARACTER START_BYTE = 332 BYTES = 6 FORMAT = "A6" DESCRIPTION = "Image ID of image used to specify the viewing geometry of the mosaic. The viewing geometry of this image was used to define the emission, phase, and incidence angles of the sun rays." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EMISSION_ANGLE DATA_TYPE = REAL START_BYTE = 340 BYTES = 8 FORMAT = "F8.3" DESCRIPTION = "Value of the angle between the surface normal vector at the intercept point and a vector from the intercept point to the spacecraft. The center of the tile is used as the intercept point." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INCIDENCE_ANGLE DATA_TYPE = REAL START_BYTE = 349 BYTES = 8 FORMAT = "F8.3" DESCRIPTION = "Value of the angle of the lighting condition at the intercept point. The center of the tile is used as the intercept point." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PHASE_ANGLE DATA_TYPE = REAL START_BYTE = 358 BYTES = 8 FORMAT = "F8.3" DESCRIPTION = "Angle between the spacecraft viewing position and incident solar light. It is the angle between a vector from the intercept point to the sun and a vector from the intercept point to the spacecraft. The center of the tile is used as the intercept point." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SCALING_FACTOR DATA_TYPE = REAL START_BYTE = 367 BYTES = 9 FORMAT = "F9.6" DESCRIPTION = "Multiplicative factor to convert DN value to I/F value. I/F is the ratio of the observed radiance and the radiance of a white screen, normal to the incidence rays of the sun. I/F=1.0, for an ideal 100% lambertion reflector with the sun and camera orthoganal to the planet surface." END_OBJECT = COLUMN OBJECT = COLUMN NAME = OFFSET DATA_TYPE = REAL START_BYTE = 377 BYTES = 9 FORMAT = "F9.6" DESCRIPTION = "Additive factor to convert DN value to I/F value." END_OBJECT = COLUMN OBJECT = COLUMN NAME = STRETCH_MINIMUM DATA_TYPE = INTEGER ITEMS = 2 ITEM_OFFSET = 6 START_BYTE = 387 BYTES = 5 FORMAT = "I5" DESCRIPTION = "The stretch minimum is a two value parameter used to define the low-end DN stretch to apply to the image for creating ideal color. For example, 27, 0 specifies the stretch of 27 mapped to zero." END_OBJECT = COLUMN OBJECT = COLUMN NAME = STRETCH_MAXIMUM DATA_TYPE = INTEGER ITEMS = 2 ITEM_OFFSET = 6 START_BYTE = 399 BYTES = 5 FORMAT = "I5" DESCRIPTION = "The stretch maximum is a two value parameter used to define the high-end DN stretch to apply to the image for creating ideal color. For example, 230, 255 specifies the stretch of 230 mapped to 255." END_OBJECT = COLUMN END_OBJECT = TABLE END