PDS_VERSION_ID = PDS3 /*** FILE FORMAT ***/ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 2880 FILE_RECORDS = 1486 /*** POINTERS TO OBJECTS IN FILE ***/ ^FITS_HEADER = ("n1058we02r.fit",1) ^IMAGE = ("n1058we02r.fit",2) /*** GENERAL DATA DESCRIPTION PARAMETERS ***/ MISSION_NAME = "STARDUST" DATA_SET_ID = "SDU-C-NAVCAM-3-RDR-WILD2-V2.0" PRODUCT_ID = "N1058WE01R.FIT" SOURCE_PRODUCT_ID = "N1058WE01.FIT" PRODUCER_INSTITUTION_NAME = "U.S.G.S. FLAGSTAFF" PRODUCT_TYPE = "RDR" SOFTWARE_NAME = "ISIS 2.3" MISSION_PHASE_NAME = "WILD 2 ENCOUNTER" TARGET_NAME = "81P/WILD 2 (1978 A2)" FRAME_SEQUENCE_NUMBER = 1058 /*** TIME PARAMETERS ***/ PRODUCT_CREATION_TIME = 2009-08-25T12:37:49 START_TIME = 2003-12-31T20:23:14.505 STOP_TIME = 2003-12-31T20:23:24.505 SPACECRAFT_CLOCK_START_COUNT = "0757369635:009" SPACECRAFT_CLOCK_STOP_COUNT = "0757369645:009" TIME_FROM_CLOSEST_APPROACH = -1.957146 /*** CAMERA RELATED PARAMETERS ***/ INSTRUMENT_NAME = "NAVIGATION CAMERA" INSTRUMENT_HOST_NAME = "STARDUST" INSTRUMENT_ID = "NAVCAM" DATA_STREAM_TYPE = "CRUISE" EXPOSURE_DURATION = 10000.0000 LIGHT_FLOOD_STATE_FLAG = "OFF" FILTER_NUMBER = 0 FILTER_NAME = "OPNAV" CENTER_FILTER_WAVELENGTH = 698.8 /*** SCAN MIRROR ANGLE AND RATE ***/ SCAN_MIRROR_ANGLE = 24.49219 SCAN_MIRROR_RATE = 0.00000 /*** TEMPERATURE PARAMETERS IN ***/ FOCAL_PLANE_TEMPERATURE = 237.75 SCAN_MIRROR_TEMPERATURE = 268.54 NOTE = " Earth Mean Equator and Vernal Equinox of J2000 is the inertial reference system used to specify observational geometry. Geometric parameters are based on best available data at time of product creation. Refer to the SPICE archive for the most current observational geometry data." /*** LINE-OF-SITE ON CELESTIAL SPHERE: ANGLES IN ***/ RIGHT_ASCENSION = 158.5863 DECLINATION = 5.8182 TWIST_ANGLE = 45.9974 TWIST_ANGLE_TYPE = DEFAULT RETICLE_POINT_RA = ( 158.6295, 161.0744, 158.5428, 156.0986 ) RETICLE_POINT_DECLINATION = ( 3.3431, 5.8558, 8.2933, 5.7697 ) /*** SMEAR MAGNITUDE AND DIRECTION ***/ SMEAR_MAGNITUDE = 1.473 SMEAR_AZIMUTH = 130.5030 /*** TARGET AND SUN POSITIONS AND VELOCITIES ***/ SC_TARGET_POSITION_VECTOR = ( -963696.5, 363308.4, 101533.8 ) SC_TARGET_VELOCITY_VECTOR = ( 5.696100, -2.148300, -0.601100 ) TARGET_CENTER_DISTANCE = 1034897.6 SOLAR_DISTANCE = 276771016.2 SPACECRAFT_SOLAR_DISTANCE = 276461845.4 SC_SUN_POSITION_VECTOR = ( 172581377.2, 203856253.9, 71340367.2 ) SC_SUN_VELOCITY_VECTOR = ( -8.748200, 18.357800, 7.919200 ) /*** PIXEL SCALES ***/ HORIZONTAL_PIXEL_SCALE = 61752.340 VERTICAL_PIXEL_SCALE = 61752.340 /*** VIEWING AND LIGHTING GEOMETRY (SUN ON TARGET) ***/ PHASE_ANGLE = 72.509 /*** DESCRIPTION OF OBJECTS CONTAINED IN FILE ***/ OBJECT = FITS_HEADER HEADER_TYPE = "FITS" BYTES = 2880 RECORDS = 1 END_OBJECT = FITS_HEADER OBJECT = IMAGE LINES = 1024 LINE_SAMPLES = 1022 AXIS_ORDER_TYPE = "FIRST_INDEX_FASTEST" UNIT = "W/m^2/sR" SAMPLE_TYPE = IEEE_REAL SAMPLE_BITS = 32 MISSING_CONSTANT = 0.00 SAMPLE_DISPLAY_DIRECTION = "RIGHT" LINE_DISPLAY_DIRECTION = "UP" DESCRIPTION = "This image was acquired in a windowed mode, so that data are available only for the downlinked areas of the focal plane. Pixels for which no data values were available have been assigned the value described by the MISSING_CONSTANT. A description of the downlinked window areas is included in the labels of the corresponding EDR file, but note that the RDR has been transposed (rows and columns exchanged) relative to the EDR geometry. This image has been radiometrically calibrated to give radiance in units of W m**-2 sR**-1. Processing can be summarized as consisting of five steps: 1) undo square-root compression of raw data numbers; 2) because Baseline Stabilization pixel values were not available in the prefix/suffix of this windowed image, the step of subtracting an estimated image bias from all pixels has been skipped (subtraction of a representative dark sky data value is an option available to users of the data); 3) divide by estimate of relative sensitivity of each pixel compared to image center pixels; 4) scale from data number to radiance based on exposure time, distance from Sun, and absolute calibration coefficient derived from analysis of post-encounter star images; 5) geometrically transpose image data (not including line prefix and suffix regions), resulting in a right-reading (unmirrored) view of the sky from the spacecraft such as would have been obtained by a conventional camera without periscope; and 6) update values of geometric parameters to correspond to the transposed image geometry. Windows are located at pixels: WINDOW1 = [308:598,505:795] WINDOW2 = [462:752,99:389] WINDOW3 = [428:718,501:791] " END_OBJECT = IMAGE END