CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL PDS_VERSION_ID = PDS3 LABEL_REVISION_NOTE = "2004-01-28; J. Diaz del Rio (ESA). v1.0" /* File Format and Length */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 824 FILE_RECORDS = 336 FILE_NAME = "HMC01364.IMG" LABEL_RECORDS = "N/A" DATA_SET_PARAMETER_NAME = "DATA NUMBER" DATA_SET_ID = "GIO-C-HMC-3-RDR-HALLEY-V1.0" DATA_SET_NAME = "GIOTTO HALLEY MULTICOLOR CAMERA IMAGES V1.0" PRODUCT_ID ="HMC01364" PRODUCT_TYPE ="RDR" PRODUCT_CREATION_TIME = 1993-12-31 PRODUCER_ID = "N/A" PRODUCER_FULL_NAME = "INTERNATIONAL HALLEY WATCH" PRODUCER_INSTITUTION_NAME = "GODDARD SPACE FLIGHT CENTER" MISSION_NAME = "GIOTTO" MISSION_PHASE_NAME = "HALLEY ENCOUNTER" MISSION_ID = "GIOTTO" INSTRUMENT_HOST_ID = "GIO" INSTRUMENT_HOST_NAME = "GIOTTO" INSTRUMENT_NAME = "HALLEY MULTICOLOUR CAMERA" INSTRUMENT_ID = "HMC" OBSERVATION_ID = "042884" TARGET_NAME = "HALLEY" TARGET_TYPE = "COMET" OBSERVATION_TIME = 1986-03-13T23:21:20.797Z START_TIME = 1986-03-13T23:21:20.797Z STOP_TIME = 1986-03-13T23:21:20.797Z SPACECRAFT_CLOCK_START_COUNT = "UNK" SPACECRAFT_CLOCK_STOP_COUNT = "UNK" ORBIT_NUMBER = "N/A" INSTRUMENT_TYPE = "LINEAR ARRAY CAMERA" INSTRUMENT_MODE_ID = "SDM" INSTRUMENT_MODE_DESC = " Single Detector Mode, or Coma Mode, was used for most observations far from the time of closest approach when the annular field of view swept out by the detectors had such a small radius of curvature that the motion of the field could be orthogonal to only one of the linear detectors. Detector C was used to locate the center of brightness which was then fed back, once every second spin of the spacecraft, to the controlling electronics. These then adjusted the periscopic mirror to make the motion orthogonal to detector C and adjusted the clocking rate of the detector to match the motion of the field of view. A sub-mode of this mode, known as 'Photometer Mode', involved stopping the clocking of the CCD so that it integrated across the entire coma." DATA_QUALITY_ID = "N/A" DATA_QUALITY_DESC = "N/A" PROCESSING_LEVEL_ID = 3 PROCESSING_LEVEL_DESC = "Calibrated data that are still in units produced by instrument, but that have been corrected so that values are expressed in or are proportional to some physical unit such as radiance. No resampling, so edited data can be reconstructed. NASA Level 1A" DETECTOR_ID = "C" DETECTOR_TYPE = "CCD" DETECTOR_DESC = " Detector type : CCD Minimum Wavelength : 0.30 Maximum Wavelength : 1.05 Nominal Operating Temperature : 253. This detector is one of two windows in the mask on CCD number 1. The CCD is a virtual-phase device by Texas Instruments with two independent sections of 390 by 292 pixels and the two windows are at the 'leading' edge of each section. Pixel size is 22.35 microns square. The window in the mask is the full width of 390 pixels by several pixels and the clocking is varied to synchronize with the apparent motion of the image across the detector window. The output is thus a line of 390 pixels for each of many different positions in the image. This window views through the filter wheel containing a series of polarizers and narrow-band filters. It is the second of the four imaging detectors to 'see' an object as the field of view of the telescope sweeps across the sky. Sensitivity Description: See response curve for CCD given in Schmidt et al. (1986), Figure 9 and the reflectivity of the mirror given in Figure 7 of the same reference. See also the characteristics of Filters Cn in the appropriate templates or in Table I of the same reference." /* Record Pointer to Object */ ^IMAGE = "HMC01364.IMG" /* Description of Object in File */ OBJECT = IMAGE LINES = 336 LINE_SAMPLES = 412 SAMPLE_TYPE = MSB_INTEGER SAMPLE_BITS = 16 DESCRIPTION = "HMC IMAGE" OFFSET = 0.000000E+00 SCALING_FACTOR = 1.000000E+00 END_OBJECT = IMAGE END