CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 130 FILE_RECORDS = 181 ^TABLE = "OBSCAT.TAB" DATA_SET_ID = {"GO-E/L-NIMS-2-EDR-V1.0", "GO-V-NIMS-2-EDR-V1.0"} SPACECRAFT_NAME = GALILEO_ORBITER INSTRUMENT_NAME = "NEAR_INFRARED_MAPPING_SPECTROMETER" INSTRUMENT_ID = NIMS OBJECT = TABLE NAME = OBSERVATION_CATALOG INTERCHANGE_FORMAT = ASCII ROWS = 181 COLUMNS = 21 ROW_BYTES = 130 DESCRIPTION = "Observation table for Galileo scan platform observations which include NIMS data. It was prepared by automatic extraction (plus some hand editing) of material from the Galileo Spacecraft Event File (SEF) and is used by ISIS NIMS cube generation software to determine attributes of the observations. Note that this table describes PLANNED observations, and does not necessarily describe data returned from the spacecraft." OBJECT = COLUMN NAME = OAPEL_ID DATA_TYPE = CHARACTER START_BYTE = 1 BYTES = 12 FORMAT = "A12" DESCRIPTION = "The Orbital Activity Profile ELement ID identifies a single planned observation. It is popularly known as the OAPEL name." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SEGMENT_ID DATA_TYPE = CHARACTER START_BYTE = 14 BYTES = 1 FORMAT = "A1" DESCRIPTION = "The segment ID identifies a part of an observation which has been separated for processing convenience. (Parts of observations in different instrument modes are usually processed separately.) Ordered segments within an observation are usually represented by alphabetic characters in order, beginning with 'A'." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PROFILE_ACTIVITY_ID DATA_TYPE = CHARACTER START_BYTE = 16 BYTES = 4 FORMAT = "A4" DESCRIPTION = "The profile activity ID identifies the type of scan platform activity of the observation segment. Only the first 4 characters of each identifier are used in the table: ALSPINSP All Spin Scan Platform Control\n CMDRS Instrument Command (Remote Sensing)\n CSMOS Continuous Slew Mosaic\n INITRS Instrument Initialization (Remote Sensing)\n PCINIT Photocalibration Initialization\n PCREST Photocalibration Restore (termination)\n RADHTR NIMS Radiometric Heater Control\n SCIREC Science Record\n SCITLM Science Telemetry\n SMOS Start/Stop Slew Mosaic\n TARGET Target (Scan Platform Positioning)\n SSI Solid State Imaging (SSI) Command\n UTIL Utility, such as instrument checkout" END_OBJECT = COLUMN OBJECT = COLUMN NAME = NATIVE_START_TIME DATA_TYPE = CHARACTER START_BYTE = 21 BYTES = 11 FORMAT = "A11" DESCRIPTION = "The spacecraft clock count that indicates the beginning of the planned observation segment." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NATIVE_STOP_TIME DATA_TYPE = CHARACTER START_BYTE = 33 BYTES = 11 FORMAT = "A11" DESCRIPTION = "The spacecraft clock count that indicates the end of the planned observation segment." END_OBJECT = COLUMN OBJECT = COLUMN NAME = INSTRUMENT_MODE_NUMBER DATA_TYPE = INTEGER START_BYTE = 45 BYTES = 2 FORMAT = "I2" DESCRIPTION = "A number (0-15) which identifies the NIMS instrument mode during the observation segment:\n 0 Safe (fixed spectrometer)\n 1 Full map\n 2 Full spectrometer\n 3 Long map\n 4 Long spectrometer\n 5 Short map\n 6 Short spectrometer\n 7 Fixed map\n 8 Bandedge map\n 9 Bandedge spectrometer\n 10 Stop and slide map\n 11 Stop and slide spectrometer\n 12-15 Special sequences (programmable) In some calibration observations, the mode changes periodically. In such cases, the instrument mode shown is the INITIAL mode." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GAIN_MODE_NUMBER DATA_TYPE = INTEGER START_BYTE = 49 BYTES = 1 FORMAT = "I1" DESCRIPTION = "A number which identifies the gain state (1-4) of the NIMS instrument during the observation segment. These states vary roughly from low gain (1) to high gain (4) and apply to the non-thermal detectors (1-14) only." END_OBJECT = COLUMN OBJECT = COLUMN NAME = CHOPPER_MODE_NUMBER DATA_TYPE = INTEGER START_BYTE = 52 BYTES = 1 FORMAT = "I1" DESCRIPTION = "A number which identifies the chopper mode of the NIMS instrument during the observation segment:\n 1 Reference mode\n 2 63-hertz mode\n 3 Free-run\n 4 Off" END_OBJECT = COLUMN OBJECT = COLUMN NAME = GRATING_OFFSET DATA_TYPE = INTEGER START_BYTE = 55 BYTES = 1 FORMAT = "I1" DESCRIPTION = "The physical offset (0-7) of the NIMS grating during the observation segment. It defines the physical grating position of logical grating position 0." END_OBJECT = COLUMN OBJECT = CONTAINER NAME = PARAMETER_TABLES START_BYTE = 56 BYTES = 18 REPETITIONS = 2 DESCRIPTION = "The contents of the two Parameter Tables (PTABs) in the NIMS instrument. The PTABs control the operation of the instrument. Six items have been extracted from each 4-byte parameter table." OBJECT = COLUMN NAME = MODE_REPEAT_COUNT DATA_TYPE = INTEGER START_BYTE = 1 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The mode repeat count is the number of times the grating cycle defined in the PTAB is to be repeated before control is transferred to the other PTAB. It is the first byte of the PTAB." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MIRROR_OPERATION_FLAG DATA_TYPE = INTEGER START_BYTE = 6 BYTES = 1 FORMAT = "I1" DESCRIPTION = "The mirror operation flag, if set, indicates that the NIMS secondary mirror is operating, i.e. the instrument is in a MAP mode. If the flag is not set, the mirror remains in position 9 (of 0-19), i.e. the instrument is in a SPECTROMETER mode. The flag is the first bit of the second byte of the PTAB." END_OBJECT = COLUMN OBJECT = COLUMN NAME = AUTOBIAS_FLAG DATA_TYPE = INTEGER START_BYTE = 9 BYTES = 1 FORMAT = "I1" DESCRIPTION = "The autobias flag, if set, means that thermal channel autobias is off. This is intended for use only when the NIMS instrument is at room temperature. The flag is normally NOT set, implying that the thermal detectors (15-17) have different gains in each half of the DN range. This flag is the second bit of the second byte of the PTAB." END_OBJECT = COLUMN OBJECT = COLUMN NAME = START_GRATING_POSITION DATA_TYPE = INTEGER START_BYTE = 11 BYTES = 2 FORMAT = "I2" DESCRIPTION = "The start grating position is the first logical position of the grating when the PTAB assumes control of the instrument. It is in the 6 least significant bits of the second byte of of the PTAB." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GRATING_POSITION_INCREMENT DATA_TYPE = INTEGER START_BYTE = 14 BYTES = 2 FORMAT = "I2" DESCRIPTION = "The grating position increment controls the step size between grating positions. It is the third byte of the PTAB." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GRATING_POSITIONS DATA_TYPE = INTEGER START_BYTE = 17 BYTES = 2 FORMAT = "I2" DESCRIPTION = "The number of grating positions (separated by the grating position increment) in one repetition of the operation defined in the PTAB, except for fixed map and safe modes, in which it governs only the motions of the secondary mirror. It is the fourth byte of the PTAB." END_OBJECT = COLUMN END_OBJECT = CONTAINER OBJECT = COLUMN NAME = ELECTRONICS_CALIBRATION_FLAG DATA_TYPE = INTEGER START_BYTE = 94 BYTES = 1 FORMAT = "I1" DESCRIPTION = "An electronic calibration of the NIMS instrument will occur in the first RIM of the observation if the flag is set." END_OBJECT = COLUMN OBJECT = COLUMN NAME = OPTICAL_CALIBRATION_FLAG DATA_TYPE = INTEGER START_BYTE = 96 BYTES = 1 FORMAT = "I1" DESCRIPTION = "An optical calibration of the NIMS instrument will occur in the first RIM of the observation if the flag is set." END_OBJECT = COLUMN OBJECT = COLUMN NAME = START_TIME DATA_TYPE = CHARACTER START_BYTE = 98 BYTES = 17 FORMAT = "A17" DESCRIPTION = "The start time of the planned observation as a Universal Time in ISO format, corresponding to NATIVE_START_TIME." END_OBJECT = COLUMN OBJECT = COLUMN NAME = REALTIME_FLAG DATA_TYPE = INTEGER START_BYTE = 117 BYTES = 1 FORMAT = "I1" DESCRIPTION = "If the flag is set, the observation was transmitted in the realtime data stream." END_OBJECT = COLUMN OBJECT = COLUMN NAME = RECORD_FLAG DATA_TYPE = INTEGER START_BYTE = 119 BYTES = 1 FORMAT = "I1" DESCRIPTION = "If the flag is set, the observation was recorded on the Galileo tape recorder and transmitted later." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PRIMARY_TARGET_NAME DATA_TYPE = CHARACTER START_BYTE = 121 BYTES = 8 FORMAT = "A8" DESCRIPTION = "The primary target of the observation. Besides the various planets and satellites, this may be SKY, STAR (for boresight calibration), DARK (for dark calibrations) or CAL (for optical and radiometric calibrations)." END_OBJECT = COLUMN END_OBJECT = TABLE END