CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 2848 FILE_RECORDS = 1 ^HEADER_TABLE = "E1G1MLV2.DRK" ^DARK_CURRENT_TABLE = ("E1G1MLV2.DRK",129) DATA_SET_ID = "GO-E/L-NIMS-2-EDR-V1.0" SPACECRAFT_NAME = GALILEO_ORBITER INSTRUMENT_NAME = "NEAR_INFRARED_MAPPING_SPECTROMETER" INSTRUMENT_ID = NIMS OBSERVATION_ID = E1HNDARK02 NATIVE_START_TIME = 611455.26 NATIVE_STOP_TIME = 611458.90 DESCRIPTION = "NIMS dark current file generated from the long map portion of the E1 Heaven Dark observation E1HNDARK02. It is used by both the ISIS and Vicar NIMS cube generation software in the decalibration of raw NIMS data taken in neighboring observations." OBJECT = HEADER_TABLE INTERCHANGE_FORMAT = BINARY ROWS = 1 COLUMNS = 4 ROW_BYTES = 128 DESCRIPTION = "The header table of the dark current file contains ancillary information for the dark current values provided in the dark current table." OBJECT = COLUMN NAME = GAIN_MODE_NUMBER DATA_TYPE = VAX_INTEGER START_BYTE = 1 BYTES = 4 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 = INSTRUMENT_MODE_NUMBER DATA_TYPE = VAX_INTEGER START_BYTE = 5 BYTES = 4 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)" END_OBJECT = COLUMN OBJECT = COLUMN NAME = CHOPPER_MODE_NUMBER DATA_TYPE = VAX_INTEGER START_BYTE = 9 BYTES = 4 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 = SPARE DATA_TYPE = CHARACTER START_BYTE = 13 BYTES = 116 END_OBJECT = COLUMN END_OBJECT = HEADER_TABLE OBJECT = DARK_CURRENT_TABLE INTERCHANGE_FORMAT = BINARY ROWS = 40 COLUMNS = 1 ROW_BYTES = 68 DESCRIPTION = "The dark current table is a two-dimensional array of mean dark current values over an observation, averaged separately for each of the 17 NIMS detectors at each of the 40 'mirror positions' (20 down, 20 up) in a minor frame (2/3 second) of NIMS operation. The values for the set of detectors at a particular 'mirror position' form a row of the table." OBJECT = COLUMN NAME = DARK_CURRENT DATA_TYPE = VAX_REAL START_BYTE = 1 BYTES = 68 ITEMS = 17 ITEM_BYTES = 4 DESCRIPTION = "A single value is the mean of the values of a specific detector at a specific 'mirror position', averaged over a time interval during which the NIMS instrument is pointing at dark sky." END_OBJECT = COLUMN END_OBJECT = DARK_CURRENT_TABLE END