RECORD_TYPE = "STREAM" OBJECT = TEXT PUBLICATION_DATE = 2003-10-05 NOTE = "Listing DS1 keyword definitions." END_OBJECT = TEXT END DS1 MICAS Keywords ======================================= New Keywords Proposed in by DS1 in 1998 ======================================= NAME = IMAGE_NUMBER GENERAL_DATA_TYPE = INTEGER UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE DESCRIPTION = " A sequential counter for numbering images. For Deep Space 1, the first image after flight software starts is 0; multiple IR/UV line scans commanded through a single exposure request are considered a single image and are bundled in the same image file." NAME = TARGET_NUMBER GENERAL_DATA_TYPE = INTEGER UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE DESCRIPTION = " A number supplied to Nav to identifiy a target." NAME = ONBOARD_FILENAME GENERAL_DATA_TYPE = CHARACTER UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE MAXIMUM_LENGTH = 60 DESCRIPTION = " The name of the image as stored in the Deep Space 1 file system prior to downlink. Ends in .pds if uncompressed, .eric if compressed." ****this keyword has now been replaced by NATIVE_START_TIME **** NAME = IMAGE_TIME GENERAL_DATA_TYPE = REAL UNIT_ID = SECONDS STANDARD_VALUE_TYPE = NONE DESCRIPTION = " A time associated with the start of an image exposure. For Deep Space 1, image_time is the value of the onboard ephemeris counter at the start of an image exposure; the counter counter represents ephemeris time seconds past the reference epoch of 1998 Jan 01 12:00:00 Ephemeris Time." NAME = SC_ATTITUDE_QUATERNION GENERAL_DATA_TYPE = REAL UNIT_ID = NONE STANDARD_VALUE_TYPE = RANGE DESCRIPTION = " A 4-vector describing the attitude of the spacecraft. For DS1, the attitude quaternion as handed by the ACS. NAME = IMAGE_USE GENERAL_DATA_TYPE = CHARACTER UNIT_ID = NONE STANDARD_VALUE_TYPE = DYNAMIC MAXIMUM_LENGTH = 20 DESCRIPTION = " A description of the intended use for an image." STANDARD_VALUE_SET = { "NAV", "SCI", "NAVSCI" } NAME = READOUT_CLOCK GENERAL_DATA_TYPE = CHARACTER UNIT_ID = NONE STANDARD_VALUE_TYPE = DYNAMIC MAXIMUM_LENGTH = 10 DESCRIPTION = " The speed at which a CCD was clocked out. For DS1, the speed may affect teh image in various ways. It was expected the project would settle on one speed for most of the mission." STANDARD_VALUE_SET = { "150KHZ", "300KHZ", "600KHZ", "1.2MHZ" } NAME = MIN_COMPRESSION_RATION GENERAL_DATA_TYPE = REAL UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE DESCRIPTION = " The minimum required compression ratio. For DS1, 1.0 means lossless. The effective compression may be greater such that the image will be compressed at least as much as requested, and more if possible without additional data loss." NAME = UV_VOLTAGE_LEVEL GENERAL_DATA_TYPE = INTEGER UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE DESCRIPTION = " The voltage level setting for a UV power supply. For DS1, valid setting are 0-15. NAME = OBA1_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " The temperature for first axis of the optical bench assembly; Not mappped to degrees in 1998." NAME = OBA2_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " The temperature for the second axis of the optical bench assembly; Not mappped to degrees in 1998." NAME = OBA3_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " The temperature for the third axis of the optical bench assembly; Not mappped to degrees in 1998." NAME = M1_MIRROR_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " Not defined nor mappped to degrees in 1998." NAME = IR_RADIATOR_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " Not defined nor mappped to degrees in 1998." NAME = OBA_CUBE_SUPPORT_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " The temperature at the cube support in the optical bench assembly; Not mapped to mappped to degrees in 1998." NAME = IR_DETECTOR_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " Not defined nor mappped to degrees in 1998." NAME = UV_DETECTOR_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " Not defined nor mappped to degrees in 1998." NAME = ELECTRONICS_CHASSIS_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " Not defined nor mappped to degrees in 1998." NAME = COVER_ACTUATOR_TEMP GENERAL_DATA_TYPE = REAL UNIT_ID = UNK STANDARD_VALUE_TYPE = NONE DESCRIPTION = " Not defined nor mappped to degrees in 1998." NAME = SUBIMAGE_X GENERAL_DATA_TYPE = INTEGER UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE DESCRIPTION = " The sample offset into the detector for a partial image. For DS1, when only part of an image was downlinked, this value and subimage_y were set such that the upper-left corner of the view is (0,0)." NAME = SUBIMAGE_Y GENERAL_DATA_TYPE = INTEGER UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE DESCRIPTION = " The line offset into the detector for a partial image. For DS1, when only part of an image was downlinked, this value and subimage_x were set such that the upper-left corner of the view is (0,0)." NAME = CLIENT_DATA_1 GENERAL_DATA_TYPE = CHARACTER UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE MAXIMUM_LENGTH = 40 DESCRIPTION = " For DS1, client_data_1 is the first half of a 40-byte field represented by 80 hex digits or characters. See client_data_2. The value was specified by Nav. MICAS recorded this value in the image request and handed it back to Nav through the image header. MICAS flight software makes no interpreation of this value." NAME = CLIENT_DATA_2 GENERAL_DATA_TYPE = CHARACTER UNIT_ID = NONE STANDARD_VALUE_TYPE = NONE MAXIMUM_LENGTH = 40 DESCRIPTION = " For DS1, client_data_2 is the second half of a 40-byte field represented by 80 hex digits or characters. See client_data_1. The value was specified by Nav. MICAS recorded this value in the image request and handed it back to Nav through the image header. MICAS flight software makes no interpreation of this value." =============================================== Existing Keywords with DS1-Specific Definitions =============================================== EXPOSURE_DURATION - UNIT_ID = SECOND, defined in '98 SC_SUN_POSITION_VECTOR - UNIT_ID was not specified in '98; values do not appear to be in the standard unit of km - For DS1, this value may be zeroes because MICAS flight software requested these values from Nav on exposure and typically had not seen the answer before the images were written out. SC_SUN_VELOCITY_VECTOR - UNIT_ID was not specified in '98; value do not appear to be in the standard unit of km(?!). - For DS1, this value may be zeroes because MICAS flight software requested these values from Nav on exposure and typically had not seen the answer before the images were written out. ******this keyword has been replaced by DETECTOR_ID ********* DETECTOR - DS1 proposed values "VISCCD", "UVCCD", "APS", and "IR".