PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 80 OBJECT = TEXT PUBLICATION_DATE = 2011-12-14 NOTE = "Acronyms and abbreviations used in this data set " END_OBJECT = TEXT END Acronyms and Abbreviations used in this data set, arranged alphabetically ========================================================================= 81P - 81P/Wild 2 (1978 A2); comet 9P - 9P/Tempel 1 (1867 G1); comet ABSC - ABSolute radiometry Calibration; NAVCAM data calibration step ADC - Analog-to-Digital Converter AE - 5535 Annefrank Encounter; SDU NAVCAM image partition/phase ASCII - American Std Code for Info. Interchange; text, numeric codes ASTM - American Society for Testing and Materials; http://www.astm.org/ AU - Astronomical Unit; ~150Mm BADP - BAD Pixel; map BCK - BaCK; one of two NAVCAM shutter polarities BDFX - Bias & Dark excess subtraction Fix; NAVCAM data calibration step BIAS - BIAS subtraction; NAVCAM data calibration step BLS - BaseLine Stabilization; serial overscan pixels in NAVCAM data C1 - Cruise 1; SDU NAVCAM image partition/phase C2 - Cruise 2; SDU NAVCAM image partition/phase C3 - Cruise 3; SDU NAVCAM image partition/phase C4 - Cruise 4; SDN NAVCAM image partition/phase C5 - Cruise 5; SDN NAVCAM image partition/phase C6 - Cruise 6; SDN NAVCAM image partition/phase CAD - Computer-Aided Drafting CAL - Calibration CCD - Charge-Coupled Device; solid-state digital imaging detector CCW - Counter-ClockWise C - (degrees) Celsius; temperature measurement C&DH - Command and Data Handling CIDA - Cometary and Interstellar Dust Analyzer; on the SDU S/C CMT - CoMmenT CNois - Coherent Noise CO - CHECKOUT; SDN NAVCAM image partition/phase CR - Carriage Return CW - ClockWise DARK - DARK subtraction; NAVCAM data calibration step DCMP - DeCoMPression of compressed pixels; NAVCAM data calibration step DEC - DEClination DESC - Description DFMI - Dust Flux Monitor Instrument; on the Stardust spacecraft DI - Deep Impact; mission or spacecraft DIXI - Deep Impact eXtended Investigation; see EPOXI DM&A - Data Management & Archive; JPL front-end to SDC DMA - Direct Memory Access; see also DM&A DN - Data Number; raw, i.e. non-physical, units of NAVCAM instrument DU - Data Unit of FITS file; see PDU and EDU E490 - Std Solar Constant & 0-Air Mass Solar Spectral Irradiance Tables EDR - Engineering Data Record; typically raw data EDU - Extension Data Unit; extension of a FITS file EE - Earth/Moon Encounter; SDU NAVCAM image partition/phase E - Encounter; shorthand for TCA; e.g. E-60d is sixty days before TCA EME - Earth Mean Equator; typically "EME J2000" see J2000 EPOCh - Extrasolar Planet Observations and Characterization; see EPOXI EPOXI - EPOCh and DIXI; extended missions of Deep Impact spacecraft ER - EARTH RETURN; SDU NAVCAM image partition/phase FAT - Serial-overscan pixels of NAVCAM imager F - (degrees) Fahrenheit; temperature measurement FIFO - First-In, First-Out; data buffer FITS - Flexible Image Transport System; http://fits.gsfc.nasa.gov/ FLAT - FLATfield correction; NAVCAM data calibration step FOPL - FOcal Plane FOV - Field Of View; the area imaged by the NAVCAM CCD FPGA - Field-Programmable Gate Array FPN - Fixed-Pattern Noise FWD - ForWarD; one of two NAVCAM shutter polarities FWHM - Full-Width at Half-Maximum; describes peaks in data curves GDS - Ground Data System HGA - High-Gain Antenna HIRES - High-RESolution; NAVCAM filter HTML - Hyper-Text Meta-Language ID - IDentifier IEEE - Institute of Electrical and Electronics Engineers; numeric format IFOV - Incremental Field Of View; the area images by one NAVCAM CCD pixel IMG - IMaGe ISS - Imaging SubSystem; CASSINI spacecraft imagers J2000 - Julian frame or epoch; Earth axis & orbit @ 2000 Jan 01 12:00 UTC JPEG - Joint Photographic Experts Group; image format JPG - see JPEG JPL - Jet Propulsion Laboratory, Pasadena, CA, USA; http://jpl.nasa.gov/ LF - LineFeed LL - Lower Left LR - Lower Right MASK - MASKing pixels; NAVCAM data calibration step MET - Mission Event (Elapsed) Time; time (of an event) at the spacecraft MISR - Multi-angle Imaging SpectroRadiometer project MSB - Most-Significant Byte first; byte ordering MTF - Modulation Transfer Function; related to PSF N/A - Not Applicable or Not Available NASA - National Aeronautics and Space Administration NAVCAM - Navigation Camera; instrument on the Stardust spacecraft NAV - NAVigation; autotracking N.B. - Nota Bene; imperative "note well" NC - NAVCAM NExT - New Exploration of Tempel 1; Stardust extended mission NH2 - Light absorption band of ammonium compound; NAVCAM filter NIR - Near InfraRed light; NAVCAM filter NOIS - NOISe calculation; NAVCAM data calibration step O1D - Oxygen light absorption band; NAVCAM filter ODL - Object Description Language OPNAV - OPtical NAVigation; NAVCAM filter PDF/A - Portable Document Format, Level 1A; also PDF/A-1a PDF - Portable Document Format PDS - Planetary Data System; http://pds.jpl.nasa.gov/ PDU - Primary Data Unit; first data unit of a FITS file PFF - Previous Found Flush PFR - Physical File Record PFX - PreFiX PIL - Python Imaging Library; software toolkit library PL - PRELAUNCH PNG - Portable Network Graphics; image format PSF - Point Spread Function; describes optics wrt ideal pinhole camera RA - Right Ascension RATE - RATE calculation, DN per unit time; NAVCAM data calibration step RDR - Reduced Data Record; typically calibrated data RH - Right-Hand(ed); cartesian coordinate system ROM - Read-Only Memory RS-422 - Serial communication protocol SATU - SATUrated pixel check; NAVCAM data calibration step SCLK - Spacecraft CLocK S/C - Spacecraft SDC - Science Data Center SDN - Stardust-NExT extended mission; SDU is Stardust prime mission SDU - StarDUst (spacecraft i.e. INSTRUMENT_HOST_ID); also prime mission SIS - Software Interface Specification SNRMAP - see SNRM SNRM - SNR Map calculation; NAVCAM data calibration step SNR - Signal-to-Noise Ratio SPICE - SPacecraft, Instrument, Camera, Event; http://naif.jpl.nasa.gov SYNC - SYNCHronization pixels in telemetry stream of NAVCAM data TCA - Time of Closest Approach (of Stardust S/C to 9P/Tempel 1) TE - 9P/Tempel 1 Encounter; SDN NAVCAM image partition/phase TEMP - TEMPerature UART - Universal Asynchronous Receiver/Transmitter; serial comm device UL - Upper Left UR - Upper Right UTC - Universal Coordinated Time WCS - World Coordinate System; FITS header convention WE - 81P/Wild 2 Encounter; SDU NAVCAM image partition/phase XLS - eXceL Spreadsheet