# Misc 2MASS The 2 Micron All Sky Survey # A A/D Analog to Digital AAS American Astronomical Society AASC Astronomy & Astrophysics Survey Committee Accum Accumulator ACK Acknowledge ACS Attitude Control System / Advanced Camera for Surveys ACT Automated Command Tracker / Attitude Control Tracker AD Aperture Door ADC Analog to Digital Converter ADD Algorithm Description Document ADM Aperture Door Mechanism ADP Astrophysics Data Program ADU Analog to Digital Units AEDC Arnold Engineering Development Center AGC Automatic Gain Control AGN Active Galactic Nuclei AI Action Item AIL Action Item List AIM Applied Innovation Management AIPS Astronomical Image Processing System AIRE AOR/IER Interpreter & Resource Estimator AIS Automated Information Security AKPM Attitude Knowledge Performance Monitor ALSF Anomalously Large Solar Flare AMMOS Advanced Multimission Operations System ANSI American National Standards Issue AO Announcement of Opportunity AOE Astronomical Optical Efficience AOR Astronomical Observation Request AOS After Acquisition of Signal AOT Astronomical Observation Template APES Automated Pipeline Executive for Spitzer APEX Astronomical Point Source Extractor APID Application Process Identifier APO Aperture Door Opening AR Archival Research / Anomaly Report ARC (NASA) Ames Research Center APID Application Process Identifier ASCII American Standard Code for Information Interchange ASD Atomic Spectra Database ASE Airborne Support Equipment ASIST Advanced Spacecraft Integration and System Test ASP Automated Sequence Processor ASP Astronomical Society of the Pacific ASQC American Society for Quality Control ATLO Assembly Test and Launch Operations AU Astronomical Unit AURA Association of Universities for Research in Astronomy, Inc. AWG American Wire Gauge AXAF Advanced X-Ray Astrophysics Facility (now CHANDRA) # B B/G Background B/U Backup BATC Ball Aerospace and Technology Corporation BCD Basic Calibrated Data BCDL Block Command Definition Language BCH Bose-Chaudhuri-Hocquenghem (coding for telecommand CLTUs) BD Brown Dwarf BER Bit Error Rate BIB Blocked Impurity Band BIC Baseline Instrument Campaign BLF Best Lock Frequency BMDO Ballistic Missile Defense Organization BNA Boeing North America BOA Beginning of Activity BOT Beginning of Track bps bits per second BPS Ball Process Standard BQD Browse Quality Data BRDF Bidirectional Reflectance Distribution Function BS Bore Sight BSC Battery Simulation Console BVRs Block V Receivers BWG Beam Wave Guide # C C Centrigrade C2D Cores to Disks (Legacy Project) C&DH Command and Data Handling C&DHU Command and Data Handling Unit CA Cryrogenic Assembly CAA Committee on Astronomy and Astrophysics CAT Customer Adaptation Team CATNAP Command and Telemetry 'N Also Parameters CAVE Client AIRE Visibility Expeditor CCB Change Control Board CCL Channel Conversion Language CCSDS Consultative Committee for Space Data Systems CCU Charge Control Unit CDE Cognizant Development Engineering CDF Control Data File CDHU Command and Data Handling Unit CDIF Command and Data Interface Unit CDL Command Definitions Language CDMU CTA Driver Multiplexer Unit CDR Critical Design Review / Central Data Recorder CDSCC Canberra Deep Space Communications Complex CE Combined Electronics CGRO Compton Gamma Ray Observatory CHANDRA Chandra X-ray Observatory CIA Cold Instrument Assembly CIB Cold Interface Bond CIDS Critical Item Development Specification CIO Channelized Input/Output CIP Compression Information Packet (per CCSDS) CIRB Cosmic Infrared Background CIT California Institute of Technology CLAES Cryrogenic Limb Array Etalon Spectrometer CLFP Component Level Fault Protection CLTS Close Loop Test Simulator/Set CLTU Command Link Transmission Unit CM Configuration Management CM/DM Configuration Management/Data Management Cmd Command CMD_DSN File radiated through the DSN to a spacecraft. CMIC C&DH Module Interface Card CMOS Complementary Metal-Oxide Semiconductor COBE Cosmic Background Explorer COTS Commercial Of-The-Shelf CP Call for Proposals / Coupler CP-1 Cycle 1 Call for Proposals CP-2 Cycle 2 Call for Proposals CPM Communications Performance Monitor CPT Channel Parameter Table / Contamination Product Team CPU Central Processing Unit CPV Common Pressure Vessel CR Cosmic Ray / Change Request CRC Cyclic Redundancy Check CREI Contract with Educational Institution CSC Common Start Configuration CSCI Computer Software Configuration Item CSE Control Section Electronics CSFS Control Section Flight Software CSMM Cryogenic Scan Mirror Mechanism CSOC Consolidated Space Operations Contract CTA Cryogenic Telescope Assembly CTD Command Telemetry Dictionary CTF Community Task Force CTIA Capacitive TransImpedence Amplifier CTT Compatibility Test Trailer CU Cornell University CXO Chandra X-ray Observatory CVS Concurrent Version System CVZ Continuous Viewing Zone CY Calendar Year / Cycle # D D/L Downlink Db Database DAC Digital to Analog Converter DAT Data Analysis Tools DBA Database Administrator DBMS Database Management System DC Direct Current DCE Data Collection Event / Dust Cover Eject DCMC Defense Contract Management Command DCS Double Correlated Sampling DDT Director's Discretionary Time DEC Declination DED Direct Engineering Data Desat Desaturation (Maneuver) DIRBE Diffuse Infrared Background Experiment DKF DSN Keyword File DLLE Downlink Loss Executive DMD Data Monitor and Display DMT Data Management Team DN Digital Number/Data Number DO Director's Office DOC Depth of Coverage DOM Distributed Object Manager DPA Destructive Physical Analysis DQA Data Quality Analysis DQE Detector Quantum Efficiency DR Discrepancy Report DRAM Dynamic Random Access Memory DRM Design Reference Mission Drvr Driver DSCC Deep Space Communications Complexes DSMS Deep Space Mission System DSN Deep Space Network DSNOps DSN Operations DSOC Deep Space Operations Center DSOT Data System Operations Team DSP Digital Signal Processors DSS Digital Sky Survey / Deep Space Station DWG Drawing # E EAA Enterprise Associate Administrator EBL Extragalactic Background Light ECPS Engine Change Proposal ECR Engineering Change Request ECRF Electronic Command Request Form ECSV Encapsulated Comma-Separated Values EDAC Error Detection and Correction EDR Experiment Data Record EDU Engineering Development Unit EED Electro-Explosive Device EEIS End-to-End Information System EEPROM Electrically Erasable Programmable Read Only Memory EGSE Electrical Group Support Equipment EIRR External Independent Readiness Reviews ELV Expendable Launch Vehicle EM Engineering Model EMC Electromagnetic Compatibility EMI Electromagnetic Interference EMIC EPS Module I/F Card EMU Engineering Model Unit EOA End of Activity EOF End of File EO Engineering Order EOM End of Mission EOT Engineering Operations Template EPO Education and Public Outreach EPS Electrical Power System ERO Early Release Observation / Extremely Red Object ERT Earth Receive Time ESA European Space Agency ESD Electrostatic Discharge ESMCR Eastern Space & Missile Center Regulation ESO European Southern Observatory ET End Time EU Expander Unit / Engineering Unit EVA Extra-Vehicular Activity EVRs Event Reporting EWG Expansion Working Group EWR Eastern Western Range Exec Executive EX-PET Extragalactic (Imaging) Performance Estimation Tool # F FAQ Frequently Asked Question FCT Flight Control Team FDDI Fiber Distributed Data Interface FDIR Fault Detection, Isolation and Recovery FDS Facility Data System FDSIVP Facility Data System Integration and Verification Plan FDSn Flight Data System verification phase n FEI File Exchange Interface FEPS Formation and Evolution of Planetary Systems (Legacy Project) FES Flight Engineering Support FET Field Effect Transistor FGICD Flight Ground Interface Control Document FHT Fault History Table FIRST Focal Plane Instruments and Requirement Science Team FITS Flexible Image Transport System FLS First Look Survey FLT Flight FM Flight Model FMEA Failure Mode Effects Analysis FMECA Failure Mode Effects and Criticality Analysis FNS File Notification Service FOC Flight Operations Center FODB Flight Operations Database FONSI Funding of No Significant Impact FOS Flight Operations System FOT Flight Operations Team FOV Field Of View FP Fault Protection FP&C Fine Pointing & Control Mode FPA Focal Plane Assembly (MIPS)/ Focal Plane Array (IRAC) FPC Flight Processor Card FPDD Fault Protection Description Document FPGA Field Programmable Gate Array FPMA Focal Plane Mount Array FPE Focal Plane Electronics FPRD Fault Protection Requirements Document FQT Final Qualification Test FR Failure Report FR&C Flight Rules and Constraints FRCD Flight Rules and Constraints Document FRD Facility Requirements Document FRR Flight Readiness Review FS Facility Scientist FSRR Facility System Requirements Review FSS Flight Support System FSW Flight Software FTA Fault Tree Analysis FTE Full Time Equivalent FTP File Transfer Protocol FUDL Fast Uplink Downlink FULDL Fast Uplink Downlink FUSE Far Ultraviolet Spectroscopic Explorer FWHM Full Width at Half Maximum FY Fiscal Year # G G&MO Ground & Mission Operations G-al Gamma Alumina GaAs Gallium Arsenide Gb Gigabyte GCF Ground Communications Facility GCR Galactic Cosmic Ray GDS Ground Data System GDSCC Goldstone Deep Space Communications Complex Ge:Ga Gallium-doped Germanium GHe Gaseous Helium GHz Gigahertz GIDEP Government Industry Data Exchange Program GLIMPSE Galactic Legacy Infrared Mid-Plane Survey Extraordinaire GLL Galileo Project GN2 Gaseous Nitrogen Gnd Ground GO General Observer GOODS Great Observatories Origins Deep Survey GOWG Ground Operations Working Group GPR Global Position Reference GR Girth Ring GRO Gamma Ray Observatory GRT Germanium Resistance Transducer GS Ground System/Segment GSE Ground Support Equipment GSFC Goddard Space Flight Center GSW Ground Software GTO Guaranteed Time Observer GUI Graphical User Interface # H H/S Health & Status H/W Hardware HB Heartbeat HCD Hardware Command Decoder HDF Hubble Deep Field HDW Hardware He Helium HEF High Efficiency Feed HEO High Earth Orbit HEPA High Efficiency Particulate HGA High Gain Antenna HK HouseKeeping HLFP High Level Fault Protection Hlth Health HMI Human Machine Interface HST Hubble Space Telescope Htr Heater HTTP Hypertext Transport Protocol # I I&T Integration and Test I/F Interface I/O Input/Output IAU International Astronomical Union IBC Impurity Band Conduction IC Integrated Circuit ICC Instrument Command and Control ICD Interface Control Document ICRS International Celestial Reference System IDC Indirect Costs IDE Integrated Drive Electronics IDL Interactive Data Language IER Instrument Engineering Request IET Instrument Engineering Template IG Interest Group IICD Internal Interface Control Document (CTA) IMCT Integration Mission Control Team IMF Initial Mass Function IMIC Integrated Multiple Instrument Chamber IMPST Integrated Mission Planning and Scheduling Team (obsolete; now OPST) InSb Indium Antimonide INT Integration and Test INTEGRAL International Gamma-Ray Astrophysics Laboratory IO Input Output IOC In-Orbit Checkout IPAC Infrared Processing and Analysis Center IPO Input Process Output IPP Instrument Procedures and Parameters IPT Integrated Product Team IPRD Instrument Performance Requirements Document IR Infrared IRAC Infrared Array Camera IRAF Image Reduction and Analysis Facility IRAS Infrared Astronomical Satellite IRD Interface Requirement Document IRS Infrared Spectrograph IRSA NASA/IPAC Infrared Science Archive IRSKY Infrared Sky (science support tool) IRT Infrared Telescope (Spacelab) IRTS Infrared Telescope in Space IRU Inertial Reference Unit IS Instrument Support, Information Systems or Information Security ISAR Incident Surprise and Anomaly Report ISDS IRAC (Infrared Array Camera) Science Data Simulator ISM Interstellar Medium ISO Infrared Space Observatory ISSA IRAS Sky Survey Atlas IST Instrument Support Team IT Instrument Team / Information Technology ITAR International Traffic in Arms Regulations ITL Incompressible Test List IUE International Ultraviolet Explorer IVCS Inner Vapor Cooled Shield IV&V Independent Verification and Validation # J J2EE Java 2 Enterprise Edition JDBC Java Database Connectivity JPL Jet Propulsion Laboratory Jy Jansky JDBC Java Database Connectivity JIT Joint Instrument Team # K K Kelvin KAO Kuiper Airborne Observatory KBO Kuiper Belt Object KSC Kennedy Space Center KPNO Kitt Peak National Observatory # L L Launch LAN Local Area Network LBTC Low Background Test Cryostat (MIPS) LC Legacy Call LegSci Legacy Science LET Linear Energy Transfer LF Long Form LGA Low Gain Antennae LH Long-High LHe Liquid Helium LL Long-Low LIRG Luminous Infrared Galaxy LM Launch Mode LMA Lockheed Martin Astronautics LME Launch Mode Executive LMMS Lockheed Martin Missiles and Space Company LMSSC Lockheed Martin Space System Company LMSOC Lockheed Martin Space Operations Company LOE Level of Effort LOI Letter of Intent LOS Line of Sight / Loss of Signal LPIV Low Pressure Isolation Valve LPR Local Position Reference LRP Long Range Planning LRR Launch Readiness Review LSB Least Significant Bit LSWG Legacy Science Working Group LTM Load Transformation Matrix LTV Low Thrust Vent LV Launch Vehicle # M M&P Materials and Process M&PD Mission & Payload Development Division MACHO Massive Compact Halo Object MAM Mission Assurance Manager MAP Mission Assurance Plan / Microwave Anisotropy Probe Mb Megabyte Mbps Megabit per second MC Mission Critical MCB Mission Change Board (also MCCB = Mission Change Control Board) MCE Mission Critical Events MCO Mars Climate Orbiter MCPOM Momentum Control Performance Monitor MCR Mission Change Request or MIPS Characterization Reports MDIRD Mission Data Interface Requirements Document MDO Mission Design and Operations MDR Mission Dress Rehearsal / Material Discrepancy Report MDSSC Madrid Deep Space Communications Complex MECO Main Engine Cutoff MG Mass Gauge heater MGDS Multi-Mission Ground Data System MHz Megahertz MIC Multiple Instrument Chamber MIL Military Mil-Std Military Standard MIO Master Input/Output Card MIPL Multimission Image Processing Laboratory MIPS Multi-Band Imaging Photometer for Spitzer MIUL Materials Item Usage Agreement mJy milliJansky MJy megaJansky MLI Multi-Layer Insulation MMA Mission Management Area MMC Mass Memory Card MMNav Multimission Navigation MMNT Multimission Navigation Team MMOC Multimission Operations Center MO&DA Mission Operations and Data Analysis MOC Mission Operations Center MODB Mission Operations Database MOPEX Mosaicking and Point Source Extraction MOS Mission Operations System MOSS Moving Object Support System MOU Memorandum of Understanding MP Mission Planning MRB Material Review Boards MRR Mission Requirements Request MSA Mission Support Area MSB Most Significant Bit MSD Mission System Design MSFC Marshall Space Flight Center MST Mission Sequence Team MSTAs Mission Services Training Activities MSX Midcourse Space Experiment MT Management Team MU Make-up Heater MUA Material Usage Agreement MUX Multiplexer MVCS Middle Vapor Cooled Shield # N N/A Not Applicable NAIF Navigation Ancillary Information Facility NAK Not Acknowledge NAR Non-Advocate Review NASA National Aeronautics and Space Administration NASCOM NASA Communications Network NAV Navigation NCF Network Computing Facility NCP Network Consolidation Project NDI Non Destructive Inspection NED NASA/IPAC Extragalactic Database NEPA National Environmental Policy Act NF Notch Filter NGC New General Catalog NGST Next Generation Space Telescope NHB NASA Handbook NICMOS Near-Infrared Camera and Multi-Object Spectrometer NiH2 Nickel-Hydrogen NIST National Institute of Standards and Technology NOA New Obligational Authority NOAO National Optical Astronomy Observatories NOCC Network Operations Control Center NOCC-RT Network Operations Control Center - Real Time Monitoring Tool NOP Network Operations Plan NOPE Network Operations NPG NASA Procedures and Guidelines NRA NASA Research Announcement NRAO National Radio Astronomy Observatories NRZL Non Return to Zero Low NSI NASA Science Internet NSPARS Non Standard Part Approval Request NSTD Non Standard NVR Non Volatile Residue # O OASPL Overall Sound Pressure Level Obj Object Obs Observatory OD Orbit Determination OET Observatory Engineering Team OFP Observatory Fault Protection OIA Operational Interface Agreements OMC Orion Molecular Cloud OO Object Oriented Ops Operations OPST Observatory Planning and Scheduling Team OPZ Operational Pointing Zone ORR Operational Readiness Review / Observatory Requirements Review ORT Operational Readiness Test OS Observer Support / Operating System OSC Office of Space Communications OSE Observatory System Engineering OSEIT Observatory System Engineering, Integration and Test OSF Ordinary Solar Flare OSHA Occupational Safety OSS Office of Space Science OSSA Office of Space Science and Applications OST Observer Support Team OSTL Operations Spacecraft Test Lab OVCS Outer Vapor Cooled Shield OWLT One Way Light Time # P P/S Pedestal / Signal (in P/S Mode) P Pressure PA Product Assurance / Public Affairs PACS Pointing and Attitude Control System PAF Product Attach Fitting PAO Period of Autonomous Operations PAP Packet Acknowledgment Process PAR Prime Archival Research PCA Program Commitment Agreement PCB Parts Control Board PCPM Pointing Control Performance Monitor PCRS Pointing Control Reference Sensor PCS Pointing Control (Sub)System PDC Power Distribution Cards PDDU Power Distribution & Driver Unit PDF Portable Document Format PDP Project Documentation Plan PDR Preliminary Design Review PDU Power Distribution Unit PEF Predicted Events File PERL Practical Extraction and Report Language PEQA Project Engineering Quality Analysis PET Performance Estimation Tool PFR Problem Failure Report PG&D Power Generation and Distribution PH/SR Photometry/Super-Resolution PI Principal Investigator / Planet Imager PICD Performance and Interface Control Document PIN Positive Intrinsic Negative (diode) PIND Part Impact Noise Detection PIU Pyro Initiator Unit PLF Payload Fairing PLP Project Leadership Process PM Proper Motion / Primary Mirror / Performance Monitor PMA Primary Mirror Assembly PMC Program Management Council PMS Performance Measurement System PNAR Preliminary Non-Advocate Review PO Pipeline Ops POA Period of Activity POC Proof of Concept POP Program Operating Plan PORR Preliminary Observatory Requirements Review PPD Protoplanetary and Planetary Debris PPDDP Protoplanetary and Planetary Debris Disks Program PPIC Payload and PCS Interface Card PR/TSA Pointing Requirements/TMOD Support Agreement Pres Pressure PRF Point Response Function PRI Pointing Ready Indicator PROM Programmable Read Only Memory PRZ Pointing Recovery Zone PS Power Supply PSBA Photon Shutter Blade Assembly (CTA) PSD Power Spectral Density PSDA Photon Shutter Drive Assembly PSF Point Spread Function PSLA Project Service Level Agreement PSM Photon Shutter Mechanism PSSC Point Source Sensitivity - Continuum PSSL Point Source Sensitivity - Line PST Point Source Transmission or Pacific Standard Time PU Peak Up PUI Peak Up Imaging PV Performance Verification PVDC Prop Value Driver Card PVL Parameter Value Language PWBs Printed Wiring Boards # Q QA Quality Analysis / Quality Assurance QC Quality Check QCI Quality Conformance Inspection QE Quantum Efficiency QQC Quality, Quantity and Continuity QQCL Quality, Quantity, Continuity, and Latency QWI Quality Work Instruction # R RA Right Ascension RAM Random Access Memory RCS Reaction Control System RDM Requirements Development Manager RDP Raw Data Product RF Radio Frequency RFA Request for Action RFC Radio Frequency Console RFS Registered File System RMI Remote Method Invocation rms Root Mean Square ROC Reserved Observation Catalog RPC Remote Power Controller RPE Responsible Product Engineer RPM Revolutions Per Minute RSA Research Support Agreements RSOE Realtime Sequence of Events RT Realtime RTD Resistance Temperature Device RTR Router RTTCs Regional Technology Transfer Centers RW Reaction Wheel RWA Reaction Wheel Assembly Rx Receive # S S&MO Science & Mission Operations S/C Spacecraft S/N Signal to Noise S/W Software SAM Structures and Mechanisms SAO Smithsonian Astrophysical Observatory SAR Science Archive Retrieval SAS Solar Array Simulator SASF Spacecraft Activity Sequence File SATF Spacecraft Activity Type File SBRC Santa Barbara Research Center SC Spacecraft SCA Sensor Chip Assembly SCD Source Control Documents SCET Spacecraft Event Time SCI Slew Complete Indicator SCLK Spacecraft Clock SCLKSCET Spacecraft Clock / Spacecraft Event Time SCMF Spacecraft Command Message File SCP Single Conductor Power Cable SCR Schedule Change Request SCS Single Conductor Signal Cable SDD System Description Document (for SI) SDM Science Data Management SDSS Sloan Digital Sky Survey SDST Small Deep Space Transponder SDT System Design Team SE System Engineer SEB Single Event Burnout SECO Second Engine Cutoff SED Spectral Energy Distribution / Special Engineering Data SEE Single Event Effects SEIT System Engineering, Integration and Test SEL Single Event Latchup SENS-PET Sensitivity Performance Estimation Tool SEP Single Event Phenomenon SEQGEN Sequence Generation SER Spacecraft Engineering Request / System Engineering Report SESPD Space and Earth Science Programs Directorate SEU Single Event Upset SF Short Form SFOICD Space/Flight Operations Interface Control Document SFOS Space Flight Operations Schedule SH Short-High SI Science Instrument Si:As Arsenic-doped Silicon Si:Sb Antimony-doped Silicon SID Selected Item Drawing SIE Sequence Integration Engineer SIM Simulation System SIMBAD Set of Identifications, Measurements, and Bibliography for Astronomical Data SINDRA Systems Improved Numerical Differencing Analyses SINGS Spitzer Infrared Nearby Galaxies Survey SIRO Shuttle Infrared Observatory SIRPASS Spitzer Infrared Planning and Scheduling System SIRTF Space Infrared Telescope Facility SIS Science Instrument Services / Software Interface Specification SIST Science Instrument Services Team SIT System Integration and Test SL Short-Low SLC Space Launch Complex SLINC Software tool which converts mnemonics to SCMF SLO Second-Look Observation SM Secondary Mirror SMART Spectroscopy Modeling Analysis and Reduction Tool SMF Spacecraft Model File SMS Structure and Mechanics Subsystem SNR Signal to Noise Ratio SOAS Science Operations Application Server SOC Spitzer Oversight Committee / State of Change SODB Science Operations Database SOE Sequence of Events SOFIA Stratospheric Observatory for Infrared Astronomy SOM Spitzer Observer's Manual SOMO Space Operations Management Office SORD Science Operations Requirements Document SOS Science Operations System SOW Statement of Work SOWG Science Operations Working Group SPDB Science Planning Database SPE Static Phase Error SPEC-PET Spectroscopy Performance Estimation Tool SPF Single Point Failure SPICE Spitzer IRS (Infrared Spectrograph) Custom Extraction / Spacecraft, Pointing, Instrument, Calibration, Engineering Files SPK Spacecraft/Planet Kernel SPO Spitzer Project Office SPOT Spitzer Planning Observations Tool SPOTIER Spitzer Planning Observations Tool (SPOT) Instrument Engineering Request (previously Expeditor) SPS Selected Process Specification SQA Software Quality Assurance SQL Structured Query Language SR Service Request SRAM Static Random Access Memory SRD System Requirements Document ; Science Requirements Document SRM Solid Rocket Motor SRR System Requirements/Release Review SRS Short Range Scheduling / Software Requirements Specification SSA Spacecraft Support Area SSC Spitzer Science Center / (previously SIRTF Science Center) SSC-OC Spitzer Science Center Oversight Committee SSF Spacecraft Sequence File SSM Solid State Memory SSO Solar System Object/Observations SSPA Solid State Power Amplifier SSR Solid State Recorder SSRD Spacecraft System Requirements Document ST/IRU Star Tracker/Inertial Reference Unit ST Star Tracker STA Star Tracker Assembly STAR-PET Stellar (Flux Estimator) Performance Estimation Tool STARS Spitzer Transfer, Archive and Retrieval System STD Standard STE Special Test Equipment STL Spacecraft/Software Test Laboratory STS Short Term Scheduling or Sequence Translation Subsystem STScI Space Telescope Science Institute STTF SIRTF Telescope Test Facility SUP Science Users Panel / Spitzer Unified Process / Support SUR Sample Up the Ramp SUT Science User Tools SV Science Validation SVDIF Space Vehicle Date Interface SVES Space Vehicle Environmental Simulator SW Switch SWAS Submillimeter Wave Astronomy Satellite SWG Science Working Group SWIRE Spitzer Wide Area Infrared Survey # T T Temperature TA Telescope Assembly TAC Time Allocation Committee TAWS Test Anomoly Work Sheet TBD To Be Determined ; To Be Done TBR To be Resolved, Revised, Reviewed, or Released TBS To Be Supplied TC Temperature Controller TC&DM Telemetry Command & Data Management TCC Test Control Center TCMS Test Control and Monitoring System TCO Targeted Commercialization Office TCS Thermal Control System TDL Template Definition Language TDS Telemetry Delivery Subsystem TELCOM Telecommunications TFS The File System TGSS Task Group on Spitzer (SIRTF) and SOFIA TID Total Integrated Dose TIS Telemetry Input System Tlm Telemetry TMM Thermal Math Model TMOD Telecommunications and Mission Operations Directorate TMS Telecommunications and Mission Services ToO Target of Opportunity TOT Telemetry Output Tool TP Total Power TPF Telescope Pointing Frame / Terrestrial Planet Finder TPG Time Pattern Generator TPM Total Power Mode TPS Twisted Pair Shielded Cable TR Tuning Rate TRASYS Thermal Radiation Analysis System TRK Tracking Rate TST TMOD Support Team TTACS Test Telemetry and Command Subsystem TV/TB Thermal Vacuum/Thermal Balance Tx Transmit # U U/D Uplink/Downlink U/L Uplink UA University of Arizona UAI Use As Is UC User's Committee UCD User Controlled Data ULDL Uplink/Downlink ULIRG Ultraluminous Infrared Galaxy ULLE Uplink Loss Executive UR University of Rochester UTC Coordinated Universal Time # V V Voltage VC Virtual Channel VCS Vapor-Cooled Shield VIS Visibility VIT Variable Inductance Transducer VIVO Verification, Integration, Validation and Operations VLA Very Large Array VM Virtual Machine VME Versa Module Eurocard VML Virtual Machine Language VOCA Voice Operational Communications Assembly VRM Verification & Reporting Matrix VT Voltage-Temperature VTMT Voltage Temperature Margin Test # W WASS Wide Angle Sun Sensor WBS Work Breakdown Structure WCA Worst Case Analysis WCS World Coordinate System WE Warm Electronics WEA Warm Electronics Assembly WFPC2 Wide Field/Planetary Camera 2 WFE Wavelength Front Error (CTA) WG Working Group WI Weather Index WIRE Wide-field Infrared Explorer WLAS Weblogic Application Server WRT with respect to WS Workstation WTS Waveguide Transfer Switch # X # Y YSO Young Stellar Object # Z