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Scientific & Educational >> Astronomy Abbreviations

Look through 3189 acronyms and abbreviations related to Astronomy:

• IMHO — In My Humble Opinion
• LAN — Local Area Network
• URL — Universal Resource Locator
• N/A — Not Applicable
• ASAP — As Soon As Possible (pronounced AY-sap)
• ETA — Estimated Time of Arrival
• HIV — Human Immunodeficiency Virus I
• ANSI — American National Standards Institute, Inc.
• PPNE — Proto-Planetary Bebulae
• MADOO — Madras Observatory Astronomical Observations
• BTW — By The Way
• PNX — Pulsar Network Exchange
• FTP — File Transfer Protocol
• ROM — Read-Only Memory
• CPU — Central Processing Unit
• IP — Internet Protocol
• PPM — parts per million
• LASER — Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
• COB — close of business (End of duty day)
• CRT — Cathode Ray Tube (type of TV)
• MM — Millimeter
• FIFO — First In, First Out
• FAQ — Frequently Asked Questions (sometimes Pronounced Fak)
• ASCII — American National Standard Code for Information Interchange
• MOU — Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
• R&D — Research & Development
• A — Ampere
• QC — Quality Control
• MTBF — Mean Time Before Failure
• AFAIK — As Far As I Know
• HIPAA — Health Insurance Portability and Accountability Act of 1996
• WHO — World Health Organization
• MRI — Magnetic Resonance Imaging
• A&AT — Astronomical and Astrophysical Transactions
• RF — Radio Frequency
• ISO — International Organization for Standardization
• ICD — Interface Control Document
• LUNNO — Lunar Upper Navigation Nacelle Orb
• RFP — Request For Proposal
• BTU — British Thermal Unit
• DEC — Digital Equipment Corporation
• CY — Calendar Year
• TBD — To Be Determined
• EU — European Union (1994; formerly referred to as the EEC or EC)
• GPS — Global Positioning System (ex-NAVSTAR)
• MRB — Material Review Board
• WAXD — Wide-Angle X-Ray Diffraction
• RPM — Revolutions Per Minute, (Rotations Per Minute)
• ROM — Rough Order of Magnitude
• WWW — World Wide Web

• QA — Center for Quality Assurance in International Education
• DOD — United States Department of Defense
• ASTM — American Society for Testing and Materials (Philadelphia, Pennsylvania)
• O&M — Operation and Maintenance
• MOA — Memorandum Of Agreement
• FY — Fiscal Year
• S/N — Serial Number
• ADP — Automated Data Processing
• WAN — Wide Area Network
• FYI — For Your Information
• P&SS — Planetary and Space Science
• EEO — Equal Employment Opportunity
• MIS — Management Information System (OSHA)
• CDR — Critical Design Review
• SOW — Statement Of Work
• EST — Eastern Standard Time
• FDA — Food Drug Administration
• PDR — Preliminary Design Review
• R&QA — Reliability & Quality Assurance
• RAM — random-access memory
• CD — Compact Disc
• E&PSL — Earth and Planetary Science Letters
• KG — Kilogram
• EOF — End Of File
• AIAA — American Institute of Aeronautics and Astronautics, Inc.
• DOT — Department of Transport
• A&ARV — Astronomy and Astrophysics Review
• ESA — European Space Agency
• PIFOV — Planet In Field Of View
• AMA — American Medical Association
• AARP — American Association of Retired Persons
• LED — law enforcement desk; light emitting diode
• NSF — National Sanitation Foundation
• DOE — United States Department of Energy (government)
• JAAVSO — Journal of the American Association of Variable Star Observers
• CBO — Congressional Budget Office
• CV — Curriculum Vitae
• CFR — Code of Federal Regulations
• HZ — cycles per second (hertz)
• FFT — Fast Fourier Transform
• QJRAS — Quarterly Journal of the Royal Astronomical Society
• M&PS — Meteoritics and Planetary Science
• B-V — Binary - Variable star
• WASOA — Washburn Observatory Astrophysics
• JASEG — Journal of the Astronomical Society of Egypt
• VHF — Very High Frequency
• ☿ — Mercury
• UFO — Unidentified Flying Object
• NFS — Network File System
• OMB — Office of Management and Budget (U.S.)

• CCB — Configuration Control Board
• JALPO — Journal of the Association of Lunar & Planetary Observers
• DAOAR — Dominion Astrophysical Observatory Annual Report
• CM — Centimeter
• FOV — Field Of View (satellite)
• HMO — Health Maintenance Organization
• ROI — Return on Investment
• NIH — NATIONAL INSTITUTE OF HEALTH
• MHZ — Megahertz (Megacycles Per Second)
• NIST — National Institute of Standards and Technology
• SAAOC — South African Astronomical Observatory Circular
• ZAND — Z ANDromedae
• BAICZ — Bulletin of the Astronomical Institutes of Czechoslovakia
• GATT — General Agreement on Tariffs and Trade (government)
• NM — Nanometer
• EOY — End-Of-Year
• XEUS — X-Ray Evolving Universe Spectroscopy Mission
• F&CRE — Flower and Cook Observatory Reprints
• JAPAS — Journal of Astrophysics and Astronomy Supplement
• AHRQ — Agency for Health, Research, and Quality
• P-E — Perkin-Elmer Corporation
• RPM — Resale Price Maintenance. The UK Net Book Agreement, as was. Means by which retail prices are controlled by primary suppliers. (Alternatively, Revolutions Per Minute, as in engine speed and 78, 33 and 45 records. In years to come how many people will know
• NAS — United States National Academy of Sciences
• IR — Infrared
• UHF — Ultra High Frequency (300-3000 MHz; 1m-10cm)
• PPO — Preferred provider organization
• P/SOS — Payload/Spacecraft Operations Simulator
• PT — Physical Therapy
• VATOP — Vatican Observatory Publications
• SDD — Software Design Document
• E-ELT — European Extremely Large Telescope
• BPS — bits per second
• DC — Direct Current
• PALLO — Publications of the Allegheny Observatory of the University of Pittsburgh
• ZEPLIN — ZonEd Proportional scintillation in LIquid Noble gases
• UV — Ultraviolet (Light)
• SAR — Search And Rescue
• OS — Operating System
• HQ — Headquarters (HDQ Preferred)
• NCCLS — National Committee for Clinical Laboratory Standards
• CRC — Contrôle de Redondance Cyclique (French: Cyclic Redundancy Check)
• I/O — Input/Output
• CSA — Canadian Space Agency
• MB — Megabyte
• GMT — Greenwich Mean Time (Zulu)
• HR — HUMAN RESOURCES
• PABEI — Progress in Astronomy
• BOD — Board of Directors (Budget)
• SADE-1 — Solar Array Deploy Electronics-11
• K — Kilo-

• AAAS — American Association for the Advancement of Science
• BER — Bit-Error Rate
• USGS — United States Geological Survey (DOI)
• APU — Auxiliary Power Unit
• CRS — Congressional Research Service
• UTC — Coordinated Universal Time
• SQA — Software Quality Assurance
• NOAA — National Oceanic and Atmospheric Administration (US)
• ROI — Region of Interest
• AA&AA — Astronomy and Astrophysics Abstracts Heidelberg
• JAPOA — Japan Amateur Photoelectric Observers Association
• AHU — Air Handling Unit
• EAPSNET — East-Asian Planet Search Network
• NHLBI — National Heart, Lung, and Blood Institute
• DBMS — Data Base Management System
• PSI — Pounds Per Square Inch (Static Pressure)
• M — Meter
• TLA — Three Letter Abbreviation
• LAMOST — Large sky Area Multi-Object fiber Spectroscopic Telescope
• NAM — National Association of Manufacturers
• SCSI — Small Computer System Interface
• GMP — Good Manufacturing Practice
• CASE — computer-automated software engineering
• GIF — Graphic Interchange Format
• GAO — Government Accountability Office [formerly the General Accounting Office]
• RISC — Reduced Instruction Set Computer
• COTS — Commercial Off the Shelf Software
• KHZ — kilohertz (1000 cycles per second)
• PADEU — Publications of the Astronomy Deparment of the Eotvos Lorand University
• MPH — Miles Per Hour
• PM — Project Manager
• LOS — Line Of Sight
• IIRC — If I Recall Correctly
• DMA — direct memory access (computer term)
• MADOB — Madras Observatory Observations
• HHS — Health and Human Services Department
• LAD-C — Large Area Debris Collector
• BTOK — Bulletin of the Tokyo Astronomical Observatory
• NEMA — National Electric Manufacturer's Association
• OSHA — Occupational Safety and Health Act (1970)
• CRO — Contract Research Organization
• CM — Configuration Management
• NEC — National Electrical Code
• EDT — Eastern Daylight Time
• STR — Software Test Report
• RSN — Real Soon Now [which may be a long time coming]
• TV — Television
• RFI — Radio Frequency Interference
• WMO — World Meteorological Organization (ICSU)
• FTC — Federal Trade Commission (U.S.)

• AAMC — American Association of Medical Colleges
• LANL — Los Alamos National Laboratory
• OAI — Official Action Indicated (serious Food & Drug Administration post-inspection classification)
• ROTFL — Roll On The Floor Laughing
• DDL — Data Definition Language
• DMSP — Defense Meteorological Satellite Program (U.S.)
• IEEE — Institute of Electrical and Electronic Engineers, Inc.
• RMS — root mean square (preferred over "RMS")
• BCD — Binary-Coded Decimal
• COSPAR — Committee on Space Research (ICSU)
• POS — Point of Service Plan
• AAS — American Astronomical Society
• CG — Center of Gravity (DXS)
• FORTRAN — FORmula TRANslation (a computer language)
• HIV — Hair Is Vanishing. Amusing alternative interpretation (thanks EP) contrasting with the seriousness of the more usual meaning of Human Immunodeficiency Virus.HIVIHusband Is Village Idiot. (ODSA) Classic nurses' shorthand.
• NIST — National Institute of Standards & Technology (US)
• EOL — End Of Line
• KM — Kilometer (1,000 meters)
• UPS — Uninterruptible Power Supply
• VLF — Very Low Frequency
• CCD — Charge Coupled Device - a device for the movement of electrical charge.
• LEO — Low Earth Orbit (satellite communications)
• AAMI — Association for the Advancement of Medical Instrumentation
• USAF — United States Air Force
• AHA — American Hospital Association
• VBR — Variable Bit Rate (ATM)
• IFOV — Instantaneous Field Of View
• NIOSH — National Institute for Occupational Safety and Health
• PCM — Pulse-Code Modulation
• OPD — Outpatient Department
• NBS — National Bureau of Standards (US)
• HCFA — Health Care Financing Administration
• NRL — Naval Research Laboratory
• ADS — Astrophysics Data System
• BNSC — British National Space Centre
• FTA — Fault Tree Analysis
• AU — Astronomical Unit
• CEN — Committee European de Normalisation
• IRB — Institutional Review Board
• BPI — bits per inch
• ISS — International Space Station
• FTE — Full-Time Employee
• ELV — Expendable Launch Vehicle
• DME — Durable Medical Equipment
• TANSTAAFL — There Ain't No Such Thing As A Free Lunch (coined By Author Robert A. Heinlein In His The Moon Is A Harsh Mistress)
• HF — High Frequency
• CRF — Case Report Form
• ADC — Analog-Digital Converter
• LTE — Local Thermodynamic Equilibrium
• CPI — characters per inch

• GE — General Electric American Communications Inc.
• BMA — British Medical Association
• DD — Deputy Director
• SIG — Special Interest Group
• HTH — Hope This Helps. Email abbreviation when replying to requests. Potentially counter-productive if the recipient doesn't understand what it means...
• NAFTA — North American Free Trade Agreement
• ARC — Ames Research Center (NASA)
• CCTV — Closed Circuit Television
• DCC — Document Control Center
• NSA — National Security Agency
• STS — Space Transportation System
• CDRH — Center for Devices and Radiological Health (Food & Drug Administration)
• EC — European Community
• CPI — Continuous Process Improvement
• IEC — International Electrotechnical Commission
• JAXA — Japan Aerospace Exploration Agency
• MIT — Massachusetts Institute of Technology (U.S.)
• SNR — Signal-to-Noise Ratio
• FAC — Facilities
• KB — Kilobyte: One thousand and twenty-four bytes kbps kilo bit per second
• SF — Science Fiction
• NRC — National Response Center
• DSN — Deep Space Network - network of large antennas and communication facilities.
• JPL — Jet Propulsion Laboratory (California Institute of Technology) (NASA)
• GHZ — Gigahertz
• NASDA — National Space Development Agency of Japan
• AMU — Atomic Mass Unit
• AE — Adverse Event
• ASM — American Society for Microbiology
• WG — Working Group
• SISEX — Shuttle Imaging Spectrometer Experiment
• AGU — American Geophysical Union
• ISAS — Institute of Space and Astronautical Sciences (Japan)
• DIST — Distance
• HP — Hewlett Packard's
• ACRIM — Active Cavity Radiometer Irradiance Monitor (EOS)
• A&A — Astronomy and Astrophysics
• JAMA — Journal of the American Medical Association
• NSO — National Solar Observatory
• SSI — Space Studies Institute
• CKSM — checksum
• LOE — Level Of Effort
• ANOLL — Annals of the Private Observatory of Lucien Libert
• A&G — Astronomy and Geophysics
• DRS — Data Relay Satellite
• ACS — American College of Surgeons
• DOMSAT — Domestic Communications Satellite System
• MS — Millisecond
• GO — General Observer
• LBNL — Lawrence Berkeley National Laboratory (US)

• JSC — Johnson Space Center (Houston, TX)
• ASQ — Alpha System Qualification
• ADA&A — Advances in Astronomy and Astrophysics
• A/N — Alphanumeric
• ETLA — Extended Three Letter Acronym
• CFA — Harvard-Smithsonian Center for Astrophysics, USA
• HV — High Voltage
• TAG — Technical Advisory Group for Biological Control Agents of Weeds
• AOCS — Attitude and Orbit Control System
• AJ — Astronomical Journal
• PHS — Public Health Service (U.S.)
• ABBOO — Abbadia Observatory Observations
• COBE — Cosmic Background Explorer Satellite (NASA)
• ASI — Agenzia Spaziale Italiana
• ADF — Astrophysics Data Facility
• RADAR — RAdio Detection And Ranging
• PR — Public Relations
• COBRAS-SAMBA — Cosmic Background Radiation Anisotropy Satellite / Satellite for Measurement of Background Anisotrop
• BAE — British Aerospace Systems, LTD
• OSO — Orbiting Solar Observatory
• VMS — Virtual Memory System
• NASA — National Aeronautics and Space Administration (US)
• RGOO — Royal Greenwich Observatory Observations
• SIR — Shuttle Imaging Radar
• NSSDC — National Space Science Data Center (Greenbelt, MD)
• CW — Clockwise
• SPR — Software Problem Report
• USP — United States Pharmacopeia
• GSFC — Goddard Space Flight Center (Greenbelt, MD)
• F — Degrees Fahrenheit
• ASTHE — Astronomical Herald
• CSTC — Consolidated Space Test Center
• AURA — Association of Universities for Research in Astronomy, Inc.
• MMS — Module Management System
• MCC — Mission Control Center (JSC)
• N — Nitrogen
• SAR — synthetic aperture radar (satellite)
• CITECH — Center for Information on Technology in Healthcare
• N — Newton
• NDA — New Drug Application
• SERC — Science and Engineering Research Council
• APO — Apache Point Observatory
• CCAFS — Cape Canaveral Air Force Station, an air force base in Florida where NASA launches satellites from.
• APL — Applied Physics Laboratory (at Johns Hopkins)
• FAT — File Allocation Table
• ID — IDentifier
• RSA — Russian Space Agency
• NABR — National Association for Biomedical Research
• VLSI — Very-Large-Scale Integration
• ERBS — Earth Radiation Budget Satellite

• IPAC — Infrared Processing and Analysis Center
• AOA — Angle Of Attack
• AAO — Anglo-Australian Observatory
• RAS — Royal Astronomical Society
• COMSP — Commercial Space
• NAI — No Action Indicated (Most Favorable Food & Drug Administration Post-inspection Classification)
• AXAF — Advanced X-Ray Astrophysics Facility
• LARC — Langley Research Center (NASA)
• HOPPS — Hospital Outpatient Prospective Payment System
• IAU — International Astronomical Union
• ISRO — Indian Space Research Organisation
• ADC — Astronomical Data Center
• GOES — Geostationary Operational Environmental Satellite
• FTL — Faster Than Light
• ACE — Advanced Composition Explorer
• DDCMP — Digital Data Communications Message Protocol
• ADIL — Astronomy Data Image Library
• PAH — Polycyclic Aromatic Hydrocarbon
• APJS — Astrophysical Journal Supplement Series
• MSFC — Marshall Space Flight Center (Huntsville AL)
• CSC — Collection of Small Companies. Alternative interpretation (apparently used by staff) of the CSC company name, which properly stands for Computer Sciences Corporation. The 'Collection of Small Companies' version reflects CSC's operatianal structure, which
• K — Kilogram
• LCC — Launch Control Center (KSC)
• MASER — microwave amplification by stimulated emission of radiation
• RCS — Radar Cross Section
• Z — Zulu (Greenwich mean time)
• IPC — Interprocess Communication
• LOX — Liquid Oxygen
• EUV — Extreme Ultraviolet Vertical
• EUVE — Extreme Ultraviolet Explorer (NASA Satellite)
• PROM — Programmable Read-Only Memory
• CASJ — Canadian Aeronautics and Space Journal
• ONR — Office of Naval Research (U.S.)
• S/W — Software
• D — Director
• M&P — Materials and Processes
• NASP — National Aerospace Plane
• APS — American Physical Society
• KSC — John F. Kennedy Space Center
• COCAM — Contributions from the Cambridge Observatory England
• EPS — Encapsulated Postscript
• ADS — Astrophysics Data Service
• CAP — College of American Pathologists
• ESTEC — European Space Research and Technology Centre
• JILA — Joint Institute for Laboratory Astrophysics
• TARDIS — Time And Relative Dimensions In Space. Dr Who's company car, so to speak. I can confirm that it is 'Dimensions' not 'Dimension'. This begs the follow-up question as to whether the Dimensions are relative to each other or to time, or to both, or to somethi
• CDC — Centers for Disease Control
• DAR — Defense Acquisition Regulation
• K — Kelvin (absolute temperature scale)
• CARA — Center for Astrophysical Research in Antarctica

• INS — Inertial Navigation System
• PPARC — Particle Physics and Astronomy Research Council
• AG — Astronomische Gesellschaft
• SARA — Society of Amateur Radio Astronomers
• SN — Space Network
• LPL — Lunar and Planetary Laboratory
• CMS — Correctional Medical Services
• AZ — Azimuth
• CO — Contracting Officer
• PHRMA — Pharmaceutical Research and Manufacturers of America (formerly PMA, Pharmaceutical Manufacturers Association)
• ATO — Abort To Orbit
• EIA — Extended Interaction Amplifier
• ADSPR — Advances in Space Research
• BASBR — Bulletin of the Astronomical Society of Brazil
• BAA — British Astronomical Association
• STSCI — Space Telescope Science Institute
• XRD — X-Ray Diffraction
• ASCA — Advanced Satellite for Cosmology & Astrophysics
• ALPO — Association of Lunar and Planetary Observers
• MMI — Man-Machine Interface
• USRA — Universities Space Research Association
• HST — Hubble Space Telescope
• EOS — Earth Observing System (U.S.)
• FOS — Faint Object Spectrograph
• DSMB — Data Safety Monitoring Board
• CEMDA — Celestial Mechanics and Dynamical Astronomy
• DOH — Department of Health (various countries)
• MECO — Main Engine Cutoff
• ISO 14155 — Current Widely Accepted Standard
• ADCBU — Astronomical Data Center Bulletin
• GLP — Good Laboratory Practice
• SLAR — Side-Looking Airborne Radar
• ALS — Advanced Launch System
• CASS — Center for Advanced Space Studies
• UCL — University College London
• BAO — Beijing Astronomical Observatory
• SEDS — Students for the Exploration and Development of Space
• ABHI — Association of British Health-Care Industries
• AIRCO — Air et Cosmos
• NOAO — National Optical Astronomy Observatories (Tucson, AZ)
• SO/SI — space operations and scientific investigation
• CHSAJ — Chinese Society of Astronautics Journal
• NCI — National Cancer Institute, USA
• DOY — Day of Year
• GCP — Good Clinical Practice
• AMPS — Atmospheric Magnetospheric Plasma System
• ISF — Industrial Space Facility
• SDR — System Design Review
• APHA — American Pharmaceutical Association
• COROE — Communications from the Royal Observatory Edinburgh

• EVA — Extra-Vehicular Activity
• TIFF — Tag Image File Format
• NCAR — National Center for Atmospheric Research (US)
• DSCS — U.S. Defense Satellite Communications System
• LSF — Line Spread Function
• TAC — Telescope Allocation Committee
• CARA — California Association for Research in Astronomy
• CDT — Connaissance Des Temps
• ISN — International Supernovae Network
• RTG — Radioisotope Thermoelectric Generator
• ATLAS — ACTIVITIES Atmospheric Laboratory for Applications and Science
• CHIME — College of Healthcare Information Management Executives
• ISU — International Space University
• ERS — Earth Resources Satellite
• CHARA — Center for High Angular Resolution Astronomy
• COWRO — Contributions from the Wroclaw Astronomical Observatory
• USNO — United States Naval Observatory
• BLOB — Binary Large Object
• CSA — Canadian Standards Association (like UL)
• TDRSS — Tracking and Data Relay Satellite System
• FITS — Flexible Image Transport System
• SME — Solar Mesosphere Explorer
• PDR — Physician’s Desk Reference
• ARC — Astrophysical Research Consortium
• ISO — Infrared Space Observatory
• WET — Whole Earth Telescope
• ESO — European Southern Observatory
• AT — Acceptance Test
• ORIG — Origin
• BASD — Ball Aerospace Systems Division
• UT — Universal Time
• OIG — Office of Inspector General
• APH — Astroparticle Physics
• ACICH — Astronomical Circular
• RVU — Relative Value Unit
• NORAD — North American Air Defense (Command)
• DYERE — Dyer Observatory Reprints
• ASA — Astronomical Society Of The Atlantic
• BSI — British Standards Institution
• FWHM — Full Width at Half Maximum
• DUNRE — Dunsink Observatory Reprints
• TOMS — Total Ozone Mapping Spectrometer (satellite Instrument)
• ADEPS — Advances in Earth and Planetary Sciences
• CIT — California Institute of Technology (Pasadena, CA)
• CLMA — Clinical Laboratory Management Association
• MITI — Ministry of International Trade & Industry (Japan)
• IDE — Investigational Device Exemption
• LOR — Lunar Orbit Rendezvous
• R/T — Real Time
• HCIS — Health Care Information System

• CHSST — Chinese Space Science Technology
• ESRO — European Space Research Organisation
• AAVSO — American Association of Variable Star Observers
• ECS — Environmental Control System (Subsystem)
• VSOP — VLBI Space Observatory Program
• ASHP — American Society of Hospital Pharmacists
• WP — Work Package
• AFSCN — Air Force Space Command network
• BAAS — Bulletin of the American Astronomical Society
• ANEDI — Annals of the Royal Observatory, Edinburgh
• JRASC — Journal of the Royal Astronomical Society of Canada
• EAA — Encyclopedia of Astronomy and Astrophysics
• BHB — Black Hole Bang
• OSS — Office of Space Sciences
• MTPE — Mission To Planet Earth
• AFGWC — Air Force Global Weather Central (U.S.)
• VDU — Video Display Unit
• SIM — Simulator
• DIN — Deutsches Institut für Normung.
• CME — Coronal Mass Ejection (usually Sun)
• DAO — Dominion Astrophysical Observatory (Victoria, BC, Canada)
• AGB — Asymptotic Giant Branch
• SUNY — State Universityrsity of New York
• ANLOW — Annals of the Lowell Observatory
• ANS — Astro News Service
• ALEXIS — Array of Low Energy X-ray Imaging Sensors
• ADIS — Astrophysics Data and Information Services
• SAO — Smithsonian Astrophysical Observatory
• AEXPR — Astronomy Express
• SGF — SpaceGuard Foundation
• DMERC — Durable Medical Equipment Regional Carrier
• NEODYS — Near Earth Objects Dynamic Site
• IRSA — Infrared Science Archive
• CADC — Canadian Astronomy Data Centre
• MOSPO — Mobile Satellite Photometric Observatory
• LOI — Lunar Orbit Insertion
• ARISTOTELES — Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite
• AMS — American Meteor Society
• CDM — Cold Dark Matter
• CMP — Competitive Medical Plan
• NAOJ — National Astronomical Observatory of Japan
• ROSAT — Roentgen Satellite
• CHJSS — Chinese Journal of Space Science
• ANLUN — Annals of the Observatory of Lund
• SDI — Strategic Defense Initiative
• HIAA — Health Insurance Association of America
• ASC — Ambulatory Surgery Center
• NCC — Network Control Center (GSFC)
• BUBES — Bulletin of the University of Besancon Observatory
• ADEC — Astrophysics Data Centers Executive Council

• CPAF — Cost Plus Award Fee (Type of Contract)
• LMSS — Lunar Mapping and Survey System
• ICH — International Conference of Harmonization
• MNRAS — Monthly Notices of the Royal Astronomical Society
• SDIO — Strategic Defense Initiative Organization
• ALAMO — Automated Lunar and Meteor Observatory
• NIR — Near Infrared
• VDS — Vereinigung der Sternfreunde
• PDP — Postinsertion Deorbit Preparation
• LHEA — Laboratory for High Energy Astrophysics
• PHP — Planetary Horizontal Platform
• AREPS — Annual Review of Earth and Planetary Sciences
• AREP — Astronomy Reports
• SST — States Supersonic Transport
• COLPL — Communications of the Lunar and Planetary Laboratory
• ANCAP — Annals of the Cape Observatory
• ASTRA — Advanced Star Tracker
• RASC — Royal Astronomical Society of Canada
• VSOLJ — Variable Star Observers League in Japan
• CQGRS — Classical and Quantum Gravity Supplement
• DRG — Diagnosis-Related Groups
• ASPP — Atmospheric and Space Plasma Physics
• VVORE — Van Vleck Observatory Reprints
• DEACO — Dearborn Observatory Contributions
• LPI — Lunar and Planetary Institute
• E&S — Earth and Space
• IDL — Interactive Data Language
• SAS — Small Astronomy Satellite
• JAC — Joint Astronomy Centre
• IOTA — International Occultation Timing Association
• OSSE — Oriented Scintillation Spectrometer Experiment
• MEPAG — Mars Exploration Program Analysis Group
• ORROE — Occasional Reports of the Royal Observatory, Edinburgh
• SRD — Software Requirements Document
• JHIT — Joint Healthcare Information Technology Alliance
• DEC — Declination
• AREG — Astronomical Register
• WGPSN — Working Group for Planetary System Nomenclature
• AMIA — The American Medical Informatics Association
• FU — Flight Unit
• ESAJ — European Space Agency Journal
• CHJAA — Chinese Journal of Astronomy and Astrophysics
• DADS — Data Archive and Distribution System
• AUASS — Arab Union for Astronomy and Space Sciences
• IRAS — Infrared Astronomy Satellite
• JBAA — Journal of the British Astronomical Association
• GR — General Relativity
• SIDC — Sunspot Index Data Center
• ANDUD — Annals of the Dudley Observatory
• COKON — Commmunications of the Konkoly Observatory Hungary

• CQGRA — Classical and Quantum Gravity
• MMU — Manned Maneuvering Unit
• LPO — La Palma Observatory
• RECONS — Research Consortium on Nearby Stars
• TIROS — Television InfraRed Observation Satellite (POES)
• ALPOJ — Association of Lunar and Planetary Observers Journal
• NRAO — National Radio Astronomy Observatory (Greenbank, WV)
• TEM — Transverse Electromagnetic
• BASI — Bulletin of the Astronomical Society of India
• PAAS — Publications of the American Astronomical Society
• JOP — Jupiter Orbiter Probe
• MSSSO — Mount Stromlo and Siding Spring Observatories
• ANHAR — Annals of Harvard College Observatory
• ISTEC — International Small Telescope Cooperative
• ASMT — American Society for Medical Technology
• MSSS — Maui Space Surveillance Site
• APJ — Astrophysical Journal
• JEM — Japanese Experiment Module
• DUNOP — Dunsink Observatory Publications
• JASS — Journal of Astronomy and Space Sciences
• BIO — Biotechnology Industry Organization
• ARMOL — Armagh Observatory Leaflet
• D — Diameter
• GHTF — Global Harmonization Task Force
• ND — NASA Document
• FRR — Flight Readiness Review
• CEMEC — Celestial Mechanics
• EDO — Extended Duration Orbiter
• SBNC — Small Bodies Names Committee
• ASTL — Astronomy Letters
• DFRC — Dryden Flight Research Center
• NEOIC — Near Earth Object Information Center
• CIUO — Circular of the Union Observatory Johannesburg
• MDD — Medical Device Directive
• JSAR — Journal of Space Astronomy Research
• WAIS — Wide Area Information Server
• CRB — Change Review Board
• EVN — European VLBI Network
• ESOAR — European Southern Observatory Annual Reports
• FAR — Flight Acceptance Review
• OSSA — Office of Space Sciences and Applications
• MGMA — Medical Group Management Association
• NAS — Norsk Astronomisk Selskap
• ECRI — Emergency Care Research Institute
• FDLI — Food and Drug Law Institute
• CIBAA — Circular of the British Astronomical Association
• OPAG — Outer Planets Assessment Group
• IUS — Inertial UPper Stage (was Interim UPper Stage)
• FSK — Frequency Shift Keying
• CSBN — Committee for Small-Body Nomenclature

• TEP — Transits of Extrasolar Planets
• ONRAS — Occasional Notes of the Royal Astronomical Society
• ASPRV — Astrophysics and Space Physics Reviews
• S/N — Signal-to-Noise ratio
• KPNO — Kitt Peak National Observatory (Tucson, AZ)
• VBO — Vainu Bappu Observatory
• PHASP — Physics and Astrophysics from Spacelab
• PASAU — Proceedings of the Astronomical Society of Australia
• WEBT — Whole Earth Blazar Telescope
• AO — announcement of opportunity
• ISY — International Space Year (1992)
• TIE — Telescopes in Education
• FHST — fixed-head star tracker
• ASP — Astronomical Society of the Pacific
• NAMN — North American Meteor Network
• TPS — Thermal Protection System
• SAAO — South African Astronomical Observatory
• COBRN — Contributions of the Public Observatory and Planetarium in Brno
• PASA — Publications of the Astronomical Society of Australia
• COBOS — Contributions from the Bosscha Observervatory
• UARS — Upper Atmosphere Research Satellite (NASA)
• PDUFA — Prescription Drug User Fee Act (1992, U.S.)
• ESDAC — European Space Data Center
• CTE — Charge Transfer Efficiency
• CFC — Chloroflourocarbon
• CRPL — Cosmic Ray Physics Laboratory
• PROE — Publications of the Royal Observatory of Edinburgh
• AFSD — Air Force Space Division
• QBO — Quasi-biennial Oscillation (atm.)
• SSBUV — shuttle solar backscatter ultraviolet (radiometer)
• SVD — Singular Value Decomposition
• AUJPA — Australian Journal of Physics Astrophysical Supplement
• OBC — Onboard Computer
• SSTO — Single-Stage-to-Orbit
• JAHH — Journal of Astronomical History and Heritage
• NRT — near real time
• COSKA — Contributions of the Astronomical Observatory Skalnate Pleso
• DUROO — Durham Observatory Observations
• NASAL — NASA Circular Letter
• CHIPS — Cosmic Hot Interstellar Plasma Spectrometer
• ESOSR — European Southern Observatory Scientific Report
• COARM — Contributions from the Armagh Observatory
• ESOSP — European Southern Observatory Scientific Preprints
• UL — Underwriters Laboratory
• ST — Space Telescope
• BKOAS — Bulletin of Korean Astronomical Society
• CBER — Center for Biologics Evaluation and Research
• RA — Research Assistant
• PCINO — Publications of the Cincinnati Observatory
• MWOAR — Mount Wilson Observatory Annual Report

• OVS — Observation of Variable Stars
• JGR — Journal of Geophysical Research
• IUEDAC — IUE satellite Data Analysis Center
• S&T — Sky & Telescope
• PAM — Payload Assist Module
• BAT — Burst Alert Telescope
• ASRM — Advanced Solid Rocket Motor
• MECO — Magnetospheric Eternally Collapsing Object
• IDTF — Independent Diagnostic Testing Facility
• SLC — Space Launch Complex
• NASAC — NASA Conference Publication
• AO — Adaptive Optics
• TAC — Time Allocation Committee
• ANDEA — Annales of the Dearborn Observatory
• TTA — Time to Apogee
• ANMN — Antarctic Meteorite Newsletter
• SZA — Solar Zenith Angle
• SPOT — Satellite Pour l'Observation de la Terre (France)
• CRARE — Cracow Observatory Reprints
• AACC — American Association for Clinical Chemists
• IUE — International Ultraviolet Explorer
• ICE — International Cometary Explorer
• RGO — Royal Greenwich Observatory
• PMUNO — Publications of the Munich Observatory
• ARCHS — Archaeoastronomy Supplement
• JBAS — Journal of the British Astronomical Society
• COVVO — Contributions of the Van Vleck Observatory
• MELOO — Melbourne Observatory Observations
• JAD — Journal of Astronomical Data
• PEPI — Physics of the Earth and Planetary Interiors
• CMA — Chemical Manufacturers Association
• MJD — Modified Julian Date
• POEM — Polar-Orbiting Earth Mission
• KCAO — Kumamoto Civil Astronomical Observatory
• PGLO — Publications of the Goethe Link Observatory
• IQSY — International Quiet Sun Year
• AMPS — Atmosphere, Magnetosphere & Plasmas in Space
• M&R — Maintenance and Refurbishment
• SPVW — Spaceview
• SPIE — The Society of Photo-optical Instrumentation Engineers
• NMI — Nautical Mile
• SCA — Shuttle Carrier Aircraft
• CCR — Cost-Charge Ratio
• PDS — Planetary Data System
• IPA — Individual Practice Association
• NASAR — NASA Reference Publication
• IU — Interface Unit
• JHA — Journal for the History of Astronomy
• ACRV — Assured Crew Return Vehicle
• ATV — Automated Transfer Vehicle

• DFRF — Dryden Flight Research Facility
• QSR — Quality System Regulation
• HEAO — High Energy Astronomy Observatory
• VAI — Voluntary Action Indicated (Food & Drug Administration postaudit inspection classification)
• ETR — Eastern Test Range (ESME Preferred)
• TM — Telemetry
• CHA&A — Chinese Astronomy and Astrophysics
• SPP — Solar Physics Payload
• S/C — Spacecraft
• CCAS — Cape Canaveral Air Station
• JKAS — Journal of Korean Astronomical Society
• NESSI — Near Earth Space Surveillance Initiative
• HRSA — U.S. Health Resources and Services Administration
• COLIC — Contributions of Lick Observatory
• PVVO — Publications of the Van Vleck Observatory
• MMDA — Michigan Medical Device Association
• MHW — Ministry of Health and Welfare
• PASJ — Publications of the Astronomical Society of Japan
• MCD — Minimum Cost Design
• EBCI — Eclipsing Binaries Circulars
• OPF — Orbiter Processing Facility
• NCSC — National Council of Senior Citizens
• COSRE — Cosmic Research
• IRAJ — Irish Astronomical Journal
• JCAP — Journal of Cosmology and Astro-Particle Physics
• GSC — Guide Star Catalog
• NAHIT — National Alliance for Health Information Technology
• MEM — Meteoroid Exposure Module
• OASH — Office of the Assistant Secretary for Health
• NIZRE — Nizamiah Observatory Reprints
• LICOB — Lick Observatory Bulletin
• SMDA — Safe Medical Devices Act (1990)
• RTLS — Return To Launch Site
• OTA — Optical Telescope Assembly
• FCPH — Fundamentals of Cosmic Physics
• HIS — Health Information Systems
• POMIC — Publications of Michigan Observatory
• OCC — Operations control center
• CAMRE — Cambridge Observatories Reprints
• DSS — Deep Space Station
• JANSC — Journal of Astronautical Sciences
• NIGMS — National Institute Of General Medical Sciences (NIH)
• CD-ROM — compact disc-read only memory
• PNAOJ — Publications of the National Astronomical Observatory of Japan
• SRON — Space Research Organization of the Netherlands
• EXA — Experimental Astronomy
• ARA&A — Annual Review of Astronomy and Astrophysics
• DSSN — Delta Scuti Star Newsletter
• JDSO — Journal of Double Star Observations
• SPMAR — Space Markets

• PDDO — Publications of the David Dunlap Observatory
• HRI — High Resolution Imager
• PMANO — Publications of the Manila Observatory
• COMAP — Comments on Astrophysics
• MIL-STD — Military Standard
• NASAS — NASA Special Publication
• NASM — National Air and Space Museum
• SDSS — Sloan Digital Sky Survey
• TUV — Technische Uberwachungs-Vereine
• FAHS — Federation of American Health Systems
• ESRIN — European Space Research Institute
• TOKRE — Tokyo Astronomical Observatory Reprints
• SPED — Space Education
• CON — Certificate Of Need
• PLICO — Publications of Lick Observatory
• NRAOR — National Radio Astronomy Observatory Reprints
• PSK — Phase Shift Key
• SUMS — Shuttle Upper Atmosphere Mass Spectrometer
• WRORE — Wroclaw Astronomical Observatory Reprints
• JBAN — Jodrell Bank Annals
• CODDO — Communications from the David Dunlap Observatory
• AOA — Abort Once Around (shuttle Abort Plan)
• DSP — Defense Support Program
• RSNA — The Radiological Society of North America, Inc.
• PBEIO — Publications of the Beijing Astronomical Observatory
• PDREO — Publications of the Dresden Observatory
• AACCS — Analytical Approach to Candidate Constellation Selection
• PPCAS — Publication of the Pomona College Astronomical Society
• PRCO — Publications of the Riverview College Observatory
• PRAES — Progress in Aerospace Sciences
• ASTD — Advanced Space Technology Division
• PERCO — Perkins Observatory Contributions
• MERIS — Medium Resolution Imaging Spectrometer
• INDA — Investigational New Drug Application
• ESOC — European Space Operations Center
• ASSU — Annual Scientific Supplement to Urania
• CEC — Commission of the European Communities ;
• DCT — Discrete Cosine Transformer
• USNOR — United States Naval Observatory Reports
• SEOS — Synchronous Earth Observation Satellite
• LBLRR — LBL Research Review
• COSSE — Cosmic Search Summer
• CV — Cataclysmic Variable
• BBF — Bursty Bulk Flow
• CASJQ — Canadian Aeronautics and Space Journal Quarter
• SOLSTICE — Solar Stellar Irradiance Comparison Experiment
• BCRAO — Bulletin Crimean Astrophysical Observatory
• SUSIM — Solar Ultraviolet Spectral Irradiance Monitor
• HIRA — Health Industry Representatives Association
• STICA — Space Technology Industrial and Commercial Applications

• PHA — Physics And Astronomy
• MOA — Microlensing Observations in Astrophysics
• MELAR — Melbourne Observatory Annual Report
• MOL — Manned Orbiting Laboratory
• ISEE — International Sun-Earth Explorer
• SI — Scientific Investigation
• LPS — Launch Processing System
• RNAOJ — Report of the National Astronomical Observatory of Japan
• RFNA — Red Fuming Nitric Acid
• DUDOR — Dudley Observatory Reports
• ADVAMED — Advanced Medical Technology Association
• RALPH — Reduction and Acquisition of Lunar Pulse Heights
• GRO — Gamma Ray Observatory (NASA)
• CM — Command Module
• NCOS — National Commission on Space
• COPER — Contributions of Perkins Observatory
• HIDA — Health Industry Distributors Association
• MMA — Minnesota Medical Association
• FIR — Far Infrared
• MMH — Monomethyl Hydrazine
• PSPRO — Publications of the Sproul Observatory
• SPART — Space Research and Technology
• MFPE — Mission from Planet Earth
• PYUNO — Publications of the Yunnan Observatory
• FS — Far Side
• M&P — Moon and Planets
• UPPOR — Uppsala Astronomical Observatory Reports
• ECCLS — European Committee on Clinical Laboratory Standards
• EEXSC — Earth and Extraterrestrial Sciences
• LRB — Liquid Rocket Booster
• PA — Popular Astronomy
• MEI — Medical Economic Index
• USPHS — United States Public Health Service
• COSTAR — Corrective Optics Space Telescope Axial Replacement
• PI — Principle Investigator
• SAA — South Atlantic Anomaly
• BPSK — binary phase shift keying
• JASAC — Japan Astronomical Study Association Circulars
• LEGRI — Low Energy Gamma-Ray Imager
• APOD — Astronomy Picture of the Day
• JAAME — Japanese Association for the Advancement of Medical Equipment
• GEO — Geosynchronous Earth Orbit
• RAD — Radiant
• MOS — Metal Oxide Semiconductor (FET Devices)
• IAPM — International Association of Medical Prosthesis Manufacturers
• CHPA — Consumer Healthcare Products Association
• JBRE — Jodrell Bank Reprints
• PLAST — Planetary Astronomy
• SPRBU — Space Research Bulgaria
• SPRRE — Sproul Observatory Reprints

• BBXRT — Broadband XRay Telescope
• EBS — Electron Bombarded Silicon
• CHI — California Healthcare Institute
• PYERO — Publications of the Yerkes Observatory
• STERE — Steward Observatory Reprints
• NRO — U.S. National Reconnaissance Office
• LASCO — Large Angle Spectrometric Coronograph
• IGY — International Geophysical Year (1 July 1957 - 31 December 1958)
• SERAJ — Serbian Astronomical Journal
• APC — Ambulatory Payment Class
• AMANDA — Antarctic Muon And Neutrino Detector Array
• RA — Regulatory Affairs
• TECRV — Technology Review
• COASP — Comments on Astrophysics and Space Physics
• B/W — Black and White
• TDRS — Tracking and Data Relay Satellites
• ASCRS — American Society of Cataract and Refractive Surgery's
• PRO — Professional Review Organization
• CFIT — Controlled Flight into Terrain
• NSI — NASA Science Internet
• JHAS — Journal for the History of Astronomy Supplement
• HFMA — Healthcare Financial Management Association
• OAP — Odessa Astronomical Publications
• UPPAN — Uppsala Astronomical Observatory Annals
• WFC — Wide-Field Camera
• PWASO — Publications of the Washburn Observatory
• DOAMS — distant-object attitude-measuring system
• JIMO — Journal of the International Meteor Organization
• SPAN — Space Physics Analysis Network
• SOPH — Solar Physics
• D — Directive
• STSKY — Star Sky
• JFMDA — Japan Federation of Medical Device Associations
• MIAA — Medical Industry Association of Australia
• PPRC — Physician Payment Review Commission
• WFF — Wallops Flight Facility
• DSMA — Division of Small Manufacturers Assistance
• NEWAR — New Astronomy Review
• MDR — Medical Device Register
• USNOC — United States Naval Observatory Circulars
• APJL — Astrophysical Journal Letters
• LR — Long Radius
• PROPAC — Prospective Payment Assessment Commission
• HIB — Health Insurance Bureau (Japan)
• RA — Right Ascension
• ASH — American Society of Hematology's
• LSR — Local Standard of Rest
• HD — Hilary Duff
• ACMAN — Astronomical Contributions from the University of Manchester
• MASSMEDIC — Massachusetts Medical Device Industry Council

• CSG — Council of State Governments
• TTP — Time to Perigee
• EFCS — Earth-fixed coordinate system
• MDI — Michelson Doppler Imager
• IUEEN — IUE ESA Newsletter
• FIRSSE — Far Infrared Sky Survey Experiment
• RSO — Resident Space Object
• MDMA — Medical Device Manufacturers Association
• CDSF — Commercially Developed Space Facility
• PAB — Pharmaceutical Affairs Bureau (Japan)
• JASV — Journal of the Astronomical Society of Victoria Melbourne
• JET-X — Joint European Telescope for X-ray astronomy
• MOPH — Ministry of Public Health
• FF — Flat Field
• WSMR — White Sands Missile Range (whiz-murr)
• VAB — Vertical Assembly Building
• IUENN — IUE NASA Newsletter
• PV — photovoltaic (solar)
• RGOB — Royal Greenwich Observatory Bulletin
• MOTIF — Maui Optical Tracking and Identification Facility
• MTF — Modulation transfer function.
• ELT — Extremely Large Telescope
• STOMS — Space Telescope Observatory Management System
• WIMP — Weakly Interacting Massive Particle
• MEDEC — Medical Devices Canada
• SPAC — State Pharmaceutical Administration of China
• MSX — Midcourse Space Experiment
• SPWD — Space World
• ROAN — Royal Observatory Annals
• IRAJS — Irish Astronomical Journal Supplement
• FM — Flight Model
• IES — Institute of Environmental Sciences
• HIMSS — Healthcare Information and Management Systems Society
• LGA — Low Gain Antenna
• PVASO — Publications of the Vassar College Observatory
• VLA — Very Large Array
• ESPI — European Space Policy Institute
• ASCP — American Society for Clinical Pharmacology and Therapeutics
• ANS — Astronomical Netherlands Satellite
• NASPY — North American Society of Electro Physiology and Pacing
• ICD-9-CM — International Classification of Diseases, 9th Edition
• SYDOP — Sydney Observatory Papers
• IPEM — Institute of Physics and Engineering in Medicine
• LRSP — Living Reviews in Solar Physics
• HAACP — Hazard Analysis Critical Control Points Program
• WILOO — Williamstown Observatory Observations
• EPIC — Earth Polychromatic Imaging Camera
• CBI — Confederation of British Industries
• SRB — Solid Rocket Boosters
• AIPS — Astronomical Image Processing System

• EUV — Extreme Ultra-Violet 2
• OHTA — Office of Health Technology Assessment
• MBBNET — Minnesota Biomedical Business Network
• NMDC — National Medical Device Coalition
• SPD — Solar Physics Division
• LLC — Limited Liability Partnership
• ASIM — American Society of International Medicine
• HSQB — Health Standard and Quality Bureau
• SRM — Solid Rocket Motor
• DEED — Minnesota Department of Employment and Economic Development
• NAG — Numerical Algorithms Group Inc.
• NAMES — National Association of Medical Equipment Services
• CPFF — Cost Plus Fixed-Fee
• PMT — Photo Multiplier Tube
• MEDGV — Germany's Medical Equipment Safety Law
• UCLA — Harbor-University of California Los Angeles
• SRL — Space Radar Laboratory
• RAA — Relative Azimuth Angle
• LHA — Local Hour Angle
• JAPA — Journal of Astrophysics and Astronomy
• MDDI — Medical Device and Diagnostics Industry
• ASAIO — American Society for Artificial Internal Organs
• SF — Square Foot
• OSCAR — Orbiting Satellite Carrying Amateur Radio
• T&E — Test and Evaluation
• AW&ST — Aviation Week & Space Technology
• MSFN — Manned Space Flight Network
• TOKAB — Tokyo Astronomical Bulletin
• EFPIA — European Federation of Pharmaceutical Industries and Associations
• PSF — Point Spread Function
• JCCT — Joint Commission on Commerce and Trade (US-China)
• VHT — Very High Temperature
• GRS — Gamma Ray Spectrometer
• VDC — Volts, Direct Current
• OTV — Orbital Transfer Vehicle
• MDA — Medical Device Amendments
• IMDA — Independent Medical Distributors Association
• MAFI — Medical Alert Foundation International
• ST — Star Tracker
• HIBCC — Health Industry Business Communications Council
• ER — Eastern Range
• VTVL — Vertical Takeoff Vertical Landing
• RAPS — radiologists, anesthesiologists, and pathologists
• AMDM — Association of Medical Diagnostics Manufacturers
• MPBU — Minor Planet Bulletin
• ATEL — Astronomer's Telegram
• QSO — Quasar|Quasi-Stellar Object
• CIRRIS — Cryogenic Infrared Radiance Instrument for Shuttle
• MACHO — Massive Compact Halo Object
• ISTAHC — International Society of Technology Assessment in Health Care

• LDEF — Long Duration Exposure Facility (for Spacecraft Material Testing)
• MDS — Medium Deep Survey
• NHIB — National Health Insurance Bureau (Taiwan)
• EUDRA — European Drug Regulatory Authorities Network
• PDA — Parenteral Drug Association
• MTI — Minnesota Technology Inc
• JCAHO — Joint Committee on the Accreditation of Healthcare Organizations
• PR — Problem Report
• SEB — Systems Engineering Branch
• OEJV — Open European Journal on Variable Stars
• INTEGRAL — International Gamma-Ray Astrophysics Laboratory
• B/L — Baseline
• SR — Special Relativity
• IOA — Institute Of Astronomy (Cambridge)
• WR — Western Range
• WMAP — Wilkinson Microwave Anisotropy Probe
• SNR — Super Nova Remnant
• UVS — Ultraviolet Spectrometer
• CDS — Coronal Diagnostic Spectrometer
• CMB — Cosmic Microwave Background
• LLO — Low Lunar Orbit
• DSS — Digitized Sky Survey
• VAC — Volts, Alternating Current
• PT — Pass-Through
• RTV — Room Temperature Vulcanizer
• GMT — Giant Magellan Telescope
• QSIT — Quality System Inspection Technique
• ST-ECF — Space Telescope - European Coordinating Facility
• PACS — Physics and Astronomy Classification Schemex
• RTK — Right-To-Know
• TIMED — Thermosphere Ionosphere Mesosphere Energetics and Dynamics
• MPEC — Minor Planet Electronic Circular
• SIP — Sickness Index Profile
• MTPPI — Medical Technology and Practice Patterns Institute
• HPB — Health Protection Board (Canada)
• DIN — Deutsches Institut fur Normung
• FIPS — Fast Imaging Plasma Spectrometer
• JETRO — Japan External Trade Organization
• ORA — FDA's Office of Regulatory Affairs
• MOSS — Market-Oriented Sector Selective
• RAPS — Regulatory Affairs Professional Society
• SETI — Search for Extraterrestrial Intelligence
• GEM — Giotto Extended Mission
• SOHO — Solar Heliospheric Observatory
• BATSE — Burst and Transient Source Experiment
• VLBI — Very Long Baseline Interferometry
• SGR — Soft Gamma Repeater
• LBT — Large Binocular Telescope
• PERI — Pharmaceutical Education & Research Institute
• TES — Thermal Emission Spectrometer

• GLOMR — Global Low-Orbiting Message Relay
• ATM — Apollo Telescope Mount (on Skylab)
• FPA — Floating Point Accelerator
• LRO — Lunar Reconnaissance Orbiter
• NLN — National League for Nursing
• SOHO — SOlar and Heliospheric Observatory
• CENELEC — European Committee for Electromechanical Standardisation
• NSP — NASA Support Plan
• TNO — Trans-Neptunian Object
• HTML — Hyptertext Markup Language
• AIMBE — American Insitute for Medical and Biological Engineering
• LAMO — low altitude mapping orbit
• WHT — William Herschel Telescope
• CM — Center of Mass
• PBPK — Physiologically-Based Pharmacokinetic
• MODIS — Moderate Resolution Imaging Spectroradiometer
• KODOB — Kodaikanal Observatory Bulletins
• AGN — Active Galaxy Nucleus
• RQQ — Radio Quiet Quasar
• UADE — Unanticipated Adverse Device Effects
• NOCC — Network Operations Control Center (GSFC)
• DNA — Digital Network Architecture
• CM/QA — Configuration Management/Quality Assurance
• SAPS — Sub Auroral Polarization Streams
• MOTIE — Ministry of Trade, Industry, and Energy (Korea)
• QE — Quantum Efficiency
• ARAA — Annual Review of Astronomy and Astrophysics
• STMAP — Studies in Mathematical Physics
• VAFB — Vandenberg Air Force Base
• LS/ST — Light Shield/Star Tracker
• MLI — Multilayer Insulation
• BEV — Billion Electron Volts
• GOES — Geostationary Orbiting Environmental Satellite
• RVGSP — Reviews of Geophysics and Space Physics
• USAFA — United States Air Force Academy
• IOLM — International Organization of Legal Metrology
• SOT — Solar Optical Telescope
• IFCC — International Federation of Clinical Chemists
• STHCG — Studies in High Energy Physics Cosmology and Gravitation
• SIMCAT — simulate observations using space catalog
• FDAMA — FDA Modernization Act of 1997
• NAHC — National Association of Home Care
• LAIRT — Large-Aperture Infrared Telescope
• EU — Expanded Universe
• LIGO — Laser Interferometer Gravitational-Wave Observatory
• ESS — Engineering Support System
• GLOB — Globular
• ERF — Energy Rejection Filter
• EGRET — Energetic Gamma Ray Explorer Telescope
• LAC — Lockheed Aircraft Corporation

• CNB — Cosmic Neutrino Background
• D/A — Digital-to-Analog
• SSGSR — Springer Verlag Springer Series on Group Geophysics Space Research
• RCS — Reaction Control System/Subsystem
• FD — Flight Day
• MEDSUN — Medical Device Surveillance Network
• SSDF — Space Science Development Facility
• SM — Standard Model
• CWS — Committee on World Standards
• BH — Black Hole
• BMDO — Ballistic Missile Defense Office
• HUT — Hopkins Ultraviolet Telescope
• QTG — Quantum Theory of Gravity
• DCR — Document Change Request
• PPQA — Pre-Product Quality Assurance
• EDMA — European Diagnostics Manufacturer's Association
• MITTS — Mobile Igor Tracking Telescope System
• LAPSS — Large-Area Pulse Solar Simulator
• A&AS — Astronomy and Astrophysics Supplement Series
• BCS — Bragg Crystal Spectrometer
• ODE — Office of Device Evaluation
• EMDM — European Medical Device Manufacturer
• COCIR — Coordination Committee of the Radiological and Electromedical Industries
• EBTC — Edison BioTechnology Center
• ETC — Estimated Time to Completion
• WAXS — Wide Angle X-ray Scattering
• HGA — High Gain Antennae
• LM — Lunar Module
• PSLV — Polar Satellite Launch Vehicle (Indian Space Research Organization; India)
• HDIF — Health Care Data Interchange Format
• MACRO — Monopole, Astrophysics and Cosmic Ray Observatory
• POMIN — Publications of the Astronomical Observatory University of Minnesota
• MPI — Minnesota Project Innovation
• LRO — Large Radio Observatory
• SKA — Square Kilometre Array
• SSME — Space Shuttle Main Engine
• LEM — Lunar Excursion Module
• MMIC — Medical Manufacturers' Information Council
• SNII — SuperNova of Type II
• Z — Zenith
• RAZEL — Range, Azimuth and Elevation
• BHTA — British Healthcare Trades Industry
• JHU — The Johns Hopkins University (Baltimore, MD)
• LAMMR — large-antenna multichannel microwave radiometer
• PEB — Performance Evaluation Board
• TGF — Terrestrial Gamma-Ray Flash
• MPC — Minor Planet Circulars
• POL — Physician's Office Laboratory
• GPE — Gravitational Potential Energy
• XUV — Extreme Ultraviolet

• CCLRC — Central Laboratory of the Research Councils
• LCROSS — Lunar CRater Observation and Sensing Satellite
• TAI — International Atomic Time
• RMS — Record Management System
• NEO — Near Earth Object
• EUCOMED — European Confederation of Medical Suppliers Associations
• EROS — Earth Resources Observation Satellite
• HCPCS — Health Care Common Procedure Coding System
• MEDMARC — Medical Device Material Assurance and Reinsurance Company, Ltd.
• VLT — Very Large Telescope
• MDR — Medical Device Reports
• LAN — Local Apparent Noon
• TNM — The New Millenium
• CNSA — China National Space Administration
• DOC — Data Operations Center
• SIRTF — Space Infrared Telescope Facility
• WCS — World Coordinate System
• TOCC — TDRS Operations Control Center
• ZAHB — Zero-Age Horizontal Branch
• IPA — Institute for Polyacryclate Sciences
• HEDIS — Healthplan Employee Data and Information
• SA — Solar Array
• HEO — Highly Elliptical Orbit
• SIMBAD — Set of Identifications, Measurements, and Bibliography for Astronomical Data
• MDC — Major Diagnostics Category
• DC — Delta Clipper
• ISO — Imaging Spectrometic Observatory
• IPNS — Intense Pulsed Neutron Source
• ECSS — European Cooperation for Space Standardization
• GHRS — Goddard High Resolution Spectrograph
• MVCA — Minnesota Venture Capital Association
• SHAD — Stellar Horizon Atmospheric Dispersion
• GML — Galactic Modeling Language
• SNR — SuperNova Remnant
• LLAGN — Low-Luminosity Active Galactic Nucleus
• MOLA — Mars Observer Laser Altimeter
• ZPF — Zero-Point-Fluctuation
• CST — Constant-Separation Traversing
• ESIS — ESA Space Information Systems
• MNBIO — Minnesota Biotechnology
• VAB — Vehicle Assembly Building
• ESTEC — European Space Technology Center
• PMA — Premarket Application
• ESABU — European Space Agency Bulletin
• JCMT — James Clerk Maxwell Telescope
• APM — Attached Pressurized Module (a.k.a. Columbus)
• UHMW — Ultra High Molecular Weight
• JWST — James Webb Space Telescope
• IMBH — Intermediate-Mass Black Hole
• LCG — light curve generator

• DH — Data Handling
• GAS — Getaway Special
• OFAD — Optical Field Angle Distortion
• ADFRF — Ames-Dryden Flight Research Facility
• MVEMJSUNP — Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto
• STO — Solar Terrestrial Observatory
• POSS — Palomar Observatory Sky Survey
• POCC — Payload Operations Control Center
• LDEO — Lamont-Doherty Earth Observatory
• XMM — X-ray Multi Mirror
• TR — Tape Recorder
• ZAMS — Zero Age Main Sequence, a star that has just become a main-sequence star (i.e. a star that has begun burning hydrogen in its core)
• PISCO — Parallel Imager for Southern Cosmological Observations
• ANSAO — Annals of the Astrophysical Observatory of the Smithsonian Institution
• SSID1 — Soviet Space Insertion Diverter One
• RV — Radial Velocity
• LVPS — Low Voltage Power Supply
• MA — Medical Alley
• NACA — National Advisory Committee on Aeronautics
• MOWG — Mission Operations Working Group
• GST — Ground System Test
• ITU — Infrared Telescope Unit
• SPARTAN — Shuttle Pointed Autonomous Research Tool for Astronomy
• PM — Pressurized Module
• WISE — Wide-Field Infrared Survey Explorer
• MER — Mars Exploration Rover
• WSO — Wilcox Solar Observatory
• MS — Master Schedule
• MCO — Mars Climate Orbiter
• KBO — Kuiper Belt Object
• STEREO — Solar Terrestrial Relations Observatory
• IWG — Interface Working Group
• CAPS — Cassini Plasma Spectrometer
• IDT — Investigation Definition Team
• ROSA — Romanian Space Agency
• MMT — Multiple Mirror Telescope
• HAO — High Altitude Observatory (NCAR)
• AESS — Institute of Electrical and Electronic Engineers - Aerospace and Electronics Systems Society
• NEA — Noise Equivalent Angle
• AVSOM — American Association of Variable Stars Observers Monographs
• JRASN — Journal of the Royal Astronomical Society of New Zealand
• TCPA — Time for Closest Point of Approach
• DEFCAL — deflection calibration
• PPN — Proto-Planetary Nebula
• OAF — Optical Alignment Facility
• JD — Julian Date
• ARKOD — Annual Report of the Kodaikanal Observatory
• SMM — Solar Maximum Mission
• TEC — Thermal Electric Cooler
• AAOPR — Anglo-Australian Observatory Epping Preprint

• OV — Orbital Vehicle
• WTR — Western Test Range
• CATS — Cheap Access to Space
• AP — Array Processor
• MOC — Mars Observer Camera
• PN — Planetary Nebula
• MSOCC — Multisatellite Operations Control Center
• VHE — Very High Energy
• NASO — North American Space Operations
• MINISAT — Miniature Satellite
• NR — Non-Relativistic
• RC — Relativistic Correction
• ADSAC — Advanced Series in Astrophysics and Cosmology
• PVO — Pioneer Venus Orbiter
• OPM — Outer Planet Mission
• CRAF — Comet Rendezvous/Asteroid Fly-by
• HSP — High Speed Photometer
• LERC — Lewis Research Center
• WCFZ — Worst Case Fresnel Zone
• EGG — Evaporating Gaseous Globule
• AGPS — Assisted Global Positioning System
• ACE — Actuator Control Electronics
• CCR — Configuration Change Request
• ATDRS — Advanced Tracking and Data Relay Satellite
• COROT — Convection Rotation and Planetary Transits
• MVM — Mariner Venus/Mercury
• SDAC — Solar Data Analysis Center
• UGC — Uppsala General Catalog
• VLBA — Very Long Baseline Array
• ISM — Interstellar Medium
• SUMER — Solar Ultraviolet Measurements of Emitted Radiation
• CEA — Center for EUV Astrophysics
• UT — University of Texas
• GTO — Geostationary Transfer Orbit
• ODF — Orbit Determination Facility
• GPC — General Purpose Computer
• STATS — star tracker alignment test set
• ODC — Other Direct Cost
• MPF — Mars PathFinder
• CGRO — Compton Gamma-Ray Observatory
• ISTS — Institute for Space and Terrestrial Science
• TV — Thermal Vacuum
• MM — Memory Module
• LST — Large Space Telescope
• CEV — Crew Exploration Vehicle
• AASPP — Astrononomy and Astrophysics Series
• AAAD — Amateur Astronomers Association Delhi
• NM — Non-Moment
• RAE — Radio Astronomy Explorer
• CL — Command Language

• UNOOSA — United Nations Office for Outer Space Affairs
• SIC — Spacecraft Identification Code
• MHD — Magnetohydrodynamic
• CFF — Columbus Free Flyer
• LM&SS — Lunar Mapping and Scientific Survey
• ET — External Tank
• AAONW — Anglo-Australian Observatory Epping Newsletter
• PAN-STARRS — Panoramic Survey Telescope and Rapid Response System
• EHB — Extreme Horizontal Branch
• ABBA — ADC Backend For Bolometer Array
• ANTOK — Annals of the Tokyo Astronomical Observatory
• LH — Liquid Hydrogen
• PCA — Proportional Counter Array
• PDR — Photo Dissociation Region
• AVSOA — American Association of Variable Stars Observers Abstracts
• MMRAS — Memoirs of the Royal Astronomical Society
• FK4 — Fundamental Katalog 4
• AVSOQ — American Association of Variable Stars Observers Quarterly Reports
• LPV — Long Period Variable
• ASSA — Astronomical Society of South Africa
• BANS — Bulletin of the Astronomical Institutes of the Netherlands, Supplement Series
• SPIRIT — Spatial Infrared Telescope
• ISSRT — Israel Space Research and Technology Information Bulletin
• OSTA — Office of Space and Terrestrial Applications (US NASA; now OAST)
• LST — Local Sidereal Time
• G — Gravity
• NEAR — Near-Earth Asteroid Rendezvous
• ISBRV — International Space Business Review
• PAMELA — Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics
• NRF — National Research Foundation
• FDR — Final Design Review
• UDL — Unique Data Log
• IGM — Intergalactic Medium
• PGOOO — Publications of the Goodsell Observatory
• WBHF — WideBand High Frequency
• SEF — Space Environmental Facility
• APINV — Astrophysical Investigations
• E — Earth
• HB — Hot Bands
• UW — University of Wisconsin
• CIRCE — Confusion-limited Infrared Cosmology Explorer
• BHB — Blue Horizontal Branch
• PBOSO — Publications of the Bosscha Observatory Lembang
• NEEDS — NASA end-to-end data system
• MSP — Millisecond Pulsar
• OAO — Orbital Astronomical Observatory
• SANS — Stellar Autonomous Navigation System
• ND — Neutral Density
• AAT — Anglo Australian Telescope
• COPRE — Copenhagen University Observatory Reprints

• SSPF — Space Station Processing Facility
• PKAS — Publication of the Korean Astronomical Society
• OARE — Orbital Acceleration Research Experiment
• LASS — large-amplitude space simulator
• SIM — Space Interferometry Mission
• LGRB(S) — long gamma ray burst(s)
• TPF — Terrestrial Planet Finder
• WXQ — Waxing Quarter
• PBRN — Publications of the Astronomical Institute of the University of Borneo
• PCS — Pointing Control System
• NSTL — National Space Technology Laboratories (NASA)
• DDTE — Design, Development, Test, and Evaluation
• A/D — Analog to Digital (conversion)
• LOWOB — Lowell Observatory Bulletin
• ANLL — Annals of the Observatory of Lucien Libert
• AP&SS — Astrophysics and Space Science
• FQR — Flight Qualification Review
• AR — Active Region
• ARBEI — Astrophysics Reports Publications of the Beijing Astronomical Observatory
• ALMA — Atacama Large Millimeter Array
• JBIS — Journal of the British Interplanetary Society
• CORAD — Communications from the Radcliffe Observatory Pretoria South Africa
• MVI — Microgravity Vestibular Investigation
• MPS — Mission Planning System
• ACRV — Astronaut Crew Rescue Vehicle
• TOY — Time of Year
• MPL — Mars Polar Lander
• MMASI — Memoirs of the Astronomical Society of India
• SQPK — staggered quadrature phase shift keying
• TEA — Torque Equilibrium Attitude
• GIO — graphics input/output
• FRAS — fellow of the Royal Astronomical Society
• LF — Luminosity Function
• MMKMO — Memoirs Of The Kakioka Magnetic Observatory
• LAT — Large Area Telescope
• GMT — Greenwich Mean Time (now obsolete)
• ESTP — European Space Technology Platform
• PCARS — Publication of COMU Astrophysics Research Center
• EGRET — Energetic Gamma Ray Experiment Telescope
• BWI — Baltimore-Washington International Airport, between Baltimore, Maryland and Washington, DC, United States
• RTS — Relative Time Sequence
• LGM — Little Green Men
• SDO — Scattered Disk Object
• LUT — Lookup Table
• SFR — Star Formation Rate
• AXAF — Assembly and Verification Working Group
• AD — Analog to Digital
• SAOCO — Smithsonian Astrophysical Observatory - Contributions to Astrophysics
• IRFNA — Inhibited Red Fuming Nitric Acid
• LIRG — Luminous Infrared Galaxy

• ROE — Royal Observatory, Edinburgh
• DSSC — Deep Space Station Complex
• PLSS — Portable Life Support System
• ANBOS — Annals of the Bosscha Observatory Lembang
• STACC — Standard Telemetry And Communications Component
• SPPOL — Space Policy
• OWL — Overwhelmingly Large Telescope
• PLANEMO — Planetary Mass Object
• SPIRE — Spectral Infrared Rocket Experiment
• BAVSO — Bulletin of the American Association of Variable Stars Observers
• CCDM — Catalog of Components of Double and Multiple Stars
• SSS — Spinning Sun Sensor
• LAWOB — Laws Observatory Bulletin
• LITVC — Liquid Injection Thrust Vector Control
• SLAP — Space Link Access Protocol
• COWAT — Contributions of the University of Waterloo Observatory
• POVRO — Publications of the Owens Valley Observatory
• XCS — XMM Cluster Survey
• SST — Space Surveillance and Tracking
• SXR — Soft X-Ray
• PDO — Publications of the Dominion Observatory Ottawa
• ROUS — Rodents Of Unusual Size
• PAM-D — Payload Assist Module, Delta-class
• CYSF — Cape York Space Facility
• AEDRV — Astronomy Education Review
• SRAG — Space Radiation Analysis Group
• LOD — Length of Day
• NERVA — Nuclear Engine for Rocket Vehicle Application
• PCOOO — Publications of the Cook Observatory
• IFA — Institute for Astronomy
• MEV — Mars Excursion Vehicle
• SSRMS — Space Station Remote Manipulator System
• AVWG — Assembly and Verification Working Group
• TMA — Tycho Magnetic Anomaly
• PAICZ — Publications of the Astronomical Institute of the Czechoslovak Academy of Sciences
• CBR — Cosmic Background Radiation
• VELLO — Very Low Luminosity Object
• BBT — Big Bang Theory
• SHA — Sidereal Hour Angle
• MST — Mean Solar Time
• CEAB — Central European Astrophysical Bulletin
• KP — Kitt Peak
• ACS — Advanced Camera for Surveys
• PDAO — Publications of the Dominion Astrophysical Observatory
• OG — Original Gravity
• WD — White Dwarf
• TMT — Thirty-Meter Telescope
• RSU — Rate Sensor Unit
• TOYAL — Transactions of the Astronomical Observatory of Yale University
• BD — Bonner Durchmusterung

• RGB — Red Giant Branch
• HLV — Heavy Lift Vehicle
• OGSE — Optical Ground Support Equipment
• TZO — Thorne-Å»ytkow Object
• MTSRE — Mount Stromlo Observatory Reprints
• UIC — User Identification Code
• HRMS — High Resolution Microwave Survey (SETI, Project Phoenix)
• ESAST — European Space Agency Scientific Technical Review
• CST — Constant
• MMBAA — Memoirs of the British Astronomical Association
• MNSSA — Monthly Notes of the Astronomical Society of South Africa
• NUSTAR — Nuclear Spectroscopic Telescope Array
• ADU — Astronomical Distance Unit
• ANCGH — Annals of Royal Observatory, Cape of Good Hope
• IRBS — Infrared Background Sensor
• CIAO — Chandra Interactive Analysis of Observations
• APL&C — Astrophysical Letters Communications
• PVSS — Publications of Variable Star Section
• FOC — Faint Object Camera
• SNAP — Supernova / Acceleration Probe
• SPICE — Survey Probe Infrared Celestial Experiment
• THAST — Theoretical Astrophysics
• CSM — Command and Service Module
• MAGIC — Major Atmospheric Gamma-ray Imaging Cherenkov Telescope
• AVSOR — American Association of Variable Stars Observers Reports
• QE — Quality Engineer
• MRSR — Mars Rover Sample Return
• SAREX — Search and Rescue Exercise
• ZAP — Z Axis Precession
• AGILE — Astro-rivelatore Gamma a Immagini Leggero
• OXFOO — Oxford University Observatory Observations
• VOIR — Venus Orbiting Imaging Radar
• A — Angstrom unit
• PKIRO — Publications of the Kirkwood Observatory of Indiana University
• IRTF — Infrared Telescope Facility
• MICRE — University of Michigan Observatory Reprints
• CCD — Color-Color Diagram
• ADASS — Astronomical Data Analysis Software and Systems
• DMF — Data Management Facility
• SVPCS — Springer Verlag Springer Series on Physics Chemistry Space
• JAXA — Japan Aerospace Exploration System
• APPLE — Ariane Passenger Payload Experiment
• SIA — Solar Inertial Attitude
• EAAA — Escambia Amateur Astronomers Association
• CAROB — Carter Observatory Wellington New Zealand Astronomical Bulletins
• C&DH — Control and Data Handling
• ASC — Agence Spatiale Canadienne
• MTC — Man-Tended Capability
• XN — X-ray Nova
• NSC — Navigational Star Catalog

• COAST — Communications in Asteroseismology
• PLR — Planetary Report
• APSSS — Astrophysics and Space Science Supplement
• VMS — Vertical Motion Simulator
• AOR — Astronomical Observation Request
• DWE — Doppler Wind Experiment
• CRISTA — Cryogenic Infrared Spectrometer Telescope For Atmosphere
• SO — Space Operations
• VO — Virtual Observatory
• CG — Compact Galaxy
• CAPMI — Royal Observatory Cape Mimeogram
• ZD — Zenith Distance
• AGK3 — Katalog der Astronomischen Gesellschaft 3
• RASS — ROSAT All-Sky Survey
• VAP — Verification and Acceptance Program
• OLT — Observatory Level Test
• ASTQ — Astronomy Quarterly
• ESOB — European Southern Observatory Bulletin
• LEND — Lunar Exploration Neutron Detector
• UIT — Ultraviolet Imaging Telescope
• FRC — Flight Research Center
• OOTU — Origin Of The Universe
• DDORE — David Dunlap Observatory Richmond Hill Reprints
• PAIB — Publications of the Astronomy Institute of Bonn
• KM — Kilometres
• COTS — Cheap Off the Shelf
• CU — Calibration Unit
• ICCD — Intensified Charge-Coupled Device
• CIB — Cosmic Infrared Background
• OBAFGKM — Oh, Be A Fine Girl, Kiss Me
• CELT — California Extremely Large Telescope
• PC — Planetary Camera
• AXP — Anomalous X-Ray Pulsar
• HTVL — Horizontal Takeoff Vertical Landing
• BALTA — Baltic Astronomy
• OMS — orbital maneuvering system
• VEEGA — Venus-Earth-Earth Gravity Assist
• CDCA — Centre de Depoiullement des Cliches Astronimiques
• CPD — Cape Photographic Durchmusterung
• BIS — British Interplanetary Society
• DSNPR — Deep Space Network Progress Report
• PASPS — Publications of the Astronomical Society of the Pacific Supplement
• AEA — Atomic Energy Agency
• FGE — Fine Guidance Electronics
• LNSP — Lecture Notes and Supplements in Physics
• SST — Spectroscopic Survey Telescope
• PUAMS — Publications of the Astronomical Institute of the University of Amsterdam
• PODPS — Post Observation Data Processing System
• DN — Dwarf Novae
• POHEL — Publications of the Astronomical Observatory Helsinki

• SIRTF — Shuttle InfraRed Telescope Facility
• GG — Gravity Gradient
• PMCCO — Publications of the Leander McCormick Observatory
• IAO — International Astronomy Olympiad
• VSSSC — Variable Star Section Special Circulars
• SMART — Small Missions for Advanced Research in Technology
• STIF — Software Test and Integration Facility
• DEM — Differential Emission Measure
• SRS — Stellar Radiation Sensor
• VILCO — Villanova University Observatory Contributions
• XRT — X-Ray Telescope
• ASTRA — Astrophysics and Space Sciences Transactions
• PSC — Point Source Catalog
• GRC — Glenn Research Center
• DENIS — Deep Near-Infrared Survey
• TOPS — Toward Other Planetary Systems
• VPF — Vertical Processing Facility
• CCAR — Colorado Center for Astrodynamics Research
• SI — Science Instrument
• EC — Embedded Cluster
• OHP — Observatoire de Haute-Provence
• CIT — Circumstellar Imaging Telescope
• PHA — Potentially Hazardous Asteroid
• COOXF — Communications from the University Observatory Oxford
• QEH — Quantum Efficiency Hysteresis
• RICAP — Roma International Conference on Astroparticle Physics
• PF&CO — Publications of the Flower and Cook Astronomical Observatory
• CPMM — characters per millimeter
• LSST — Large Synoptic Survey Telescope
• ANSHO — Shanghai Observatory Annals
• MSTO — Main Sequence Turn-Off
• HZ — Habitable Zone
• ODB — Operations Data Base
• VFN — virtual file name
• MTWRE — Mount Wilson and Palomar Observatory Reprints
• TMTE — Telemetry Test Equipment
• MMAAR — Maria Mitchell Association Annual Report
• NG — Newsgroup
• MEERE — Kenneth Mees Observatory Reprints
• COPRI — Contributions from the Princeton University Observatory
• PLAWO — Publications of Laws Observatory
• PMC — Permanently Manned Capability (of Space Station)
• TEI — The Education Initiative
• MU — Memory Unit
• HOTOL — Horizontal Takeoff and Landing Launcher
• GXY — Galaxy
• KODRE — Kodaikanal Observatory Reprints
• ECA — Earth Crossing Asteroid
• BDB — Big Dumb Booster
• SEM — space environment monitoring

• STERJ — Solar, Terrestrial and Environmental Research Japan
• CTB — Cargo Transfer Bag
• ACURA — Association of Canadian Universities for Research in Astronomy
• ODAS — OCA (Observatoire de la Côte d'Azur) - DLR (Deutschen Zentrum für Luft- und Raumfahrt) Asteroid Survey
• MO — Mars Observer
• DLR — Deutschen Zentrum für Luft- und Raumfahrt
• IDA — International Dark-Sky Association, Inc.
• RTLT — Round Trip Light Time
• FOCAS — Faint Object Classification and Analysis System
• PNLF — Planetary Nebula Luminosity Function (astronomy)
• ASWG — Astronomical Science Working Group
• VCS — Vernier Control System
• SQM — Strange Quark Matter
• QPOE — Quick Position Oriented Event
• PWM — pulse width modulated
• MACHO — Massive Astronomical Compact Halo Object
• PISTO — Publications of the Istanbul Observatory
• FTETTM — From The Earth To The Moon
• OTHB — Over The Horizon Backscatter
• PFAO — Publications of the Flower Astronomical Observatory
• KAIT — Katzman Automatic Imaging Telescope
• DCMF — Data Capture and Management Facility
• SANSA — South African National Space Agency
• CPMF — cost plus management fee
• ULAS — Union List of Astronomy Serials
• CMBR — Cosmic Microwave Background Radiation
• APL — Astrophysical Letters
• DCF — Data Capture Facility
• VTHL — Vertical Takeoff Horizontal Landing
• ADAF — Advection-dominated Accretion Flow
• HFQPO(S) — high-frequency quasi-periodic oscillation(s)
• MEM — Maximum Entropy Method
• R-L — Richardson-Lucy
• LBV — Luminous Blue Variable
• FIRST — Frontiers in Research: Space and Time
• PRAST — Practical Astronomy
• SNY — Starry Night Backyard
• CSAA — Committee on Space Astronomy and Astrophysics
• NED — NASA/IPAC Extragalactic Database
• CARRE — Carter Observatory Wellington New Zealand Reprints
• SP — sun point
• TCE — Thermal Control Electronics
• COLON — Communications of the University of London Observatory
• SGRB(S) — short gamma ray burst(s)
• ATM — Amateur Telescope Maker
• SETI — Search for Extra Terrestial Intelligence
• AGN — Active Galactic Nucleus
• SPO — Sacramento Peak Observatory
• MLY — Mega Light Year
• HTHL — Horizontal Takeoff Horizontal Landing

• LCDM — Lambda Cold Dark Matter
• VSSRE — Variable Star Section Reprints
• SERF — Space Environment Research Facility
• PASK — Publications of the Academy of Science Kasakstan
• MMO — Mercury Magnetospheric Orbiter
• WAA — Westchester Amateur Astronomers
• PPMTO — Publications of the Purple Mountain Observatory
• STAVF — Space Telescope Assembly and Verification Facility
• E/A — Ephemeris/Attitude
• SG — Shattered Galaxy (game)
• SM — Secondary Mirror
• CD — Cordoba Durchmusterung
• PAB — Publications of The Astrophysics Branch Ottawa
• LAMP — Lyman-Alpha Mapping Project
• CSVS — Catalogue of Suspected Variable Stars
• CSMA — Committee on the Status of Minorities in Astronomy
• VSSCI — Variable Star Section Circulars
• TKSC — Tsukuba Space Center
• IPS — Inches Per Second
• CCITT — Consultative Committee on International Telegraph & Telephone
• NEMP — Nitrogen-Enhanced Metal-Poor
• DQE — Detector Quantum Efficiency
• SCP — Supernova Cosmology Project
• RM — Retrieval Mode
• LCRS — Las Campanas Redshift Survey
• ♃ — Jupiter
• AMR — Antarctic Meteorite Research
• EBE — Extraterrestrial Biological Entity
• SSI — Solid-State Imager
• ABB — After the Big Bang
• MTWAR — Mount Wilson and Palomar Observatory Annual Report
• DES — Deep Ecliptic Survey
• MDRS — Mars Desert Research Station
• HVR — Hyper-Variable Region
• ATC — Absolute Time Command
• MT — Moving Target
• RXTE — Rossi X-Ray Timing Explorer
• DG — Data Group
• EPD — Energetic Particles Detector
• CSPN — Central Star of Planetary Nebula
• VISTAR — visible space tracking and reconnaissance
• MTSOM — Mount Stromlo Observatory Mimeographs
• TMC — Taurus Molecular Cloud
• WOMBAT — Wavelength-Oriented Microwave Background Analysis Team
• KTB — Cretaceous-Tertiary Boundary
• DSO — Deep Sky Object
• ENE — East North East
• ROLUN — Reports of the Lund Observatory
• ZHR — Zenith Hourly Rate
• BRITE — Bright-Star Target Explorer

• SID — Sudden Ionospheric Disturbance
• WR — Wolf-Rayet Star
• YSO — Young Stellar Object
• VRCS — Vernier Reaction Control System
• RPSS — Remote Proposal Submission System
• C/C — configuration control
• ODS — Our Dark Skies
• IRAC — International Radio Advisory Committee
• RNP — Rotation, Nutation and Precession
• SDMS — Spatial Data Management System
• DDCU — DC-to-DC Converter Unit
• CEMP — Carbon-Enhanced Metal-Poor
• AU — Alternate Universe
• PDB — Project Data Base
• BCG — Blue Compact Galaxy
• WIRCAM — Wide-field InfraRed Camera, instrument on the Canada-France-Hawaii Telescope
• OPO — Operations Project Office
• IRA — Infrared Astronomy
• TBBT — The Big Bang Theory
• MONGO — Interactive graphics software package
• TIUCS — Transactions of the International Union for Cooperation in Solar Research
• VERITAS — Very Energetic Radiation Imaging Telescope Array System
• SP — Solar Physics
• COMPTEL — Compton Telescope
• ACV — Alpha Canes Venatici
• NICMOS — Near-Infrared Camera and Multi-Object Spectrometer
• SAC — Saguaro Astronomy Club
• GHA — Greenwich Hour Angle
• SLOI — Satellite Lake Observatory Initiative
• SOUST — Southern Skies
• PDAA — Publications of the Department of Astronomy, Austin, Texas
• UCSD — University of California San Diego
• WAA — Western Amateur Astronomers
• SWAS — Submillimeter Wave Astronomy Satellite
• XRF — X-Ray Flash
• ATR — Absolute Time Reference
• CCIR — Comit? Consultatif International Pour La Radio (French For Consultative Committee On International Radio
• PST — Personal Solar Telescope
• TUASB — Tokyo University Institute of Space and Aeronautical Science Bulletin
• AVO — Astrophysical Virtual Observatory
• VZA — Viewing Zenith Angle
• APT — Automatic Photometric Telescope
• ET — Ephemeris Time (now obsolete)
• NLTE — Non-local Thermodynamic Equilibrium
• CCA — Cambridge Contemporary Astrophysics
• ASCA — Advanced Satellite for Cosmology and Astronomy
• SWAT — Swift Action Team
• DMS — Data Management Subsystem
• BOOK — Bio Optical Organized Knowledge
• EAFB — Edwards Air Force Base

• SCSP — Science and Culture Series Physics
• SST — Spitzer Space Telescope
• FIRST — Far InfraRed and Submillimeter Space Telescope
• NGS — National Geographic Society
• MTR — Mean Time to Restore
• MAG — Magnitude
• UGSS — UG SS Cygni
• SL — Comet Shoemaker-Levy
• EAPU — External Auxiliary Power Unit
• GSPC — Guide Star Photometry Catalog
• DPS — Division for Planetary Sciences
• BBH — Big Black Hole
• GAF — Geographic Adjustment Factor
• PA — Position Angle
• MOND — Modified Newtonian Dynamics
• SHAD — Stellar Horizon Attitude Determination
• SPDM — Special Purpose Dextrous Manipulator
• NEA — Near-Earth Asteroid
• LOSS — Lick Observatory Supernova Search
• RABF — Radio Astronomy Bandstop Filter
• UGZ — UG Z Camelopardalis
• STARCAT — Space Telescope Archive Catalog
• SCSA — Science and Culture Series Astrophysics
• SAS — Space Adaptation Syndrome
• ZOF — zone of exclusion
• CVZ — Continuous Viewing Zone (Hubble Space Telescope; US NASA)
• NEO — Near-Earth Object - Non-combatant Evacuation Operations
• EJASA — Electronic Journal of the Astronomical Society of the Atlantic
• SED — Spectral Energy Distribution
• FEM — Finite Element Model
• PUSNO — Publications of the US Naval Observatory
• OPS — Operations Division
• GVI — Global Village Idiot
• TRACE — Transition Regional and Coronal Explorer
• YSG — Yellow Super Giant
• AST — Apparent Solar Time
• SSP — Subsolar Point
• ABRIXAS — A BRoadband Imaging X-ray All-sky Survey
• AAA — Amateur Astronomers Association
• RRAT — Rotating RAdio Transient
• AQR — Aquarius
• PCS — Physics and Chemistry in Space
• SPA — Solar Panel Assembly
• CAI — Calcium Aluminum-rich Inclusion
• R&I — Receiving and Inspection
• LPICO — Lunar and Planetary Institute Contributions
• FRONT — Front Range Observational Network Testbed
• ITF — Intensity Transfer Function
• OSS — Observation Support System
• MIP — Moon Impact Probe

• ETI — Extraterrestrial Intelligence
• IPMO — Isolated Planetary-Mass Objects
• AIT — Assembly, Integration, and Testing
• WTTS — Weak-Line T-Tauri Star
• CNS — Computing and Network Services
• IDT — Instrument Development Team
• CREAM — Cosmic Ray Energetics and Mass
• ADIL — Astronomy Digital Image Library
• NSSCC — NORAD Space Surveillance Computation Center
• GCVS — General Catalog of Variable Stars
• BEM — Bug-Eyed Monster (Late 40's-early 50'soft-used, and still in use, Sci-Fi term)
• UBM — Unpressurized Berthing Mechanism
• ETOL — ESA Test and Operations Language
• UDMH — Unsymmetrical Dimethyl Hydrazine (Alar Metabolite)
• M — Messier
• SAC — Solar Array Carrier
• HRS — High Resolution Spectrograph
• SCAS — Southern Cross Astronomical Society, Inc.
• PAD — Pulse Amplitude Discriminator
• HIPO — Hierarchic Input-Process-Output
• CVN — Canes Venatici (A constellation in the Northern Hemisphere near Ursa Major and Boötes, under the handle of the Big Dipper)
• USMP — United States Microgravity Payload
• DRS — Direct Receiving Station
• IMO — International Meteor Organization
• WGAS — Working Group on Astronomical Software
• JVO — Japanese Virtual Observatory
• RFT — Rich Field Telescope
• THEMIS — Thermal Emission Imaging System
• LMST — Local Mean Sidereal Time
• GMRT — Giant Meter-wave Radio Telescope
• AGK — Astronomische Gesellschaft Katalog
• AAT — Anglo-Australian Telescope
• ALAT — Airborne Large Aperture Telescope
• AOC — Award Of Contract
• EIT — Extreme Ultraviolet Imaging Telescope
• VSOLB — Variable Star Observers League in Japan - Bulletin
• FACC — Ford Aerospace Communications Corporation
• ESTEC — European Space Research and Technology Center
• CRS — Cambridge Reference Sequence
• RSAA — Research School of Astronomy and Astrophysics
• STAR — Space Telescope Axial Replacement
• UCLAP — University of California Los Angeles - Astronomical Papers
• TCB — Barycentric Coordinate Time
• CSPAR — Center for Space Plasma and Aeronomic Research
• IQL — Interactive Query Language
• IMIO — Image Input/Output
• BDF — Block Data Format
• IPNPR — Interplanetary Network Progress Report
• TFMRP — Transfer Function Mode Reduction Package
• TAG — Two-Axis Gimbal

• EKBO — Edgeworth-Kuiper Belt Object
• GLOW — Gross Lift-Off Weight
• RVMA — Reviews in Modern Astronomy
• ♅ — Uranus
• CAMAC — Computer-Aided Measurement and Control
• LBVS — Luminous blue variable
• WKO — Well-Known Object
• OCS — Optical Control System
• ACIS — Advanced CCD Imaging Spectrometer
• ARGOS — Advanced Research Global Observation Satellite
• QPO — Quasi-periodic Oscillation
• EMP — Extremely Metal-Poor
• NSL — Northrop Space Laboratory
• DSD — Data Systems Division
• ESTR — Engineering and Science Tape Recorder
• SAL — Space Astronomy Laboratory (Univ. Wisconsin, Madison WI)
• TSTO — Two-Stage-To-Orbit
• MOSES — Mission Operations and Systems Engineering Support
• CFCO — Committee for Crescent Observation
• EU — Engineering Unit
• ♇ — Pluto
• SXT — Soft X-Ray Telescope
• GHZ — Galactic Habitable Zone
• EAC — European Astronaut Centre
• PCT — Program Coordinator Team
• ISR — Instrument Science Report
• MPO — Mercury Planetary Orbiter
• CAAA — Capital Area Astronomy Association
• RQZ — Radio Quiet Zone
• PEP — Proposal Entry Processor
• SAREX — Space Amateur Radio Experiment
• SMA — Secondary Mirror Assembly
• CDIMP — Catalogue of Discoveries and Identifications of Minor Planets
• STEIS — Space Telescope Electronic Information System
• SMS — Science Mission Specification
• GDS — Great Dark Spot
• OVIWG — Orbital Verification Implementation Working Group
• PW&SO — Publications of the Warner Swasey Observatory
• VSAT — Very Small Angle Tracker
• AEDP — Astrometry and Engineering Data Processing
• IRDC — Infrared Dark Cloud
• VGRF — Variable-Gravity Research Facility
• NIMS — Near-Infrared Mapping Spectrometer
• MCSA — Mir Cooperative Solar Array
• CAS — Cambridge Astrophysics Series
• PWN — Pulsar Wind Nebula
• FPA — Focal Plane Assembly
• LFT — Luyten Five-Tenths
• SUVSR — Scandinavian Union of Amateur Astronomers Variable Star Section
• TT — Terrestrial Time (replaced Ephemeris Time, ET)

• RAL — Radio Astronomy Laboratory
• EAAS — East Antrim Astronomical Society
• ROTSE — Robotic Optical Transient Search Experiment
• SDAS — Scientific Data Analysis System
• FES — Fine Error Signal
• CTO — Color Temperature Orange
• SOGS — Science Operations Ground System
• MEV — million electron volts
• ACP — Aerosol Collector and Pyrolyser
• SPIEL — Signal Processing Interactive Extensible Language
• GTO — Guaranteed Time Observer
• IDT — Image Dissector Tube
• RPI — Rensselaer Polytechnic Institute (Rensselaer, NY)
• DQF — Data Quality File
• DISR — Descent Imager/Spectral Radiometer
• DN — Dwarf Nova
• MACRO — Monopoles, Astrophysics, and Cosmic Ray Observatory
• M — Mira
• SCUBA — Submillimetre Common User Bolometer Array
• TAUVEX — Tel Aviv University Ultraviolet Explorer
• SPRL — Space Physics Research Laboratory
• TLP — Transient Lunar Phenomenon
• CTWG — Calibration Targets Working Group
• TUASR — Tokyo University Institute of Space and Aeronautical Science Report
• SMBH — Super Massive Black Hole
• TAMS — Terminal-Age Main Sequence
• TYC — Tycho
• LBN — Lynds Bright Nebula
• MPC — Minor Planets Circular
• SHAR — Stellar Horizon Atmospheric Refraction
• UKST — United Kingdom Schmidt Telescope
• QZ — Quasi Zenith
• CGRO — Compton Gamma Ray Obsrvatory
• CRAP — Completely Radical Anthropic Principle
• CSWA — Committee on the Status of Women in Astronomy
• Q&A — qualification and acceptance
• BATC — Beijing-Arizona-Taiwan-Connecticut
• DPOSS — Digitized Palomar Observatory Sky Survey
• VRM — Venus Radar Mapper
• STSDAS — Space Telescope Science Data Analysis System
• FD — File Descriptor
• MFR — Manipulator Foot Restraint
• CVC — Current-to-Voltage Converter
• PEGA — Programs in Extra-Galactic Astronomy
• E — Eclipsing
• MRSRM — Mars Rover and Sample Return Mission
• STOL — Systems Test and Operations Language
• IFT — Inverse Fourier Transform
• SB — Spectroscopic Binary
• SNAP — Structural Network Analysis Program

• SLS — Space Life Sciences
• ATPI — Astronomy Through Practical Investigations
• SST — Software Support Team
• TAR — Test Authorization Request
• SGEMP — Space-Generated Electromagnetic Pulse
• TMP — Technical Management Plan
• RLQ — Radio Loud Quasar
• RIACS — Research Institute for Advanced Computer Science
• USOC — Unified System Orbit Computation
• MV — Apparent Visual Magnitude
• LINER — Low Ionization Nuclear Emission Region
• IRS — International Reference Star
• SPWEA — Space Weather
• PASP — Publications of the Astronomical Society of Pacific
• HKO — Hong Kong Observatory
• SETA — Search for Extra Terrestrial Artifacts
• C&T — Communications and Tracking
• C&A — calibration and analysis
• SSPRV — Space and Solar Power Review
• LWS — Long Wavelength Spectrometer
• LMS — Lower Main Sequence
• LFSA — List of Frequently Seen Acronyms
• OSB — Operations Software Branch
• DCEP — Delta Cepheid
• CNSR — Comet Nucleus Sample Return
• ASAS — All Sky Automated Survey
• BCCP — Berkeley Center for Cosmological Physics
• AC — Astrographic Catalogue
• SPE — Static Phase Error
• CCMS — Command Control and Monitor System
• NEAF — North East Astronomy Forum
• EAAE — European Association for Astronomy Education
• BSS — Blue Straggler Star
• AJD — Astronomical Julian Day
• WDM — Warm Dark Matter
• SOSYR — Solar System Research
• ACIT — Automatic Comet Imaging Telescope
• LP — Lonely Planet
• TRACE — Transition Region and Coronal Explorer
• SLOWPOKES — Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars
• CAAS — Central Arkansas Astronomical Society
• PMPS — Parkes Multibeam Pulsar Survey
• SPT — South Pole Telescope
• TB — Thermal Balance
• SARA — Satellite pour Astronomie Radio Amateur
• UGSS — U Gem variable type star (SS Cygnus subtype)
• OT — Off-Topic
• ASIAA — Academia Sinica Institute of Astronomy and Astrophysics
• GSOWG — Ground Systems Operations Working Group
• TR — TRansit

• MLSO — Mauna Loa Solar Observatory
• CVAS — Chippewa Valley Astronomical Society
• ACM — Asteroids Comets Meteors
• IPPPSSOOT — file naming convention for HST data sets
• SR — Spectral Recording
• FAME — Full-sky Astrometric Mapping Explorer
• STDN — Satellite Tracking and Data Network
• SESD — Science and Engineering Systems Division
• LMSC — Lockheed Missile and Space Corporation
• O — Oblivion
• SPIRIT — SPace InfraRed Imaging Telescope
• GOX — Gaseous Oxygen
• AEG — Astro Event Group
• HLO — High Light Output
• XANES — X-Ray Near Edge Spectroscopy
• PTF — Palomar Transient Factory
• CHZ — Circumstellar Habitable Zone
• AP.J — Astrophysical Journal
• SMC — Small Magellanic Cloud
• MV — absolute visual magnitude
• DM — Dark Matter
• DIN — Day Into Night
• UKIDSS UKIRT — Infrared Deep Sky Survey
• IPPW — International Planetary Probe Workshop
• ACS — Actuator Control System
• WISARD — Web Interface for Searching Archival Research Data
• ADAS — Asiago DLR Asteroid Survey
• ISEE — International Sun Earth Explorer
• PDA — Photon Detector Assembly
• CANX — Canadian Advanced Nanospace Experiments
• TO — target of opportunity
• MUF — Mysterious Unknown Force
• SCOA — Smithsonian Contributions to Astrophysics
• PFS — Percent Full Scale
• WHAC — West Hawaii Astronomy Club
• WINAR — Windsor Observatory Annual Report
• SALT — South African Large Telescope
• MXRB — Massive X-Ray Binary
• SDP — science data packet
• NOMAD — Naval Observatory Merged Astrometric Dataset
• IDMP — International Daylight Measurement Program
• SVPHA — Soviet Physics Astronomy
• AST — Astrometry Science Team
• SAGA — Solar Array Gain Augmentation
• SQPN — staggered quadriphase pseudo-random noise
• UNPSA — United Nations Programme on Space Applications
• BST — British Summer Time [GMT 0100]
• WSAL — Winston-Salem Astronomical League
• STIF — Science and Technology Information Facility
• SIAF — Science Instrument Aperture File

• SOARD — Steward Observatory Asteroid Relational Database
• CADC — Canadian Astronomical Data Center
• LMC — Large Magellanic Cloud
• SVAL — Soviet Astronomy Letters
• KAO — Kuiper Airborne Observatory
• TRES — Transatlantic Exoplanet Survey
• WFCAM — Wide Field Camera
• TT — Terrestrial Time
• CCL — Closed Conference Loop
• DOV — Director of Orbital Verification
• SBIG — Santa Barbara Instrument Group
• RTC — Researching The Cosmos
• SQIID — Simultaneous Quad Infrared Imaging Device
• CFCP — Center for Cosmological Physics
• SRAA — Scenic Rim Astronomy Association, Inc.
• CXO — Chandra X-ray Observatory
• LONEOS — Lowell Observatory Near-Earth-Object Search
• IRAC — Infrared Array Camera
• MS — Mission Schedule
• LMXB — Low-Mass X-Ray Binary
• ODL — Observation Data Log
• LRG — Luminous Red Galaxy
• PEPE — Plasma Experiment for Planetary Exploration
• GEIS — Generic Edited Information Set
• RLOF — Roche Lobe Overflow
• ♆ — Neptune
• FDI — failure detection and isolation
• PTF — Payload Test Facility
• ICRC — International Cosmic Ray Conference
• WIRE — Wide-Field Infrared Explorer
• VISTA — Visible and Infrared Survey Telescope for Astronomy
• SIPS — Southern Infrared Proper Motion Survey
• ASKAP — Australian Square Kilometre Array Pathfinder
• NSBD — Normal Stars and Brown Dwarfs
• CIBR — Cosmic Infrared Background Radiation
• RRL — RR Lyrae
• MGS — Mars Global Surveyor
• SPS — Solar Power Satellite
• MYSO — Massive Young Stellar Object
• TECU — Technology and Culture
• QPSK — quadriture phase shift keying
• ADOR — Astrometry and Design Operations Review
• PSR — Pulsar
• EOSL — Earth Observation Systems Laboratory
• PMDB — Project Management Data Base
• MEPCO — Meeting of European Planetary and Cometary Observers
• SMOV — Servicing Mission Observatory Verification
• OMC — Orion Molecular Cloud
• VPU — video processing unit
• WSGS — White Sands Ground Station

• SFC — Space Forecast Center
• XBP — X-Ray Bright Point
• SOFA — Standards of Fundamental Astronomy
• QBSA — Quarterly Bulletin on Solar Activity
• SDM — Secondary Deployment Mechanism
• SIMM — Standard Inline Memory Module
• DBSA — Database and System Administration team
• DBW — decibel reference to 1 watt
• SSRV — Space Science Reviews
• IRCS — Infrared Camera and Spectrograph
• UST — Universal Standard Time
• EME — Earth-to-Moon-to-Earth
• SAS — Science Analysis Software
• NPS — North Polar Sequence
• NAO — National Astronomy Olympiad
• EAPJ — Electronic AstroPhysical Journal Letters
• CDMH — Cold Dark Matter Haloes
• CNO — Carbon-Nitrogen-Oxygen
• NEP — North Ecliptic Pole
• OPUS — OSS and PODPS Unified Systems
• GSY — Galactic Standard Year
• ORFEUS — Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer
• SWAN — Solar Wind ANisotropy
• TARDIS — The Apparatus for Really Distant Interstellar Sojourns
• HETE-2 — high energy transient explorer
• MONS — Measuring Oscillations in Nearby Stars
• SSRT — Single Stage Rocket Technology
• IAPPP — International Amateur/Professional Photoelectric Photometry
• SEB — Source Evaluation Board
• ISPM — International Solar Polar Mission
• OC — Open Cluster
• ASP — Analog Signal Processor
• TAL — Transatlantic Landing
• LTM — Like The Moon
• JOP — Joint Observing Program
• LDE — Long Duration Event
• SSP — Surface Science Packages
• RWA — Reaction Wheel Assembly
• GAAC — Gloucester Area Astronomy Club
• COMICS — Cooled Mid-Infrared Camera and Spectrometer
• UV-VIS — Ultraviolet - Visible
• SUPRIME — SUbaru PRIME focus CAMera
• LETGS — Low Energy Transmission Gratings Spectrometer
• ARTEMIS — Advanced Relay TEchnology MISsion
• FAST — Fast Auroral Snapshot Explorer
• LENA — Low Energy Neutrino Astronomy
• MLRS — McDonald Laser Ranging Station
• SAT — Synthetic Aperture Telescope
• NEAP — Near Earth Asteroid Prospector
• CSS — Catalina Sky Survey

• SINGS — Spitzer Infrared Nearby Galaxies Survey
• DOS — Degrees Of Separation
• NLTT — New Luyten Two-Tenths
• ETRD — Engineering Tape Recorded Data
• PNNV — Planetary Nebula Nucleus Variable
• EA — Eclipsing Algol
• START — Solar Thermal Analysis Review and Training
• WYAS — West Yorkshire Astronomical Society
• AAS — Archaeology Astronautics and Seti
• OSCAR — Orbital Satellite Carrying Amateur Radio
• WAPP — Wide-base Arecibo Pulsar Processor
• SPP — Subset Preprocessor
• SAMPEX — Solar Anomalous And Magnetospheric Particle Explorer (spacecraft)
• TAI — International Atomic Time (Temps Atomique International) [to 2015 July 1st, 35s ahead of UTC; from 2015 July 1st, 36s ahead of UTC.]
• VRSD — Verification Requirements and Specifications Document
• PAR — Photon Activity Rate
• CM — Critical mass
• AER — Astronomy Education Review
• CBS — Contract and Business Services
• MPPG — Mars Program Planning Group
• SEST — Swedish-ESO Submillimetre Telescope
• SITB — System Integration and Testing Branch
• SGRA — School of Galactic Radio Astronomy
• SSSPM — SuperCOSMOS Sky Survey Proper Motion
• LOTOSS — Lick Observatory and Tenagra Observatory Supernova Searches
• BOAO — Bohyunsan Optical Astronomy Observatory
• IIPS — Interactive Image Processing System
• MKO — MAUNA KEA OBSERVATORY
• BCVS — Bibliographic Catalogue of Variable Stars
• SLTV — System Level Thermal Vacuum
• IDM — Intelligent Database Machine
• PSL — Program Support Library
• AAAM — Active Amateur Astronomers of Maryland
• TAAS — The Albuquerque Astronomical Society
• CIP — Celestial Intermediate Pole
• SFS — Smallest Feature Size
• SCO — Software Change Order
• BCEP — Beta CEPhei
• SXG — Spectrum-X-Gamma
• WAA — Wiener Arbeitsgemeinschaft für Astronomie
• CEO — Corporate Europe Observatory
• Z — Redshift Factor
• IRAIT — International Robotic Antarctic Infrared Telescope
• RAMBO — Robust associations of massive baryonic objects
• ITT — International Telephone and Telegraph Corporation
• ORB — Observatoire Royal de Belgique (Royal Observatory of Belgium)
• WIYN — Wisconsin Indiana Yale NOAO Telescope Consortium
• RPO — Research Programs Office
• MWO — Mount Wilson Observatory
• WF/PC — Wide Field/Planetary Camera

• MLPS — Mid-Latitude Plasma Structuring
• LOTIS — Livermore Optical Transient Imaging System
• IBBTF — Imagination Baffled By The Facts
• ERRSAC — Eastern Regional Remote Sensing Applications Center
• CODMAC — Committee on Data Management and Computing
• MICO — Multi-year Interactive Computer Almanac
• STR — Science Tape Recorder
• P&A — Physics and Astronomy
• UKIRT — United Kingdom Infrared Telescope
• XMM — X-ray Multi- Mirror satellite
• TTC — telemetry, tracking, and command
• DIB — Diffuse Interstellar Band
• CTTS — Classical T Tauri Star
• DN — Digital Number
• CG — Cometary Globule
• GASA — Graduate Astronomy Students Association
• MIDAS — Munich Image Data Analysis System
• PEP — PhotoElectric Photometry
• MOTV — Manned Orbital Transfer Vehicle
• SS — Safing System
• GRAB — Galactic Radiation and Background
• NODO — NASA Orbital Debris Observatory
• DS — Dwarf Star
• EVAC — East Valley Astronomy Club
• OSSO — Observation Science Support Office
• MOID — Minimum Orbit Intersection Distance
• BDEC — Bendix Field Engineering Corporation
• SWEEPS — Sagittarius Window Eclipsing Extrasolar Planet Search
• ♄ — Saturn
• RCS — Readiness Control System
• ESIS — European Space Information System
• AMASE — Astrophysics Multi-Spectral Archive Search Engine
• REPT — Relativistic Electron-Proton Telescope
• CCF — Cosmogenic Correlation Factor
• SIRD — Support Instrumentation Requirements Document
• RMS — Remote Manipulator System
• GRB(S) — gamma ray burst(s)
• BOSS — Bullet Of Super Speed
• UGWZ — UG WZ Sagittae
• OCST — Office of Commercial Space Transportation
• NGST — Next Generation Space Telescope
• FRB(S) — gamma ray burst(s)
• EPAO — Educational and Public Affairs Office
• TC — Test Conductor (Controller)
• MMTO — Multiple Mirror Telescope Observatory
• WKAA — West Kentucky Amateur Astronomers
• OSS — Office Of Space Science (NASA)
• TFOV — target field of view
• CSO — Caltech Submillimeter Observatory
• SEA — Sensor Electronics Assembly

• MW — Milky Way
• CRAQ — Centre for Research in Astrophysics of Québec
• GMC — Giant Molecular Cloud
• FMS — forms management system
• PORTS — Preliminary Operations Requirements and Test Support
• WGSS — Working Group of Standard Stars
• OPB — Observation Planning Branch
• CTRF — Celestial and Terrestrial Reference Frames
• RAG — Radio Astronomy Group
• SJC — slit jaw camera
• ARAS — Astronomical Ring for Access to Spectroscopy
• FGS — Fine Guidance Sensors
• GRU — Ground Replaceable Unit
• HESI — High Energy Solar Imager
• SWIRE — Spitzer Wide-area InfraRed Extragalactic survey
• MTL — Mission Time Line
• DCX — Delta Clipper Experimental
• SPSO — Science Program Selection Office
• MOR — Mission Operations Room
• UMS — Upper Main Sequence
• SUGRA — Supergravity
• DSOS — Dish Surface Optimization System
• SPSS — Science Planning and Scheduling System
• ASTRO — Autonomous Space Transport Robotic Operations
• CGRO — Compton Telescope
• TAMS — Terminal Age Main Sequence
• R&R — Reproducibility And Repeatability
• EGRET — Energetic Gamma-Ray Experiment Telescope
• ISSA — Infrared Sky Survey Atlas
• TIC — Tycho Input Catalog
• STIC — Space Telescope Institute Council
• AH — Asteroid Hunt
• TPI — Technical Proposal Instructions
• LC — Las Campanas observatory
• AWG — Astronomy Working Group
• DES — Dark Energy Survey
• GSSS — Guide Star Selection System
• PSR — Project Status Review
• CASB — Catalogs and Survey Branch
• UMCP — University of Maryland College Park
• GCC — Globular Cluster Candidate
• EU — Extended Universe
• MAST — Multimission Archive at Space Telescope
• WFPC2 — Wide Field Planetary Camera-2
• PFM — Pre-Flight Module
• EFRF — Earth Fixed Reference Frame
• XIS — X-ray Imaging Spectrometer
• BHAS — Black Hills Astronomical Society
• EMU — Extra-vehicular Mobility Unit
• ICF — Intrinsic Correlation Function

• OGLE — Optical Gravitational Lensing Experiment
• STOCC — Space Telescope Operations Control Center (GSFC, Greenbelt MD)
• DCA — Detector Control Assembly
• WIYN — Wisconsin, Indiana University, Yale University, and NOAO (National Optical Astronomy Observatories) Observatory
• BASIS — Burst and All-Sky Imaging Survey
• PSI — Planetary Science Institute
• EBA — Electronics Bay Assembly
• QHO — Quail Hollow Observatory
• LSO — Large Solar Observatory
• SCUBA-2 — Submillimetre Common User Bolometer Array 2
• EO — Earth Observatory
• EARS — Electrostatic Atmospherics Radio Sensor
• LWR — Long Wavelength Redundant
• PNS — Pulsed Neutron Source
• OCX — observation comments file
• RC — Reference Catalogue
• SCP — Small Computer Systems Interface
• APASS — AAVSO Photometric All-Sky Survey
• VFIR — Very Far Infra-Red
• HDOS — Hughes Danbury Optical Systems (Danbury CT)
• ACTS — Advanced Communications Technology Satellite
• WASP — Wide Angle Search for Planets
• CSM — Circumstellar Material
• PACS — Photoconductor Array Camera and Spectrometer
• WFPC — Wide Field and Planetary Camera
• SFU — Space Flier Unit
• SWRI — Southwest Research Institute
• CGSS — Catalogue of Galactic S Stars
• OV — Orbital Verification
• IPE — Initial Pointing Error
• PSR — Pulsar Supernova Remnant
• SAM — Sample Analysis of Mars
• SNU — Solar Neutrino Units
• PROPLYD — Protoplanetary Disk
• SS — System Simulator
• TRB — Test Review Board
• SJR — Software Justification Report
• SET — Science, Engineering and Technology
• ILOC — International Lunar Occultation Center
• SID — Software Implementation Directive
• INFOL — Ingredient Necessary FOr Life
• ATLAS — Advanced Technology Large-Aperture Space Telescope
• IRAF — Image Reduction and Analisys Facility
• CMC — Carlsberg Meridian Catalogue
• CXBR — Cosmic X-ray Background Radiation
• ICSO — International Conference on Space Optics
• MVAC — Mission Valley Astronomy Club
• WFIS — Wide-Field-of-view Imaging Spectrometer
• QV — quick visual
• WFPC2 — Wide Field and Planetary Camera 2

• BCD — Blue Compact Dwarf
• UGC — Upsala General Catalog
• CRSR — Center for Radiophysics and Space Research
• PASP — Proceedings of the Astronomical Society of the Pacific
• SPIF — Shuttle/POCC Interface Facility
• FPSA — FPA Structure Assembly
• VVDS — VIMOS-VLT Deep Survey
• PMS — Pre–Main Sequence
• NS — Neutron Star
• NAIF — Navigation Ancillary Information Facility
• OAOT — Orbiting Astronomical Observatory Technology
• SER — Systems Engineering Report
• TML — Total Mass Loss
• LFAE — Light Field Attribute Explorer
• WDS — Washington Double Star
• PDS — Photometric Data Systems
• IMAGE — Imager for Magnetopause to Auroral Global Exploration
• BITP — Bogolyubov Institute for Theoretical Physics
• CFHT — Canada-France-Hawaii Telescope
• DVA — Detector Vacuum Assembly
• XSC — Extended Source Catalog
• MOE — Moon Of Earth
• CSLG — Campus-wide Software License Grants Program
• BATTERS — Bisei Asteroid Tracking Telescopes for Rapid Survey
• SPD — Science Programs Division
• SIF — Science Instrument Formatter
• PDBI — Plateau de Bure Interferometer
• RORF — Radio/Optical Reference Frame
• FEAT — Fine Error Averaging Test
• RGA — Rate Gyro Assembly
• IOTA — Infrared-Optical Telescope Array
• RAPT — Reynolds Amateur Photometry Team
• BRAS — Baton Rouge Astronomical Society
• RSB — Research Support Branch
• FSM — First Servicing Mission
• EMP — Ephemerides of Minor Planets
• SIPE — Science Instrument Protective Enclosure
• PROS — Post Reduction Offline Software
• FGSAA — FGS Access Area
• CEP — CEPheid
• VIMOS — Visible Multiobject Spectrograph
• UKSA — United Kingdom Space Agency
• SARDS — Solar Active Region Display System
• CSE — Circumstellar Envelope
• AGAPE — Andromeda Galaxy and Amplified Pixels Experiment
• BHC — Black Hole Candidate
• NGC — New General Catalog
• SCMS — STScI Code Management System
• SDA — Science Data Analyst Small Computer Systems Interface
• IPS — Inertial Pointing System

• PEPSI — PEP System
• CHIP — Cosmic Hot Interstellar Plasma
• BHXRT — Black Hole X-Ray Transient
• SSO — Special Studies Office
• MMF — Moving Magnetic Feature
• SCARS — Science Computing & Research Support Division
• AB — Archive Branch
• BRAVO — Back-End Redesign for Added Value for Observers
• ASCH — Alien Societies Culture And History
• SSD — Science Support Division
• SRC — Science Research Council (formerly DSIR) (U.K.)
• SEST — Swedish ESO Submillimeter Telescope
• HLC — Heavy Lift Capability
• ASW — Address and Synchronization Word
• TCG — Geocentric Coordinate Time
• IAUC — IAU Circular
• BF — Broadening Function
• SOFIA — Stratospheric Observatory for Infrared Astronomy
• RTC — Real-Time Command
• DE — Detector Efficiency
• PPF — Payload Processing Facility (USAF)
• EOR — End of Record
• MUSTANG — Multiplexed SQUID TES Array at Ninety GHz
• RNGC — Revised New General Catalog
• CMCC — Central Mission Control Centre
• SRS — Southern Reference Star
• CDBS — Calibration Data Base System
• SDF — Science Data Formatter
• ACPG — Astronomical Community Participation Group
• UVCS — Ultraviolet Coronal Spectrometer
• PZT — Photographic Zenith Tube
• DRAA — Durham Regional Astronomical Association
• PRESTO — Project to Re-Engineer Space Telescope Observing
• HERA — Hermes Robotic Arm
• PASS — POCC Application Software Support
• IMSL — International Mathematical and Statistical Library
• SETG — Search for Extra-Terrestrial Genomes
• MPCS — Minor Planet circulars Supplement
• MBA — Main-Belt Asteroid
• CRRES — Combined Release Radiation Effects Satellite
• MUNICS — MUnich Near-Infrared Cluster Survey
• ORD — Operations Requirements Document
• IYA — International Year of Astronomy
• AOA — ASCA Online Arxiv
• EED — Extracted Engineering Data
• TAROT — Télescope à Action Rapide pour les Objets Transitoires
• WTTM — WIYN (Wisconsin, Indiana University, Yale University, and NOAO (National Optical Astronomy Observatories) Observatory) Tip-Tilt Module
• TAC — telemetry and command processor
• LDS — Luyten Double Star
• VCC — Virgo Cluster Catalog

• SCT — Schmidt-Cassegrain Telescope
• SV — Science Verification
• ATCA — Australia Telescope Compact Array
• SSC — Science Support Center
• STAT — Space Telescope Astrometry Team
• HPR — Hardware Problem Report
• RCI — Rodent Cage Interface
• DDA — Division on Dynamical Astronomy
• CMT — Carlsberg Meridian Telescope
• TWA — TW Hydrae Association
• UAO — University of Arizona Observatories
• BLO — Bl Lac Object
• ODX — Occular Dynamic eXperiment
• CINEOS — Campo Imperatore Near-Earth Object Survey
• MPP — Multi-Pinned-Phase
• SPC — Short Period Comets
• TBC — Time Base Correctors
• NLDP — National Launch Development Program
• NTR — Nuclear Thermal Rocket
• SGC — Southern Galaxy Catalogue
• LOFAR — Low Frequency Array
• CISCO — Cooled Infrared Spectrograph and Camera for OHS
• APSB — Advance Planning Systems Branch
• RSG — Red Super Giant
• GIMP — Geomagnetically Induced Motion Problem
• ECEF — EarthCentered EarthFixed
• HVPS — High Voltage Power Supply
• EOL — Earth Observing Laboratory (formerly ATD)
• SWF — ShortWave Fading
• GMOS — Gemini Multi-Object Spectrographs
• BZ — Brillouin zone - a uniquely defined primitive cell in reciprocal space
• MRSR — Mars Rover and Sample Return
• IRD — Interface Requirements Document
• MCG — Morphological Catalog of Galaxies
• NESS — Near Earth Space Surveillance
• MOSS — Moving Object Support System
• ELIAS — European Large Area ISO Survey
• TSRS — Trieste Solar Radio System
• PPM — Positions And Proper Motions (catalog)
• IWCA — International Workshop on Cometary Astronomy
• SEI — Space Exploration Initiative
• DIG — Dwarf Irregular Galaxy
• DSOB — Data Systems Operations Branch
• BIMA — Berkeley-Illinois-Maryland Array
• EUSO — Extreme Universe Space Observatory
• VMOA — Valley of the Moon Observatory Association
• GRS — Great Red Spot
• IRAF — Image Reduction Analysis Facility
• BSS — Bigelow Sky Survey
• SIS — SETI (Search for Extra-Terrestial Intelligence) Intercept System

• CBP — Collateral Benefits Plan
• STAN — Space Telescope Analysis Newsletter
• GDSO — Georgi Dobrovolski Solar Observatory
• TAAA — Tucson Amateur Astronomy Association
• SHL — Science Header Line
• TASS — The Amateur Sky Survey
• FGC — Flat Galaxy Catalogue
• OCB — Operational Configuration Baseline
• WFAU — Wide-Field Astronomy Unit
• ULE — Ultralow Expansion
• TSI — Total Solar Irradiance
• WIYN — Wisconsin/Indiana/Yale/NOAO Telescope
• SIS — Superconductor-Isolator-Superconductor
• CCSN — core-collapse supranovæ
• LSA — Large Science Aperture
• CCDS — Centers for the Commercial Development of Space
• OAO — Orbiting Astronomical Observatory
• CMOS — Complimentary Metal Oxide Semiconductor
• WHDF — William Herschel Deep Field
• PBO — Pine Bluff Observatory
• LN2 — liquid N2
• ASWG — ATST (Advanced Technology Solar Telescope) Science Working Group
• WRO — Warren Rupp Observatory
• ECA — Earth-Crossing Asteroid
• NEAT — Near Earth Asteroid Tracking
• DE — Dwarf elliptical
• DNS — Double Neutron Star
• INSY — International Near Space Year
• IUESIPS — Iue Spectral Image Processing System
• UESAC — Uppsala-ESO Survey of Asteroids and Comets
• CTIO — Cerro Tololo Inter-American Observatory
• SAR — Software Analysis Room
• NAAP — Nebraska Astronomy Applet Project
• OPD — Operations and Data Processing Division
• NIU — NASCOM Interface Unit
• DRAO — Dominion Radio Astrophysical Observatory
• SAM — Small Angle Maneuver
• DMS — Daily Mission Schedule
• CNES — Centre National d'Etude Spatiales
• STAC — Space Telescope Advisory Council
• FASTT — Flagstaff Astrometric Scanning Transit Telescope
• SSB — Space Science Board (NRC)
• SMC — Standard Model of Cosmology
• OW — Outer Wall
• BPM — Bruce Proper Motion
• STEPS — STEllar Planet Survey
• CVP — Continuously Variable Planetary
• RS — Resource Scheduler
• CCO — Central Compact Object
• TCS — Thermal Control System (Subsystem)

• NLST — National Large Solar Telescope
• FCC — Fornax Cluster Catalog
• SMO — Servicing Mission Office
• CGCS — Catalogue of Galactic Carbon Stars
• MMA — Milli Modulation Amplitude
• IARA — Italian Amateur Radio Astronomy
• STL — science trailer line
• MSO — Mount Stromlo Observatory
• ACA — Atacama Compact Array
• OPR — Operations Problem Report
• MOXE — MOnitoring X-Ray Experiment
• PFI — Partial Frame Image
• ENACS — ESO Nearby Abell Cluster Survey
• NTT — New Technology Telescope
• MRO — Mars Reconnaissance Orbiter
• SEP — System Enhancement Plan
• CC — Candidate Companion
• ECT — Equator Crossing Time
• PRR — preliminary requirements review
• HDF — Hubble Deep Field
• SOFA — Selectable Optical Filter Assembly
• UGSU — UG SU Ursae Majoris
• ACT — Astrographic Catalog Tycho
• GEM — Galileo Europa Mission
• SXARI — SX ARIetis
• SPG — Special Projects Group
• MPIA — Max Planck Institute for Astronomy
• SMM — science mission management
• TESS — Transiting Exoplanet Survey Satellite
• BMO — Black Moving Object
• HBOP — Hale-Bopp comet
• VSSC — Vikram Sarabhai Space Centre
• ULYSSES — Ultraviolet LibrarY of Spectra for Star-forming Environments
• TAU — Thousand Astronomical Unit
• SCRT — Stockholm Centimetre Radio Telescope
• GKS — Graphic Kernel System
• APT — Automated Patrol Telescope
• SDD — Single Dish Data
• MACO — Mars Atmospheric Constellation Observatory
• ITA — Institute of Theoretical Astronomy
• ACYG — Alpha CYGni
• IETI — Invitation to ExtraTerrestrial Intelligence
• WFS — Wave Front Sensor
• MAS — milliarcsecond
• CIO — Catalog of Infrared Observations
• ILRT — intermediate-luminosity red transients
• WBFI — Wide Band Filter Imager
• SUSI — Sydney University Stellar Interferometer
• WMKO — W. M. Keck Observatory
• TAC — The Astronomy Connection

• OAO — Okayama Astrophysical Observatory
• DSN — deep-space network
• RSFC — Radially Stratified Flame Core
• IAAC — Internet Amateur Astronomers Catalog
• SVA — Soviet Astronomy
• MSE — Milton S. Eisenhower library
• LADC — Longitudinal Atmospheric Dispersion Compensator
• WSO — World Space Observatory
• REM — Rat Enclosure Module
• SSS — SuperCOSMOS Sky Surveys
• GRAND — Gamma Ray and Neutron Detector (NASA)
• IRIS — InfraRed Imaging Surveyor
• LPCI — Lunar Phases Concept Inventory
• OSG — Observatory Support Group
• AET — Accuracy Enhancing Technology
• PCAS — Planet-Crossing Asteroid Survey
• SPARC — Space Physics Aeronomy Research Collaboratory
• PMIRR — Pressure Modulated InfraRed Radiometer
• STVSW — Space Telescope Verification Software
• UG — U Geminorum
• MBH — Massive Black Hole
• EB — Eclipsing Beta
• SCP — Science Data Analyst
• MUSES — MU Space Engineering Spacecraft
• SPAM — Special People Admiring Meteors
• ISGRI — INTEGRAL Soft Gamma-Ray Imager
• BAC — Bordeaux Astrographic Catalog
• EOT — End Of Tape
• NEAF — North East Astronomy Form
• WDS — Washington Double Star Catalog
• PRB — Preliminary Review Board
• LSB — Low Surface Brightness
• ESB — Engineering Support Branch
• SGD — Solar Geophysical Data
• PWLA — Portable Work Light Assembly
• EMB — Earth Moon Barycenter
• AUDS — ALFA Ultra Deep Survey
• PNN — Planetary Nebula Nucleus
• UGWZ — U Gem variable type star (WZ Sagittae sub-type)
• NAIC — National Astronomy And Ionosphere Center
• OMS — Observatory Monitoring System
• XRB — X-Ray Background
• JKT — Jacobus Kapteyn Telescope
• WFAO — Wide Field Adaptive Optics
• FIRST — Faint Images of the Radio Sky at Twenty-centimeters
• LLNL — Lawrence-Livermore National Laboratory
• FSS — Flight Servicing System
• LB — Long Base
• CSM — Central Star Magnitude
• RTA — Real Time Activity

• ECA — Electronics Control Assembly
• WLWG — Weak Lensing Working Group
• MPEC — Minor Planets Electronic Circular
• WMAP — Wilkinson Microwave Anisotrophy Probe
• OCO — Oort Cloud Object
• VERA — VLBI Exploration of Radio Astrometry
• VMO — Valley of the Moon Observatory
• LSVT — Large Solar Vacuum Telescope
• AOSS — AURA Observatory Support Services
• SSU — Steady State Universe
• DN — Data Number
• SIMA — Secondary Mirror Incremental Motor Actuator
• SZE — Sunyaev-Zeldovich Effect
• HMC — Halley Multicolor Camera
• HRA — High Resolution Apodizer
• ARGUS — Astronomical Research Group Under Stars
• WYBT — Whole Year Blazar Telescope
• SDSSP — Sloan Digital Sky Survey provisory
• MS — Meteor Scattering
• SMA — Submillimeter Array
• EPOS — European Project on the Sun
• RMS — Republic Management Systems, Inc.
• OASI — Orwell Astronomical Society (Ipswich)
• SVWG — Science Verification Working Group
• SIB — Science Instrument Branch
• LST — Large Stellar Telescope
• BS — Burrell Schmidt telescope
• HTFA — High Temperature Flowing Afterglow
• WFMOS — Wide-Field Multi-Object Spectrograph
• NDV — NASP Derived Vehicle
• UT — Universityrsal Time
• TSS — Targeted Search System
• NFAR — Near Field Apertureless Raman
• OSC — Orbital Sciences Corporation
• RE — ROSAT (ROentgen SATellite) EUV (Extreme Ultra-Violet)
• SSLB — Steady-State Leaky-Box
• HGD — Hot Gas Discharge
• BSG — Blue SuperGiant
• CMD — Color-Magnitude Diagram
• PK — Perek-Kohoutek
• CRAF — Committee on Radio Astronomy Frequencies
• NFF — New Firm Formation
• HMSF — High Mass Star Formation
• AC — Ascendant Cusp
• ALTS — Astronomy Lunch Time Seminar
• SCCCB — Science Computing Configuration Control Board
• AIM — Aeronomy of Ice in the Mesosphere
• SMM — Spectro-Mirror Mechanism
• AMSU — Advanced Mass Spectrometry Unit
• WDMF — White Dwarf Mass Function

• LINEAR — Lincoln Near Earth Asteroid Research
• LIC — local interstellar cloud
• UMP — Ultra Metal-Poor
• DRD — Data Requirements Document
• SPST — Science Planning and Scheduling Team
• VOS — Virtual Operating System
• LV — Lunette Verte
• TTS — T Tauri Star
• BB — Black-body
• FIGV — Factor Inercial de Ganho solar do enVidracado
• SEP — Solar Energetic Particle
• VLB — Very Long Baseline
• DDF — Directors Discretionary Funds
• STIS — Space Telescope Imaging Spectrograph
• WACL — Wide Angle Converter Lens
• LM — Low Mass
• ULX — Ultra-Luminous X-ray source
• LTP — Lunar Transient Phenomenon
• AP — Astral Projection
• STFS — Space Telescope Flight Software
• SSDA — Solar System Data Archive
• CGCS — Cool Galactic Carbon Star
• SN — SuperNova
• AZA — Analiza Zanieczyszczenia Atmosfery
• BCD — Basic Calibrated Data
• QPP — Quasi-Periodic Oscillation
• SDAS — Scarborough And District Astronomy Society
• ORR — Orbit Readiness Review
• AN — Astronomische Nachrichten
• RS — Reed-Solomon error detection
• LTSA — Long-Term Space Astrophysics
• SDS — Star Diagnosis System
• BLAST — Balloon-borne Large Aperture Submillimeter Telescope
• GPB — Group Parameter Block
• MOMV — Manned Orbital Maneuvering Vehicle
• FFI — Full Frame Image
• DAV — Deerlick Astronomy Village
• DCB — Design Change Board
• ADS — Aitken Double Stars
• SSPS — Sky Survey Prototype System
• GSP — General Support Pool
• MFP — magnetic field perturbation theory
• VLM — Very Low Mass
• LEST — Large Earth-based Solar Telescope
• TALC — The Astronomy Learning Center
• NT — Non-Thermal
• HAC — Huachuca Astronomy Club
• LP — Luyten Palomar
• CCAS — Cape Cod Astronomical Society
• PGC — Principal Galaxy Catalog

• WXM — Wide-field X-ray Monitor
• MWD — Magnetic White Dwarf
• ADH — Average Daily Hours
• NIR — Near Infrared Research
• SMS — Sun Moon and Stars
• DCL — Digital Control Language
• MIPS — Multi-band Imaging Photometer
• PO — Primary Object
• CRL — Compound Refractive Lens
• IV — intra vehicular
• SM — Safe Mode
• SMASH — Survey of MAgellanic Stellar History
• EPD — Expected Planetary Differences
• SCL — Service Control Level
• IGI — Interactive Graphics Interpreter
• SFN — Star Formation Newsletter
• CSI — Catalog of Stellar Identification
• SXPHE — SX PhoEnicis
• NSC — Nuclear Star Clusters
• MPAS — Mornington Peninsula Astronomical Society
• GBT — Green Bank Telescope
• NGT — Next Generation Telescope
• NCSA — National Center for Supercomputer Applications (Urbana IL)
• RX — ROSAT X-ray
• BAV — Bundesdeutsche Arbeitsgemeinschaft fur Veraenderliche Sterne
• CRTS — Centre Royal de Teledetection Spatiale
• PWHHO — Publications of West Hendon House Observatory, Sunderland
• UHTC — Ultra High Transmission Coatings (Meade)
• EGP — Extrasolar Giant Planet
• PSS — Palomar Sky Survey
• SIPS — Spectral Image Processing System
• SBUV — Solar Blind Ultra- Violet
• IB — Interstellar Band
• NIP — Normal Incidence Point
• IVC — Institute Visiting Committee
• IMOA — International Museum of Astronomy
• ERO — Extremely Red Object
• SPD — Southern Polar Distance
• LOFAR — Low-Frequency Array
• STSWG — Space Telescope Science Working Group
• SOB — Science Observatory Branch
• ATM — Amateur Telescope Making
• PNG — Planetary Nebulae, Galactic
• PLS — Palomar-Leiden Survey
• ECO — Earth crossing object
• CT — Cerro Tololo
• LS — List Star
• CODE — Creation Out of Deep Energy
• LDN — Lynds Dark Nebulae
• UGZ — U Gem variable type star (Z Camelopardalis subtype)

• ALIS — Airborne Laser Isotope Spectrometer
• EBL — Extragalactic Background Light
• MR — Moonlight Rising
• ULD — Ultra-wide Low- Distortion lens
• PWD — Pre-White Dwarf
• ICET — International Center for Earth Tides
• DAG — Doğu Anadolu Gozlemevi
• MMTF — Maryland-Magellan Tunable Filter
• SSB — Science Software Branch
• MOM — Mars Orbiter Mission
• CIDA — Cometary Interplanetary Dust Analyzer
• SF — Star Formation
• VTT — Vacuum Tower Telescope
• PVTEL — PV TELescopii
• SUPARCO — Space & Uppar Atmosphere Research Commission
• ETR — Engineering Tape Recorder
• SPYBAL — spectrum Y balance
• AA — Academic Affairs
• MMR — Mean-Motion Resonance
• US/PS — see PRESTO
• SSG — Science Software Group
• SSA — Star Selector Assembly
• NDC — Network Data Center
• FPAS — FPA Shroud
• CAL — Casual Astronomy League
• SFD — SXT Full Disk
• SHP — Standard Header Packet
• WBS — Wide Band Spectrometer
• OAD — Office for Astronomy Development
• BO — Biological Origin
• AD — Astronomsko Drustvo
• TLE — Total Lunar Eclipse
• SEP — South Ecliptic Pole
• TDT — Terrestrial Dynamical Time
• CCS — Cool Carbon Star
• NEAS — Near Earth Asteroids
• SN — Signal-to-Noise
• WFPCII — Replacement For WFPC
• STARS — Seismic Telescope for Astrophysical Research from Space
• WSF — Wake Shield Facility
• IFO — Identified Flying Object (see Also UFO)
• VPO — VISTA Project Office
• HRC — High Resolution Camera
• EDB — Engineering Data Base
• NGP — North Galactic Pole
• L — Lagrange
• EVGA — European VLBI Group for Geodesy and Astrometry
• NC — Numerical Cosmology
• FFD — First Fixation Duration
• ULIRG — Ultraluminous Infrared Galaxy

• NSUM — Non-Spatial Universal Mechanics
• NVR — nonvolatile residue
• OST — Observation Sequence Table
• CAMC — Carlsberg Automatic Meridian Circle
• TIB — Telescope Instrument Branch
• SAO — Swinburne Astronomy Online
• CTA — Computer Technology Associates (GSFC)
• HSC — Hierachical Storage Controller
• STS — Shuttle Transport System
• TSS — Texas supernova survey
• HS — horizontal system
• TAA — Tasmanian Amateur Astronomers
• MHGL — Mexican Hat Gravitational Lens
• SCAC — Science Computing Advisory Commitee
• TAL — Teleskop Astronomi Lyubitel
• CHSS — Century Halo Star Survey
• L — Luyten
• LHS — Luyten Half-Second
• BD — Brown Dwarf
• IRAM — Institut de Radio Astronomie Millimetrique
• VPO — Virtual Public Observatory
• VF — Variable Frequency
• CCO — Catalogue of Cometary Orbits
• RSI — Research Systems, Inc.
• SIP — Software Implementation Plan
• ISPP — In-Situ Propellant Production
• NOT — NOrdic Telescope
• SSC — STEIS Steering Committee
• RSDP — Routine Science Data Processing
• CIAO — Coronagraphic Imager with Adaptive Optics
• NSA — Neutron Star Atmosphere
• UVOT — Ultraviolet Optical Telescope
• WFAP — Wide Field Astronomy Panel
• TAOS — Taiwan American Occultation Survey
• CG — Central Galaxy
• LTT — Luyten Two-Tenths
• SIDS — SI Detector System
• JAC — Japan Astronomical Circular
• GC — Galactic Center
• KIC — Kepler Input Catalog
• SAM — Super Active Matter
• CSV — Catalog of Suspected Variables
• FEB — Falling-Evaporating Body
• URPX — Uranian Ring Plane Crossing
• SSE — Star Selector Encoder
• MOST — Molonglo Observatory Synthesis Telescope
• MOST — Microvariability and Oscillations of STars Telescope
• RTPW — Rapid True Polar Wander
• TDB — Barycentric Dynamical Time
• SC — Star Cluster

• DSO — Deep Space Object
• APS — Astronomy & Planetary Science
• SF — Star Field
• PGPLOT — FORTRAN subroutine library for plotting graphics
• NCP — North Celestial Pole
• VRAM — Virtual Random Access Memory
• ARAS — Armenian Astronomical Society
• CRTS — Catalina Real-Time Transient Survey
• PFR — Portable Foot Restraint
• SAOC — SAO Catalog
• NBS — Next Bright Star
• CMF — Core Mass Function
• FAT — Filtered Array Technology
• NHICAT — Northern HIPASS CATalog
• PM — Primary Mirror
• SLSN-I — hydrogen-poor SLSNe
• TAC — Twin Astrograph Catalog
• ACK — acknowldgement message
• HSI — Host System Interface
• MJ — Mass of Jupiter
• AH — ampere hours
• LWS — Long-Wave Spectrograph
• CRBT — Cosmic Ray Background Test
• RSN — Radio SuperNova
• RV — Radius of Venus
• IAS — Indiana Astronomical Society
• LMT — Large Millimeter Telescope
• ODI — One Degree Imager
• APT — Astronomers Proposal Tools
• NMW — Northern Milky Way
• WBS — Work Breakdown Schedule
• HRD — Hertzsprung-Russell Diagram (astronomy)
• RSS — Rotating Service Structure
• SAS — Space Activity Suit
• SIRA — Solar Imaging Radio Array
• PASA — Pan-Arab Space Agency
• ♁ — Earth
• RCI — Rocket Consortium Interstellar
• CSF — Clustered Star Formation
• GGC — Giant Gravity Core
• COHSI — Cambridge OH-Suppression Instrument
• SPB — Science Planning Branch
• SSM — System Support Module
• LSG — Liaison Scientists Group
• OHD — Observational Hubble-parameter Data
• JSGA — Japan Spaceguard Association
• TMN — Tokyo Meteor Network
• MGC — Millennium Galaxy Catalogue
• SCCP — Sloan Computational Cosmology Project
• GTC — Gran Telescopio Canario

• PLE — Partial Lunar Eclipse
• HCD — High Consistency Discharge
• SLSN-R — radioactively powered SLSNe
• SB — Super Bright
• SS — Symbiotic Star
• RTO — Real-Time Operation
• MS — Millions of Stars
• SCE — SPACECRAFT COMMAND ENCODER
• VST — VLT Survey Telescope
• RCB — R Coronae Borealis
• LAS — Laboratoire Astronomie Spatiale
• NS — Nearby Star
• COD — Carbon Oxygen Dwarf
• COT — Check-Out on Type
• GTL — Geometric Time Leverage
• CASA — Common Astronomy Software Applications
• SDOR — S DORadus
• OTS — Oasa Tamura Sugitani
• MPS — Microlensing Planet Search
• WAVE — Wide Area Vertical Expansion
• CES — Central Electromagnetic Shower
• NIR — Near Infrared Reflection
• CME — Coronal Mass Ejections
• CP — Chemically Peculiar
• UXOR — UX ORionis objects
• NA — Negative Alignment
• ISV — Inter-Stellar Void
• BY — BY Draconis
• RSA — Revised Shapley-Ames
• GN — Galactic Nebula
• PRE — Photospheric Radius Expansion
• SZA — Sunyaev-Zeldovich Array
• ICV — Illumination Chromacity Variation
• SE — Solar Empire
• SH — Super Hot
• NSAS — Northern Skies Astronomical Society
• LAL — LALande
• ORI — Orbit Replaceable Instrument
• PDQ — PODPS Data Quality
• WUVC — Wezen Updated Variability Catalogue
• LPC — Long Period Comets
• IO — Interacting Object
• IPC — Inter Planetary Commission
• HR — Hertzsprung-Russell
• IG — Inter-Galactic
• SSS — Solar Single Scattering
• TIM — Telescope Image Modeling
• SAD — Supra-Arcade Downflow
• YS — Yellow Straggler
• WAC — Wide Angle Converter

• UBV — Ultraviolet Blue Visual photometry
• SLSN-II — hydrogen-rich SLSNe
• WCT — Window Correction Table
• OZ — Objective Zenith
• RMO — Rattlesnake Mountain Observatory
• WUPPE — Wisconsin Ultraviolet PhotoPolarimter Experiment
• RC — Ritchey-Chretien
• TLP — The Lunascan Project
• AC — Active Coronae
• MPP — multi-pinned phase
• OWL — Orbiting Wide-angle Light-collectors
• RU — Radius of Uranus
• UEF — Unidentified Energy Factor
• SFAC — Santa Fe Astronomy Club
• SS — Star Selector
• SFM — Super Full Moon
• TMC — Telescope Makers Convention
• VPC — viewport coordinates
• N — Nova
• EBL — Everything But Light
• SCP — Single Color Photometry
• RDI — Radiation Driven Implosion
• NGS — New Generation STAR
• IAU — International Astrophysical Union
• ECF — European Coordinating Facility
• VBT — Vainu Bappu Telescope
• MS — Main Sequence
• B — Barnard
• MOST — Microvariability Oscillations of STars
• JFC — Jupiter Family Comets
• GRB — Gamma Ray Bursters
• SS — Shooting Stars
• PET — Peak Ejection Time
• URO — Unidentified Red Object
• OBP — Onboard Processor
• WFC — Wide-Field Channel
• FOP — Friends Of Phobos
• SLSNE — superluminous supernova events
• SARA — Sub-KeV Atom Reflection Analyzer
• HMS — High Mass Star
• PLANET — Probing Lensing Anomalies NETwork
• MDB — multiplexed data bus
• ING — imagining new gastronomy
• SGP — South Galactic Pole
• GASP — GSSS Archive Support Project
• LGS — Local Group Survey
• R — Ray
• BLG — bulge
• BHH(S) — Black Hole(s)
• TO — Texas Instruments

• CALL — Collaborative Asteroid Lightcurve Link
• WAA — Washington Area Astronomers
• EFR — Emerging Flux Region
• SDH — science data header
• LDE — Long Decay Event
• COL — Collinder catalog
• CVA — Central Valley Astronomers
• GU — Galactic Unit
• MARS — MOUNTAIN ASTRONOMICAL RESEARCH SECTION
• GB — Guide Brightness
• CMA — Canis Majoris A
• TTOC — Tape Table of Contents
• WAT — Wide Angle Tail
• LWP — Long Wavelength Primary
• CA — Coronagraphic Apodizer
• SIM — Star in Motion
• FU — Forces Unknown
• OBD — Orbiting Brown Dwarf
• GT — Galaxy Tour
• MRK — Markarian (celestial object)
• MM — Missing Mass
• EGGR — Eggen & Greenstein
• EL — Enlarging Lens
• GRB — Gamma Ray Blast
• MI — Maximum Influence
• MG — Meteor Garden
• SSA — Small Science Aperture
• FIMS — Fors Instrumental Mask Simulator
• NSA — National Society of Astronomy
• VVS — Vereniging voor Sterrenkunde
• HRG — Hertling Ring Galaxy
• MKN — Markarian (celestial object)
• CST — Constant Strain Triangle
• VLR — Very Low Resonance
• CP — Cambridge Pulsar
• EF — Event Foreground
• NI — Non-Impact
• ABF — Astronomische Beeldverwerkings Faciliteiten
• DRO — Distant Retrograde Orbit
• FR — Fanaroff-Riley
• NSV — New Suspected Variable
• SF — Surface Features
• CFS — Chandrasekhar - Friedmann - Schutz instability
• BS — Bica and Schmitt
• USB — User Support Branch
• SD — Subdwarf
• OBS — Orbiting Brown-dwarf Star
• BE — Bright Elements
• F — Fraunhofer lines
• WLM — Wolf-Lundmark-Melotte

• RC — Red Clump
• RTB — Return to Brightest
• CNS — Central Navigation System
• VMC — Velocity Modulating Camera
• NPC — Nice Planetary Contrast
• AM — Anti-meridian
• GAM — Global Astronomy Month
• ZM — Zerkalnyi Mirror
• TT — Transit Traverse
• O — Occult
• RFO — Robert Ferguson Observatory
• IPN — InterPanetary Internet
• ZAC — Zenith Azimuth Coordinates
• URP — Uranian Ring Plane
• TO — Telescope Operator
• R — Rayleigh
• SCR — SuperCOSMOS-RECONS
• GR — Galactic Rotation
• RN — Reflection Nebulosity
• TIL — Transequatorial Interconnecting Loop
• WLM — Wolf-Lundmark-Melotte Galaxy
• SG — Star Graph
• MD — Matter Dominated
• MP — Massive Protostar
• GCI — geocentric intertial
• NA — Non-Anomalous
• MSC — Mission Support Calibration
• FP — Frozen Planet
• ALFA — A Laser For Astronomy
• JC — Jupiter Crosser
• MS — Morning Star
• PX — Planet Xtraterrestrial
• PC — Planetary Contrast
• USS — Unusual Star Shape
• JCT — Jordan Cosmological Theory
• MR — Measurement of Red
• BM — Blue Moon
• SSF — Space Station Fred
• SIP — Space Interested Person

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