This is a compilation of initialisms and acronyms commonly used in astronomy. Most are drawn from professional astronomy, and are used quite frequently in scientific publications. A few are frequently used by the general public or by amateur astronomers.

The acronyms listed below were placed into one or more of these categories:

• Astrophysics terminology – physics-related acronyms
• Catalog – collections of tabulated scientific data
• Communications network – any network that functions primarily to communicate with spacecraft rather than performing astronomy
• Data – astrophysical data not associated with any single catalog or observing program
• Celestial object – acronyms for natural objects in space and for adjectives applied to objects in space
• Instrumentation – telescope and other spacecraft equipment, particularly detectors such as imagers and spectrometers
• Meeting – meetings that are not named after organizations
• Observing program – astronomical programs, often surveys, performed by one or more individuals; may include the groups that perform surveys
• Organization – any large private organization, government organization, or company
• Person – individual people
• Publication – magazines, scientific journals, and similar astronomy-related publications
• Software – software excluding catalogued data (which is categorized as "catalog") and scientific images
• Spacecraft – any spacecraft except space telescopes
• Telescope – ground-based and space telescopes; organizations that operate telescopes (for example, the National Optical Astronomy Observatory (NOAO)) are listed under "organization"

0–9

• 1RXH – (catalog) 1st ROSAT X-ray HRI, a catalog of sources detected by ROSAT in pointed observations with its High Resolution Imager
• 1RXS – (catalog) 1ROSAT X-ray Survey, a catalog of sources detected by ROSAT in an all-sky survey
• 2dF – (instrumentation) Two-degree field, spectrograph on the Anglo-Australian Telescope
• 2dFGRS – (observing program) Two-degree-Field Galaxy Redshift Survey
• 2D-FRUTTI – (instrumentation) Two dimensional photon counting system
• 2MASP – (catalog) Two-micron all sky survey prototype, an early version of the 2MASS catalog
• 2MASS – (observing program/catalog) Two-Micron All Sky Survey, an all-sky survey in the near-infrared; also, the catalog of sources from the survey
• 2MASSI – (catalog) Two-Micron All Sky Survey, Incremental release, one of the versions of the 2MASS catalog
• 2MASSW – (catalog) Two-Micron All Sky Survey, Working database, one of the versions of the 2MASS catalog
• 2SLAQ – (observing program) 2dF-SDSS LRG and QSO survey
• 6dF – (instrumentation) six-degree field, spectrograph on the UKST

A

• A&A – (publication) Astronomy & Astrophysics, a European scientific journal
• AAA – (organization) Amateur Astronomers Association of New York
• AAO – (organization) Australian Astronomical Observatory (prior to 1 July 2010: Anglo-Australian Observatory)
• AAS – (organization) American Astronomical Society
• AAT – (telescope) Anglo-Australian Telescope
• AMBER – (telescope) a near-infrared interferometric instrument at VLTI
• AAVSO – (organization) American Association of Variable Star Observers
• ABBA – ADC Backend For Bolometer Array
• ABRIXAS – (observing program) A BRoadband Imaging X-ray All-sky Survey
• AC – (catalog) Catalogue Astrographique
• ACE – (spacecraft) Advanced Composition Explorer
• ACIS – (instrumentation) Advanced CCD Imaging Spectrometer, an instrument on the Chandra X-Ray Observatory
• ACM – (meeting) Asteroids, Comets, and Meteors
• ACP – (instrumentation) – Aerosol Collector and Pyrolyser, an instrument on the Huygens probe
• ACS – (instrumentation) Advanced Camera for Surveys, an instrument on the Hubble Space Telescope
• ACV – (celestial object) Alpha Canes Venatici, a class of rotating variable stars with strong magnetic fields named after Alpha Canum Venaticorum (Cor Caroli), the archetype for the class
• ACYG – (celestial object) Alpha CYGni, a class of rotating variable stars named after Alpha Cygni (Deneb), the archetype for the class
• ADAF – (astrophysics terminology) Advection Dominated Accretion Flow, a mechanism by which matter is slowly accreted onto a black hole
• ADC – (organization) Astronomical Data Center
• ADEC – (organization) Astrophysics Data Centers Executive Council, an organization that provides oversight for the Astrophysics Data and Information Services
• ADF – (organization) Astrophysics Data Facility
• ADS – (catalog) Aitken Double Stars
• ADS – (catalog) The Smithsonian Astrophysical Observatory/NASA astrophysics data system, an on-line database of almost all astronomical publications
• ADIS – (organization) Astrophysics Data and Information Services
• ADS – (organization) Astrophysics Data Service, an organization that maintains an online database of scientific articles
• AEGIS – (observing program) the All-wavelength Extended Groth strip International Survey
• AFGL – (organization) Air Force Geophysics Laboratory, a research laboratory now part of the United States Air Force Research Laboratory
• AFOEV – (organization) Association française des observateurs d'étoiles variables
• AG – (organization) Astronomische Gesellschaft
• AGAPE – (observing program) Andromeda Galaxy and Amplified Pixels Experiment, a search for microlenses in front of the Andromeda Galaxy
• AGB – (celestial object) asymptotic giant branch, a type of red giant star
• AGC – (catalog) Arecibo general catalog
• AGK – (catalog) Astronomische Gesellschaft Katalog
• AGN – (celestial object) Active galactic nucleus
• AGU – (organization) American Geophysical Union
• AIM – (spacecraft) Aeronomy of Ice in the Mesosphere, a spacecraft that will study the Noctilucent clouds
• AIPS – (software) Astronomical Image Processing System
• AJ – (publication) Astronomical Journal
• ALaMO – (organization) Automated Lunar and Meteor Observatory
• ALEXIS – (instrumentation) Array of Low Energy X-ray Imaging Sensors
• ALMA – (telescope) Atacama Large Millimeter/Sub-millimeter Array
• ALPO – (organization) Association of Lunar and Planetary Observers
• AMANDA – (telescope) Antarctic Muon And Neutrino Detector Array, a neutrino telescope
• AMASE – (software) Astrophysics Multi-spectral Archive Search Engine
• AMS – (organization) American Meteor Society
• AN – (publication) Astronomische Nachrichten, a German scientific journal
• ANS – (telescope) Astronomical Netherlands Satellite
• ANS – (organization) Astro News Service
• ANSI – (organization) American National Standards Institute
• AO – (instrumentation) Adaptive optics
• AOR – (instrumentation) Astronomical observation request
• ApJ – (publication) Astrophysical Journal
  • ApJL – (publication) Astrophysical Journal Letters
  • ApJS – (publication) Astrophysical Journal Supplement Series
• APM – (instrumentation/catalog), Automatic plate measuring machine, a machine for making measurements from photographic plates; also, a catalog based on measurements by the machine
• APO – (organization) Apache Point Observatory
• APOD – (data) Astronomy Picture of the Day
• APT – (telescope) Automated Patrol Telescope
• ARC – (organization) Ames Research Center
• ARC – (organization) Astrophysical Research Consortium
• ARCADE – a balloon satellite experiment to measure the heating of the Universe by the first stars and galaxies after the Big Bang
• ASA – (organization) Astronomical Society of the Atlantic
• ASAS – All Sky Automated Survey
• ASCL – Astrophysics Source Code Library, a citable online registry of research source codes
• ASE – (organization) Astronomical Society of Edinburgh
• ASI – (organization) Agenzia Spaziale Italiana
• ASIAA – (organization) Academia Sinica Institute of Astronomy and Astrophysics
• ASKAP – (telescope) Australian Square Kilometre Array Pathfinder, a next-generation radio telescope under construction in Western Australia. It differs from previous radio-telescopes in having many pixels at the focus of each antenna.
• ASP – (organization) Astronomical Society of the Pacific
• ASTRO – (spacecraft) Autonomous Space Transport Robotic Operations
• ATA – (telescope) Allen Telescope Array, a radio interferometer array developed by the SETI Institute to search for possible signals from extraterrestrial life
• ATCA – (telescope) Australia Telescope Compact Array
• ATLAS – (observing program) Australia Telescope Large Area Survey, a deep radio astronomical sky survey of two SWIRE fields covering a total of about 7 square degrees of sky.
• ATM – (person) hobbyist engaged in Amateur telescope making (may also refer to the book of the same title, Amateur Telescope Making)
• AU – (measurement) Astronomical Unit, the distance between the Earth and the Sun
• AUASS – (organization) Arab Union for Astronomy and Space Sciences
• AURA – (organization) Association of Universities for Research in Astronomy
• AWCA – (meeting) American Workshop on Cometary Astronomy, an older name for the International Workshop on Cometary Astronomy
• AXP – (celestial object) Anomalous X-Ray Pulsar
• AXAF – (telescope) Advanced X-ray Astrophysics Facility, an older name for the Chandra X-ray Observatory

B

• B – (catalog) Barnard catalog
• BAA – (organization) British Astronomical Association
• BAAS – (publication) Bulletin of the American Astronomical Society
• BAC – (catalog) Bordeaux Astrographic Catalog
• BAO – (astrophysics terminology) baryon acoustic oscillations
• BAO – (organization) Beijing Astronomical Observatory
• BASIS – (observing program) Burst and All Sky Imaging Survey
• BAT – (instrumentation) Burst Alert Telescope, an instrument on SWIFT
• BATC – (observing program) Beijing-Arizona-Taiwan-Connecticut, the name of a multi-wavelength sky survey
• BATSE – (instrument) Burst and Transient Source Experiment, an instrument on the Compton Gamma-Ray Observatory
• BATTeRS – (telescope) Bisei Asteroid Tracking Telescope for Rapid Survey
• BB – (astrophysics terminology) Black body
• BBXRT – (telescope) Broad Band X-Ray Telescope
• BCD – (celestial object) Blue compact dwarf
• BCD – (software) Basic calibrated data, data produced after basic processing
• BCEP – (celestial object) Beta CEPhei, a class of pulsating variable stars for which Beta Cephei is the archetypal object
  • also BCE
• BCG – (celestial object) Blue compact galaxy, another name for a blue compact dwarf, also bright central galaxy
• BCG – (celestial object) Brightest Cluster Galaxy, the brightest galaxy in a cluster of galaxies
• BCVS – (catalog) Bibliographic Catalogue of Variable Stars
• BD – (catalog) Bonner Durchmusterung
• BD – (celestial object) Brown dwarf
• BEN – (catalog) Jack Bennett catalog, a catalog of deep-sky objects for amateur astronomers
• BEL – (celestial object) broad emission line clouds in Active galactic nucleus^[1]
• BF – (astrophysics terminology) Broadening function
• BH – (celestial object) Black hole
• BHB – (celestial object) Blue horizontal branch, a type of luminous star
• BHC – (celestial object) Black hole candidate
• BHXRT – (celestial object) Black hole x-ray transient
  • also BHXT
• BICEP2 – (telescope) Background Imaging of Cosmic Extragalactic Polarization 2
• BIMA – (organization & telescope) Berkeley-Illinois-Maryland Association, and also B-M-I Array, microwave telescope it operated
• BIS – (organization) British Interplanetary Society
• BITP – (organization) – Bogolyubov Institute for Theoretical Physics, a Ukrainian research institute
• BLAGN – (celestial object) Broad-Line AGN, based on classification of spectral line widths
• BLLAC – (celestial object) BL LACertae, a class of active galaxies for which BL Lacertae is the archetypal object
  • also BLL
• BLAST – (telescope) – Balloon-borne Large Aperture Submillimeter Telescope
• BLR – (astrophysics term) the broad line region of the AGN
• BNSC – (organization) British National Space Centre, the older name for UKSA
• BOAO – (observatory) Bohyunsan Optical Astronomy Observatory, in Korea
• BOOMERanG – (telescope) Balloon Observations of Millimetric Extragalactic Radiation and Geophysics
• BPM – (catalog) Bruce proper motion
• BSG – (celestial object) Blue super giant
• BSS – (celestial object) Blue straggler star
  • also BS
• BSS – (observing program) Bigelow Sky Survey
• BY – (celestial object) BY Draconis, a class of rotating variable stars for which BY Draconis is the archetypal object

C

• C – First Cambridge Catalogue of Radio Sources, 2C (Second Cambridge Catalog), 3C (Third Cambridge Catalog)...
• CADC – (organization) Canadian Astronomy Data Centre
• CAHA – (organization) Centro Astronómico Hispano Alemán, a German-Spanish Astronomical Centre
• CANDELS – (survey) Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey or Cosmic Assembly and Dark Energy Legacy Survey
• CAPS – (instrumentation) Cassini Plasma Spectrometer, an instrument on the Cassini spacecraft
• CARA – (organization) California Association for Research in Astronomy
• CANGAROO – Collaboration between Australian and Nippon for a Gamma Ray Observatory
• CARA – (organization) Center for Astrophysical Research in Antarctica
• CASCA – (organization) Canadian Astronomical Society / Société canadienne d'astronomie (the name is officially bilingual)^[2]
• CARMA – an array
• CASS – (organization) Center for Advanced Space Studies
• CASS – (organization) Center for Astrophysics and Space Sciences, an interdisciplinary research unit at UC San Diego
• CBAT – (organization) Central Bureau for Astronomical Telegrams
• CBE – Collisionless Boltzmann Equation
• CBR – (celestial object) cosmic background radiation
• CC – (celestial object) candidate companion, a newly detected observed object that initially appears to orbit another celestial object
• CCD – (instrumentation) Charge-coupled device
• CCD – (astrophysics terminology) – Color–color diagram, a plot that compares the differences between magnitudes in different wave bands
• CCDM – (catalog) Catalog of Components of Double and Multiple Stars
• CCO – (catalog) Catalogue of Cometary Orbits
• CCO – (celestial object) central compact object, a compact star in the center of a planetary nebula
• CCS – (celestial object) cool carbon star
• CCSFS – Cape Canaveral Space Force Station, a United States Space Force launch base
• CD – (catalog) Cordoba Durchmusterung
• CDFS – Chandra Deep Field South
• CDIMP – (catalog) Catalogue of Discoveries and Identifications of Minor Planets
• CDM – (astrophysics terminology) Cold Dark Matter, any model for structure formation in the universe that characterize "cold" particles such as WIMPs as dark matter
• CDS – (organization) Centre de Données astronomiques de Strasbourg
• CELT – (telescope) – California Extremely Large Telescope, an older name for the Thirty Meter Telescope
• CEMP – (celestial object) Carbon-enhanced metal-poor, a type of carbon star
  • CEMP-no – (celestial object) Carbon-enhanced metal-poor star with no enhancement of elements produced by the r-process or s-process nucleosynthesis
  • CEMP-r – (celestial object) Carbon-enhanced metal-poor star with an enhancement of elements produced by r-process nucleosynthesis
  • CEMP-s – (celestial object) Carbon-enhanced metal-poor star with an enhancement of elements produced by s-process nucleosynthesis
  • CEMP-r/s – (celestial object) Carbon-enhanced metal-poor star with an enhancement of elements produced by both r-process and s-process nucleosynthesis
• CEP – (celestial object) CEPheid, a type of pulsating variable star
• CEPS – (organization) Center for Earth and Planetary Studies
• CfA – (organization) Center for Astrophysics
• CFHT – (telescope) Canada–France–Hawaii Telescope
• CFRS – (observing program), Canada–France Redshift Survey
• CG – (astrophysics terminology) Center of gravity
• CG – (celestial object) Cometary Globule, a Bok globule that show signs of a tail-like extension
• CG – (celestial object) Compact galaxy
• CGCS – (celestial object) Cool galactic carbon star
• CGRO – (telescope) Compton Gamma Ray Observatory
• CGSS – (catalog) Catalogue of Galactic S Stars
• CHARA – (organization) Center for High Angular Resolution Astronomy
• CHeB – (celestial object) Core Helium Burning^[3]
• CHIPSat – Cosmic Hot Interstellar Plasma Spectrometer satellite
• CIAO – (software) Chandra Interactive Analysis of Observations, software for processing Chandra X-ray Observatory data
• CIAO – (instrumentation) Coronagraphic Imager with Adaptive Optics, an instrument for the Subaru Telescope
• CIBR – (celestial object) Cosmic infrared background radiation
  • also CIB
• CIDA – (instrumentation) Cometary Interplanetary Dust Analyzer, an instrument on the Stardust spacecraft
• CINDI – Coupled Ion-Neutral Dynamics Investigation
• CINEOS – (observing program) Campo Imperatore Near-Earth Object Survey
• CIO – (catalog) Catalog of Infrared Observations
• CISCO – (instrumentation) Cooled Infrared Spectrograph and Camera for OHS, an instrument for the Subaru Telescope
• CM – (astrophysics terminology) center of mass
• CMB – (celestial object) cosmic microwave background radiation
  • also CMBR, CBR, MBR
• CMC – (catalog) Carlsberg Meridian Catalogue
• CMD – (astrophysics terminology) color–magnitude diagram, the Hertzsprung–Russell diagram or similar diagrams
  • also CM
• CME – coronal mass ejection
• CNB – (celestial object) cosmic neutrino background
• CNES – (organization) Centre Nationale d'Etudes Spatiales, the French Space Agency
• CNO – (astrophysics terminology) Carbon-Nitrogen-Oxygen, a sequence of nuclear fusion processes
• CNR – (organization) Consiglio Nazionale delle Ricerche
• CNSR – (spacecraft) Comet nucleus sample return
• COBE – (telescope) Cosmic Background Explorer, a space telescope used to study the cosmic microwave background radiation
• COHSI – (instrumentation) Cambridge OH-Suppression Instrument
• Col – (catalog) Collinder catalog
• COMICS – (instrumentation) COoled Mid-Infrared Camera and Spectrometer, an instrument for the Subaru Telescope
• CGRO – (telescope) COMPton TELescope, another name for the Compton Gamma Ray Observatory
• COROT – (telescope) COnvection ROtation and planetary Transits, a space telescope for detecting extrasolar planets
• COSMOS – (observing program) Cosmic Evolution Survey
• COSPAR – (organization) COmmittee on SPAce Research
• COSTAR – (instrumentation) Corrective Optics Space Telescope Axial Replacement, corrective optics for the Hubble Space Telescope
• CP – (astrophysics terminology) Chemically peculiar, stars with peculiar chemical compositions
• CPD – (catalog) Cape Photographic Durchmusterung
• CRAF – (spacecraft) Comet Rendezvous Asteroid Flyby
• CRRES – Combined Release and Radiation Effects Satellite
• CSA – (organization) Canadian Space Agency
• CSBN – (organization) Committee for Small-Body Nomenclature
• CSE – (celestial object) circumstellar envelope, a roughly spherical planetary nebula formed from dense stellar wind if not present before the formation of a star.
• CSI – (catalog) Catalog of Stellar Identification, a compilation of the catalogs, BD, CD, and CPD
• CSO – (telescope) Caltech Submillimeter Observatory
• CSP – (astrophysics terminology) composite stellar population
• CSPN – (celestial object) central star of planetary nebula
  • also CSPNe (plural form of CSPN)
• CSS – (observing program) Catalina Sky Survey
• CST – (astrophysics terminology) ConStanT, non-variable stars
• CSV – (catalog) Catalog of Suspected Variables
• CTIO – (telescope/organization) Cerro Tololo Interamerican Observatory
• CTTS – (celestial object) Classical T-Tauri Star
• CV – (celestial object) cataclysmic variable, a type of variable binary star system that contains a white dwarf and a companion star that changes
• CW – (celestial object) Cepheid W Virginis, a class of Cepheids named after W Virginis, the archetype for the class
  • CWA – (celestial object) Cepheid W Virginis A, a subclass of CW stars that vary in brightness on timescales of less than 8 days
  • CWB – (celestial object) Cepheid W Virginis B, a subclass of CW stars that vary in brightness on timescales greater than 8 days
• CXBR – (celestial object) Cosmic x-ray background radiation
• CXO – (catalog) Chandra X-ray Observation, a catalog based from the Chandra space telescope

D

• DAO – (organization) Dominion Astrophysical Observatory
• DCEP – (celestial object) Delta CEPhei, a class of Cepheids named after Delta Cephei, the archetype for the class
• DDEB – (celestial object) double-lined eclipsing binary
• DENIS – (observing program/catalog) DEep Near Infrared Survey
• DENIS-P – (catalog) DEep Near Infrared Survey, Provisory designation .
• DES – (observing program) Dark Energy Survey
• DESI - (observing program) Dark Energy Spectroscopic Instrument
• DEC – Declination
• DES – (observing program) Deep Ecliptic Survey
• DIB – (celestial object) diffuse interstellar band, an absorption feature in stellar spectra with an interstellar origin
• DIRBE – (instrumentation) Diffuse InfraRed Background Experiment, a multiwavelength infrared detector used to map dust emission
• DISR – (instrumentation) – Descent Imager/Spectral Radiometer, an instrument on the Huygens probe
• DMR – (instrumentation) Differential Microwave Radiometer, a microwave instrument that would map variations (or anisotropies) in the CMB
• DM – dark matter, the unidentified non-baryonic matter
• DN – (celestial object) Dwarf nova
• DNS – (celestial object) double neutron star, another name for a binary neutron star system. .
• DOG – (celestial object) dust-obscured galaxy, a galaxy with an unusually high ratio of infrared-to-optical emission, implying strong dust absorption and re-emission.^[4]
• DPOSS – (data) Digitized Palomar Observatory Sky Survey
• DRAGN (celestial object) Double Radio Source Associated with a Galactic Nucleus
• DS – (celestial object) dwarf star
• DSCT – Delta SCuTi, a class of pulsating variable stars named after Delta Scuti, the archetype for the class
• DSN – (communications network) Deep Space Network, a network of radio antennas used for communicating to spacecraft
• DSS – (data) Digitized Sky Survey
• DSFG - (celestial object) Dusty Star Forming Galaxy
• DWE – (instrumentation) – Doppler Wind Experiment, an instrument on the Huygens probe

E

• E – (celestial object) Eclipsing, a binary star system with variable brightness in which the stars eclipse each other
  • EA – (celestial object) Eclipsing Algol, a class of eclipsing binary stars named after Algol, the archetype for the class
  • EB – (celestial object) Eclipsing Beta Lyrae, a class of eclipsing binary stars named after Beta Lyrae, the archetype for the class
  • EW – (celestial object) Eclipsing W Ursa Majoris, a class of eclipsing binary stars named after W Ursa Majoris, the archetype for the class
• EAAE – (organization) European Association for Astronomy Education
• EACOA – (organization) – East Asian Core Observatories Association
• EAO – (organization) – East Asian Observatory, operates the JCMT
• E-ELT – (telescope) – European Extremely Large Telescope
• EAPSNET – (organization) – East-Asian Planet Search Network
• EC – (celestial object) Embedded Cluster, a star cluster that is partially or fully embedded in interstellar gas or dust
• ECA – (celestial object) Earth-crossing asteroid
• EGG – (celestial object) evaporating gaseous globule
• EGGR – (catalog) Eggen & Greenstein, a catalog of mostly white dwarfs
• EGP – (celestial object) extrasolar giant planet
• EGRET – (telescope) Energetic Gamma Ray Experiment Telescope, another name for the Compton Gamma Ray Observatory
• EGS – Extended Groth Strip, a deep field
• EHB – (celestial object) extreme horizontal branch, a type of hot, evolved star
• EJASA – (publication) Electronic Journal of the Astronomical Society of the Atlantic
• EKBO – (celestial object) Edgeworth–Kuiper belt object, an alternative name for Kuiper belt objects
• ELAIS – ESO large-area infrared survey – a survey
• ELAIS – (observing program) European Large Area ISO Survey, a survey of high redshift galaxies performed with the Infrared Space Observatory (ISO)
• ELF – extremely luminous far-infrared galaxy, a synonym for Ultra-Luminous infrared galaxy
• ELT – (telescope) Extremely Large Telescope
• EMP – (catalog) Ephemerides of Minor Planets
• EMP – (celestial object) extremely metal-poor, a star with few elements other than hydrogen and helium
• EMU – Evolutionary Map of the Universe
• ENACS – (observing program) ESO Nearby Abell Cluster Survey, a survey of galaxy clusters
• EPIC – (celestial object) stars and exoplanets, associated with the K2 "Second Light" plan of the Kepler space telescope
• ERO – (celestial object) extremely red object, a name applied to galaxies with red spectra
• ESA – (organization) European Space Agency
• ESO – (organization) European Southern Observatory
• ESTEC – (organization) European Space research and TEchnology Centre
• ESTRACK – (communications network) European Space TRACKing, a network of radio antennas used for communicating to spacecraft
• ETC – exposure time calculator
• EUV – (astrophysics terminology) Extreme ultraviolet
• EUVE – (telescope) Extreme UltraViolet Explorer, an ultraviolet space telescope
• EVN – (organization) European VLBI Network

F

• FAME – (telescope) Full-sky Astrometric Mapping Explorer
• FASTT – (telescope) Flagstaff Astrometric Scanning Transit Telescope
• FCC – (catalog) Fornax Cluster Catalog, a catalog of galaxies in the Fornax Cluster
• FEB – (celestial object) falling-evaporating body, a solid planetary object that is being evaporated by the stellar wind
• FGS – (instrumentation) fine guidance sensors, an instrument on the Hubble Space Telescope
• FHST – (instrumentation) Fixed Head Star Trackers, an instrument on the Hubble Space Telescope
• FIR – (astrophysics terminology) far infrared
• FIRST – (observing program) Faint Images of the Radio Sky at Twenty-Centimeters, a radio survey of the sky with the Very Large Array
• FIRST – (telescope) Far InfraRed and Submillimeter Space Telescope, an older name for the Herschel Space Observatory
• FIRAS – (Instrumentation) Far-InfraRed Absolute Spectrophotometer
• FIRE – (simulation project) Feedback in Realistic Environments, a project to simulate galaxy formation with detailed feedback processes included
• FITS – (software) Flexible Image Transport System, the format commonly used for scientific astronomy images
• FLAMES – (instrumentation) Fibre Large Array Multi Element Spectrograph, instrument on the VLT
• FLOAT – (telescope) Fibre-Linked Optical Array Telescope
• FLWO – (telescope) Fred L. Whipple Observatory
• FMO – (celestial object) fast moving object, an asteroid so close to the Earth that it appears to be moving very fast
• FOC – (instrumentation) Faint Object Camera, a camera formerly on the Hubble Space Telescope
• FOCAS – (instrumentation) Faint Object Camera And Spectrograph, an instrument for the Subaru Telescope
• FoM – (terminology) Figure of Merit. Used to indicate the performance of a method or device.
• FORTE – Fast On-orbit Rapid Recording of Transient Events
• FOS – (instrumentation) Faint Object Spectrograph, a spectrometer formerly on the Hubble Space Telescope
• FOV – (instrumentation) field of view
• FRB – (celestial object) fast radio burst
• FRED – (astrophysics terminology) fast rise exponential decay, the variations in the luminosity of gamma ray bursts over time
• FSC – (catalog) Faint Source Catalogue, one of the catalogs produced using Infrared Astronomical Satellite data
• FSRQ – (celestial object) Flat Spectrum Radio Quasars
• FTL – (astrophysics terminology) faster than light
• FUOR – (celestial object) FU Orionis objects, a class of variable pre–main sequence stars named after FU Orionis, the archetype for the class
  • also FU
• FUSE – (telescope) Far Ultraviolet Spectroscopic Explorer, an ultraviolet space telescope
• FUVITA – (instrumentation) Far UltraViolet Imaging Telescope Array, an ultraviolet imager for the Spectrum-Roentgen-Gamma mission
• FWHM – (instrumentation) full width at half maximum, a telescope resolution
• FWZI – (instrumentation) full width at zero intensity, a telescopes resolution

G

• G – (catalog) Giclas, a catalog of nearby stars
• GAIA – (telescope) Global Astrometric Interferometer for Astrophysics, a space telescope that is used to make high-precision measurements of stars
• GALEX – (telescope) Galaxy Evolution Explorer, an ultraviolet space telescope
  • GALEXASC – GALaxy Evolution eXplorer all-sky catalog
• GASP – (software) Guide star Astrometric Support Package
• GAT – (catalog) AO (Gatewood+), catalog of G. Gatewood's observations
• GBM – (instrumentation) Gamma-Ray Burst Monitor, a set of gamma ray detectors on the Fermi Gamma-Ray Space Telescope
• GBT – (telescope) Green Bank Telescope
• GC – (catalog) General Catalog, a catalog of clusters, nebulae, and galaxies created by John Herschel and now superseded by the New General Catalogue, also globular cluster
• GCAS – (celestial object) Gamma CASsiopeiae, a class of eruptive variable stars named after Gamma Cassiopeiae, the archetype for the class
• GCMS – (instrumentation) – Gas Chromatograph and Mass Spectrometer, an instrument on the Huygens probe
  • also GC/MS
• GCN – (organization) GRB Coordinates Network
• GCR – (astrophysics terminology) galactic cosmic rays
• GCVS – (catalog) the General Catalog of Variable Stars
• GD – (catalog) Giclas Dwarf, a catalog of white dwarf
• GDS – (celestial object) Great Dark Spot, a transient feature in the clouds of Neptune
• GEM – (observing program) Galactic Emission Mapping
• GEM – (observing program) Galileo Europa Mission, the science observation program of Europa performed by the Galileo spacecraft
• GEM – (observing program) Giotto Extended Mission, the extended operations of the Giotto spacecraft
• GEMS – (organization) Group Evolution Multi-wavelength Study
• GEMS – (survey) Galaxy Evolution from Morphology and Spectral energy distributions
• GEMSS – (organization) Global Exoplanet M-dwarf Search-Survey, a search for exoplanets around m-dwarf stars
• GEODDS – (telescope) Ground-based Electro-Optical Deep Space Surveillance, a network of telescopes used in a United States Air Force program for observing space junk
• GEOS – (organization) Groupe Européen Observations Stellaires, an amateur and professional association for study of variable stars.
• GERLUMPH – (instrumentation) GPU-Enabled, High Resolution MicroLensing Parameter survey, where GPU is an acronym for Graphics Processing Unit.
• GH – (catalog) Giclas Hyades, a catalog of stars in the Hyades cluster
• GHRS – (instrumentation) Goddard High Resolution Spectrograph, a spectrograph on the Hubble Space Telescope
  • also HRS
• GIA – (organization) Gruppo Italiano Astrometristi
• GIMI – (instrumentation) Global Imaging Monitor of the Ionosphere, an ultraviolet imager on the Advanced Research and Global Observation Satellite
• GJ – (catalog) Gliese & Jahreiß/Jahreiss nearby star catalog
• GL – (catalog) Gliese nearby star catalog
• GLAST – (telescope) Gamma-ray Large Area Space Telescope
• GLIMPSE – (observing program) Galactic Legacy Infrared Mid-Plane Survey Extraordinaire
• GMC – (celestial object) Giant molecular cloud
• GMF – (celestial object) Galactic magnetic field
• GMRT – (telescope) – Giant Metrewave Radio Telescope - Pune, India
• GMT – (telescope) – Giant Magellan Telescope, a telescope being built by a US-Australian collaboration
• GONG – (organization) Global Oscillation Network Group, an organization that monitors oscillations in the Sun
• GOLD – Global-scale Observations of the Limb and Disk
• GOODS – (survey) Great Observatories Origins Deep Survey a survey of various redshifts to study galactic formation and evolution
• GP – (astrophysics terminology) giant pulses, a type of observed pulse emission from pulsars
• GPS – (astrophysics teminology) GHz-peaked spectrum, the radio or microwave spectra of some galaxies
• GR – (astrophysics terminology) general relativity
• GR – (catalog) Giclas Red dwarf, a catalog of red dwarfs
• GRB – (celestial object) gamma ray burst
• GRO – (telescope) Gamma Ray Observatory, another name for the Compton Gamma Ray Observatory
• GROSCE – (telescope) Gamma Ray Burst Optical Counterparts Search Experiment, an automated telescope used to detect the optical counterparts to gamma ray bursts
• GRS – (instrumentation) Gamma Ray Spectrometer, an instrument on the Mars Observer
• GRS – (celestial object) Great Red Spot, a feature in the clouds of Jupiter
• GSC – (catalog) Guide Star Catalog, a catalog of stars used for pointing the Hubble Space Telescope
• GSC2 – (catalog) Guide Star Catalog version 2, a catalog of stars used for pointing the Hubble Space Telescope
  • also GSC II
• GSFC – (organization) Goddard Space Flight Center, a NASA institution
• GSPC – (catalog) Guide Star Photometric Catalog, a catalog of stars with precisely measured fluxes used to calibrate the Guide Star Catalog
• GTC – (telescope) Gran Telescopio Canarias, the 10.4 m reflecting telescope on the island of La Palma, Canary Islands, Spain
• GW – (celestial object) – Gravitational Wave.

H

• HAeBe – (celestial object) Herbig AeBe star, a type of pre-main-sequence star with strong spectral emission lines
  • HAe – (celestial object) Herbig Ae star
  • HBe – (celestial object) Herbig Be star
• HALCA – (telescope) Highly Advanced Laboratory for Communications and Astronomy, a satellite that is part of the VLBI Space Observatory Program, a Japanese radio astronomy project
• HAO – (organization) high-altitude observatory
• HARPS – (instrumentation) High Accuracy Radial velocity Planet Searcher, a high-precision spectrograph installed on the ESO 3.6 m Telescope
• HASI – (instrumentation) Huygens Atmosphere Structure Instrument, an instrument on the Huygens probe
• HB – (celestial object) horizontal branch, a type of evolved red giant star in which helium is burned in the core and hydrogen is burned in a shell around the core
• HBRP – (celestial object) High-magnetic field radio pulsar
• HBV – (catalog) Hamburg–Bergedorf Variables, a catalog of variable stars
• HBMM – (astrophysics terminology) Hydrogen-burning minimum mass
• HCG – Hickson Compact Group
• HCO – (organization) Harvard College Observatory
• HCS – (celestial object) heliospheric current sheet, the boundary where the polarity of the Sun's magnetic field changes direction
• HD – (catalog) Henry Draper, a catalog of stars
• HDE – (catalog) Henry Draper Extension, a catalog of stars
• HDF – (data/celestial object) Hubble Deep Field, an area of the sky with little foreground obscuration that was observed deeply with the Hubble Space Telescope; also the name for the data product itself
  • HDFS – Hubble Deep Field South
• HDM – (astrophysics terminology) hot dark matter, any model for structure formation in the universe that characterizes neutrinos as dark matter
• HDS – (instrumentation) High Dispersion Spectrograph, a spectrograph on the Subaru Telescope
• HE – (catalog) Hamburg/ESO Survey
• HEAO – (telescope) High Energy Astronomical Observatory, a series of X-ray and gamma ray space telescopes
• HEASARC – (organization) High Energy Astrophysics Science Archive Research Center, a NASA organization that deals with X-ray and gamma ray telescope data
• HerMES - (observing program) Herschel Multitiered Extragalactic Survey, a legacy survey of star forming galaxies using the SPIRE and PACS instrument of Herschel
• HESS – (telescope) High Energy Stereoscopic System, a telescope for detecting cosmic rays
• HET – Hobby–Eberly Telescope
• HETE – (telescope) High Energy Transient Explorer, a space telescope that performs multi-wavelength observations of gamma-ray bursts
• HF – (astrophysics terminology) High frequency
• HGA – (instrumentation) High gain antenna
• HH – (celestial object) Herbig–Haro object, objects formed when the ejecta from new stars collides with the interstellar medium
  • also HHO
• HIC – (catalog) HIPPARCOS Input Catalog, a catalog of data for the first target stars selected for observation by the Hipparcos
• HICAT – (catalog) HIPASS catalog, a catalog of HI sources, see also NHICAT
• HID – (astrophysics terminology) – hardness–intensity diagram, a type of color–magnitude diagram used in X-ray and gamma-ray astronomy
• HIP – (catalog) HIPPARCOS, the catalog of data produced by Hipparcos
• HIPASS – (Observing program) HI Parkes All-Sky Survey, survey of HI sources
• HIPPARCOS – (telescope) HIgh Precision PARallax COllecting Satellite, a space telescope specifically designed to measure distances to stars using parallax
• HISA – (astrophysical terminology) HI self-absorption region
• HIRAX – (telescope) Hydrogen Intensity and Real-time Analysis eXperiment, an interferometric array of 1024 6-meter (20ft) diameter radio telescopes to be built in South Africa
• HK – (catalog) Survey for metal-poor stars based on the strength of CaII H and K absorption lines
• HLIRG – (celestial object) Hyperluminous infrared galaxy, a galaxy that is brighter than 10¹³ solar luminosities in the infrared
• HMC – (instrumentation) Halley Multicolor Camera, an instrument on the Giotto spacecraft
• HMGB – (celestial object) High-mass gamma-ray binary, a Gamma ray-luminous binary system consisting of a compact star and a massive star
• HMPO – (celestial object) High-mass proto-stellar object
• HMXB – (celestial object) High-mass x-ray binary, an X-ray-luminous binary system consisting of a compact star and a massive star
• HOPS – The H₂O southern Galactic Plane Survey^[5]
• HPMS – (celestial object) high proper motion star, a star with high proper motion
• HR – (catalog) Hoffleit Bright Star
• HR – (astrophysics terminology) Hertzsprung–Russell, a diagram that compares stars' colors to their luminosities
• HRC-I – (instrumentation) High Resolution Camera, an instrument on the Chandra X-ray Observatory
• HRD – (instrumentation) High Rate Detector, an instrument on the Cassini spacecraft
• HRMS – (observing program) High Resolution Microwave Survey, a survey for microwave signals from extraterrestrial intelligence
• HRI – (instrumentation) High Resolution Imager, an instrument on the ROSAT telescope
• HSP – (instrumentation) High Speed Photometer, an instrument formerly on the Hubble Space Telescope
• HST – (telescope) Hubble Space Telescope
• HTRA – (astrophysics terminology) High time-resolution astrophysics, the observations of phenomena that vary on timescales of one second or less
• HUT – (telescope) Hopkins Ultraviolet Telescope, an ultraviolet telescope that operated from the cargo bay of the Space Shuttle
• HVC – (celestial object) high-velocity cloud, an interstellar cloud with a velocity that is too high to be explained by galactic rotation
• HXD – (instrumentation) Hard X-ray Detector, an instrument on the Suzaku space telescope
• HVS – (celestial object) hypervelocity star or high velocity star

I

• IAC – (organization) Instituto de Astrofisica de Canarias
• IAPPP – (organization) International Amateur/Professional Photoelectric Photometry
• IAS – (organization) Istituto di Astrofisica Spaziale
• IASY – (observing program) International Active Sun Year, the name given to a series of coordinated Sun-related observational programs performed in 1969 and 1971
• IAU – (organization) International Astronomical Union
• IAUC – (publication) IAU Circular
• IAYC – (meeting) International Astronomical Youth Camp
• IBAS – (instrumentation) – INTEGRAL Burst Alert System, an instrument on the INTEGRAL satellite
• IBIS – (instrumentation) – Imager on Board the INTEGRAL Satellite, an instrument on the INTEGRAL satellite
• IBVS – (publication) Information Bulletin on Variable Stars
• IC – (catalog) Index Catalog
• IC – (celestial object) Intracluster, either the regions between stars in star clusters or the region between galaxies in galaxy clusters
• ICE – (spacecraft) International Comet Explorer
• ICM – (celestial object) intracluster medium, is the superheated gas present at the center of a galaxy cluster
• ICQ – (publication) International Comet Quarterly
• ICRF – (astrophysics terminology) International Celestial Reference Frame, a coordinate system based on radio sources used to define the locations of objects in the sky
• ICRS – (astrophysics terminology) International Celestial Reference System, a coordinate system based on Hipparcos observations used to define the locations of objects in the sky
• IDA – (organization) International Dark-Sky Association, an organization that seeks to control light pollution
• IDP – (celestial object) Interplanetary Dust Particle, dust particles around planets or planetary bodies
• IDS – (catalog) Index Catalog of Double Stars
• IEO – (astrophysics terminology) inner-Earth object, the orbits of asteroids
• IERS – (organization) International Earth Rotation geophysical Service or International Earth rotation and Reference systems Service, an organization that monitors the Earth's orientation with respect to the radio sources used to define the ICRF
• IfA: either Institute for Astronomy (Hawaii) or Institute for Astronomy, School of Physics and Astronomy, University of Edinburgh, Scotland
• IFN – (celestial object) integrated flux nebulae, dust and gas outside the plane of the Milky Way, which are thus illuminated by the entire galaxy as opposed to a nearby star or stars
• IGM – (celestial object) intergalactic medium
• IGR – (catalog) Integral Gamma-Ray source, a catalog based on observations by the INTEGRAL telescope
• IGY – (observing program) International Geophysical Year, the name given to a series of coordinated geophysical and astronomical observation programs performed in 1957 and 1958
• IHW – (organization) International Halley Watch, an organization created to coordinate observations of Halley's Comet in 1986
• ILOM – (spacecraft) In-situ Lunar Orientation Measurement, a mission to measure variations in the orientation of the Moon from the Moon's surface
• IMAGE – Imager for Magnetopause-to-Aurora Global Exploration
• IMBH – (celestial object) intermediate mass black hole
• IMF – (astrophysics terminology) initial mass function, the relative numbers of stars of different masses that form during star formation
• IMO – (organization) International Meteor Organization
• IMPACT – (meeting) International Monitoring Programs for Asteroid and Comet Threat
• IMPS – (observing program) IRAS Minor Planet Survey
• INAG – (organization) Institut National d'Astronomie et de Geophysique
• ING – (organization) Isaac Newton Group of Telescopes
• INS – (celestial object) Isolated Neutron Star
• INT – (telescope) Isaac Newton Telescope
• INTEGRAL – (telescope) INTErnational Gamma-Ray Astrophysics Laboratory, a gamma-ray space telescope
• IoA – (organization) Institute of Astronomy, an astronomy research department at Cambridge University
• IOTA – (telescope) Infrared Optical Telescope Array
• IOTA – (organization) International Occultation Timing Association, an organization for monitoring occultations
• IPAC – (organization) Infrared Processing & Analysis Center
• IPMO – (celestial object) Isolated Planetary Mass Objects, another name for isolated planemos or sub-brown dwarfs
• IQSY – (observing program) International Quiet Sun Year, the name given to a series of coordinated Sun-related observational programs performed in 1964 and 1965
• IR – (astrophysics terminology) InfraRed
• IRAC – (instrumentation) Infrared Array Camera, a mid-infrared imager on the Spitzer Space Telescope
• IRAF – (software) Image Reduction and Analysis Facility, a general-purpose professional data-processing package
• IRAIT – (telescope) – International Robotic Antarctic Infrared Telescope
• IRAM – (organization) Institut de Radio Astronomie Millimetrique
• IRAS – (telescope/catalog) InfraRed Astronomical Satellite, an infrared space telescope; also the catalog produced using the telescope's data
• IRCS – (instrumentation) InfraRed Camera and Spectrograph, an instrument on the Subaru Telescope
• IRDC – (celestial object) Infrared Dark Cloud
• IRS – (instrumentation) InfraRed Spectrograph, an infrared spectrometer on the Spitzer Space Telescope
• IRSA – (organization) Infrared Science Archive
• IRTF – (telescope) InfraRed Telescope Facility
• IRX – (astrophysical terminology) InfraRed Excess
• ISAS – (organization) Institute of Space and Astronautical Science
• ISAS – (organization) Institute of Space and Atmospheric Studies, a research unit at the University of Saskatchewan
• ISCO – (astrophysical terminology) Innermost Stable Circular Orbit
• ISEE – (spacecraft) International Sun-Earth Explorer, a series of spacecraft designed to study the effects of the Sun on the Earth's space environment and magnetosphere
• ISGRI – (instrumentation) – INTEGRAL Soft Gamma-Ray Imager, an instrument on the INTEGRAL satellite
• ISM – (celestial object) InterStellar Medium
• ISN – (organization) International Supernovae Network
• ISO – (telescope) Infrared Space Observatory
• ISON – International Scientific Optical Network
• ISPM – (spacecraft) International Solar Polar Mission, another name for the Ulysses spacecraft
• ISRO – (organization) Indian Space Research Organisation
• ISSA – (data) Infrared Sky Survey Atlas, an atlas compiled from Infrared Astronomical Satellite data
• ISTeC – (organization) International Small Telescope Cooperative
• ISY – (observing program/meeting) International Space Year, the name given to a celebration of space exploration as well as a series of coordinated astronomical observations and a series of meetings to plan future astronomy research efforts
• ITA – (organization) Institute of Theoretical Astronomy, one of three organizations that was combined to form the Institute of Astronomy
• IUCAA – (organization) Inter-University Centre for Astronomy and Astrophysics - Pune, India
• IUE – (telescope) International Ultraviolet Explorer, an ultraviolet space telescope
• IUEDAC – (organization) IUE satellite Data Analysis Center
• IWCA – (meeting) International Workshop on Cometary Astronomy

J

• Janskys – (publication) Green Bank Observatory
• JAC – (publication) Japan Astronomical Circular
• JAC – (organization) Joint Astronomy Centre, the organization that operates the United Kingdom Infrared Telescope and the James Clerk Maxwell Telescope
• JAPOA – (organization) Japan Amateur Photoelectric Observers Association
• JAXA – (organization) Japan Aerospace eXploration Agency
• JBO – Jodrell Bank Observatory, a radio observatory in England.
• JCMT – (telescope) James Clerk Maxwell Telescope
• JD – (astrophysics terminology) Julian Date, an alternative time commonly used in astronomy
• JET-X – (telescope) Joint European Telescope for X-ray astronomy
• JGR – (publication) Journal of Geophysical Research
• JILA – (organization) formerly Joint Institute for Laboratory Astrophysics
• JIVE – Joint Institute for VLBI in Europe
• JKT – (telescope) Jacobus Kapteyn Telescope
• JPL – (organization) Jet Propulsion Laboratory, a research center associated with NASA
• JSGA – (telescope/organization) Japan SpaceGuard Association, a Japanese telescope used to track near-Earth asteroids and space junk
• JWST – (telescope) James Webb Space Telescope, an infrared space telescope

K

• KAIT – (telescope) Katzman Automatic Imaging Telescope
• KAO – (telescope) Kuiper Airborne Observatory
• KBO – (celestial object) Kuiper belt object
• KCAO – (organization) Kumamoto Civil Astronomical Observatory
• KIC – (catalog) Kepler Input Catalog, a catalog of stars with potential extrasolar planets to be observed by the Kepler Mission
• KPNO – (organization) Kitt Peak National Observatory
• KS – (astrophysics terminology) Kennicutt-Schmidt relation

L

• L – (astrophysics terminology) Lagrange, Lagrange points
• L – (catalog) Luyten, a catalog of proper motion measurements of stars
• LAD-C – (instrumentation) Large Area Debris Collector, a canceled program that was to collect and catalog low orbital dust on the International Space Station
• LAEFF – (organization) Laboratorio de Astrofisica Espacial y Fisica Fundamental, a Spanish astronomy research organization
• LAL – (catalog) LALande, a historical catalog of stars
• LAMOST – (telescope) Large sky Area Multi-Object fiber Spectroscopic Telescope
• LANL – (organization) Los Alamos National Laboratory
• LASCO – (instrumentation) Large Angle and Spectrometric COronagraph, an instrument on the Solar and Heliospheric Observatory
• Laser – (instrumentation) light amplification by stimulated emission of radiation
• LAT – (instrumentation) Large Area Telescope, on the Fermi Gamma-ray Space Telescope
• LBN – (catalog) Lynds Bright Nebula, a catalog of bright nebulae
• LBG - (celestial object) Lyman Break Galaxy, a galaxy identified using the Lyman-break selection technique
• LBNL – (organization) Lawrence Berkeley National Laboratory
• LBT – (telescope) Large Binocular Telescope
• LBV – (celestial object) luminous blue variable, a type of very bright variable star
• LCDM – (astrophysics terminology) Lambda cold dark matter, any model for structure formation in the universe that includes dark energy
  • also ΛCDM
• LCO — (observatory) Las Campanas Observatory, Atacama Region in Chile
• LCOGT – network of autonomous robotic telescopes (2m, 1m and 40 cm) at 7 sites in both hemispheres
• LCROSS – (spacecraft) Lunar CRater Observation and Sensing Satellite
• LCRS – (observing program) Las Campanas Redshift Survey
• LDN – (catalog) Lynds Dark Nebula, a catalog of dark nebulae
Zdroj:https://en.wikipedia.org?pojem=X-Ray_Flash
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