951 abbreviations
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
CGRO(telescope) COMPton TELescope, another name for the Compton Gamma Ray Observatory
CGSS(catalog) Catalogue of Galactic S Stars
CHARA(organization) Center for High Angular Resolution Astronomy
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
CIDA(instrumentation) Cometary Interplanetary Dust Analyzer, an instrument on the Stardust spacecraft
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
CMBR(celestial object) Cosmic Microwave Background Radiation
CMC(catalog) Carlsberg Meridian Catalogue
CMD(astrophysics terminology) Color-Magnitude Diagram, the Hertzsprung-Russell diagram or similar diagrams
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
COROT(telescope) COnvection ROtation and planetary Transits, a space telescope for detecting extrasolar planets
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
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
CSPN(celestial object) Central Star of Planetary Nebula
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