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Links     Sky Survey TASS, The Amateur Sky Survey TOMBO PROJECT (Transient Observatory for Microlensing and Bursting Objects) The LINEAR Project The Spacewatch Project NEAR-EARTH ASTEROID TRACKING HOME PAGE (NEAT) LONEOS -- The Lowell Observatory Near-Earth Object Search Sonneberg Observatory All Sky Patrol Astrophysics (ASPA) The ACIT Imaging System (Crni Vrh Observatory, Slovenia) Stardial Statitionary device for 24-hour survey outside. Tenagra Observatories Supernova survey by Michael Schwartz The Hanna City Robotic Observatory Remote control telescope and EzPhot: CCD Photometry Software NMH Asteroid Search HOU (Hands On Universe) Asteroid Search Project International Small Telescope Cooperative (ISTeC) Robotic Optical Transient Search Experiment Sloan Digital Sky Survey The All Sky Automated Survey Variable star survey with 135-mm f/1.8 camera lens. Hands On Universe The Katzman Automatic Imaging Telescope Automatic supernovae search at Lick Observatory. THE OPTICAL GRAVITATIONAL LENSING EXPERIMENT (OGLE) CATALINA SKY SURVEY Images from the Faint Sky Variability Survey The Two Micron All Sky Survey at IPAC (2MASS) The All Sky Automated Survey (ASAS) SOFIA: Stratospheric Observatory for Infrared Astronomy The ROSAT X-Ray All-Sky Survey International Consortium of Robotic Astronomical Researchers Pi of the Sky Organization IAU: Minor Planet Center VSNET (Variable Star Network) AAVSO - American Association Of Variable Star Observers International Supernovae Network Astronomical Data Center -- NASA GSFC Variable Stars Web Server (Czech Republic) Variable stars data, softwares, etc. AFOEV - Association Francaise des Observateurs d'Etoiles Variables Online Service Asteroid Ephemeris (ASTEPH) JPL's HORIZONS System Ephemeris of bodies in the Solar System and spacecrafts. Minor Planet Checker Ephemeris of minor planets of a point, especially near by a galaxy. Asteroids near Galaxies New Object Ephemeris Generator Ephemeris of minor planets just after discovery. General Variable Star Search Gateway Magnitude/Flux Density Converter: Point Sources Small-Body Search Software Project Pluto Guide, a desktop planetarium. Astrometrica Astroart Image processing, astrometry and photometry, etc. ESO Imaging Survey -- Useful Documentation and Software SExtractor, SkyCat, etc. IRAF -- Image Reduction and Analysis Facility HCOMPRESS Compression especially for astronomical images. StatCodes (On-line statistical software for astronomy and relat) SPS: Stellar Photometry Software Fitsblink home page DASH Analysis software for Sloan Digital Sky Survey ADC XML Resources Page XML for Astronomy JSky Java Components for Astronomy The IDL Astronomy User's Library Welcome to the Astrometrica Homepage libnova Free library of astronomical routines. Catalog The Hipparcos and Tycho Catalogues Celestial Object Reference Network USNO-A2.0 online service at Lowell Observatory. VizieR Service Search service of GSC, USNO-A1.0/A2.0, and many catalogs. STScI Catalogs and Surveys Branch - Guide Star Catalogue GSC 1.1 and 1.2. List of Supernovae List of all supernovae since 1885. Revision list for GCVS. Dictionary of Nomenclature of Celestial Objects The Asteroid Orbital Elements Database GSC-ACT files and information USNO CCD Astrograph Catalog ( UCAC ) IRSA Catalog Scanning (CatScan) Supported Catalogues Catalogues supported by the PIXY System 2 Gamma-Ray Burst Afterglows Information About Recent Specially-Selected GRBs/SGRs/Transients GATOR Query Service for 2MASS, IRAS, FIRST, etc. Guide Star Catalog II Astronomical Data Center CATALOG VIEWER A Catalog and Atlas of Cataclysmic Variables General Catalogue of Variable Stars The Local Group of Galaxies Image Astronomical Image On-line Access Interface Interface for DSS (Digitized Sky Survey). SkyView Virtual Observatory Pedro Re's Astronomical CCD Imaging Page CCD images and CD-ROMs (galaxies, supernovae, etc.) CCD Catalog of Galaxies by Enrico Prosper 2MASS data, etc. NCSA Astronomy Digital Image Library (ADIL) Archive of astronomical research-quality images. IPAC -- Infrared Processing and Analysis Center IRAS Sky Survey -- query interface MOKA (Mitaka-Okayama-Kiso data Archival System) Multiband Astronomical Imaging Service ON-line Star gazing camera on Mt.YATSUGATAKE Real-time wide-field CCD sky image. HST Archive 2MASS All Sky Quicklook Image Server The USNO Flagstaff Station Finder Chart Service The STScI Digitized Sky Survey AFA: Amateur FITS Archive Sloan Digital Sky Survey SkyServer The Night Sky Live SkyMorph Home Page Search engine of NEAT/DSS/POSS/USNO images. Experimental sky camera Regularly imaging the night sky at Perth Observatory. Archive SIMBAD on the Web Astronomical objects identification and bibliographical references search. Starlink Archives of softwares, documents, WWW links, etc. Astro Archive Search engine of astronomical articles in various mailing lists. Catalogs/Journals Archived Data Service WFPDB SOFIA -- The Wide-Field Plate Database Index of wide field plate (off-line) archives. TREASURE-HUNTING IN ASTRONOMICAL PLATE ARCHIVES Workshop on plates scanning at Sonneberg observatory. Centre de Donnees astronomiques de Strasbourg JVO - Japanese Virtual Observatory SkyDOT - Sky Database for Objects in Time-Domain Northern Sky Variability Survey (NSVS), etc. 4-Dimensional Digital Universe (4D2U) Project The International Variable Star Index (VSX) Database of variable stars @ AAVSO Science GCVS Variability Types and Distribution Statistics of Designated Variable Stars According to their Types of Variability Variable Stars - Types Handbook of Space Astronomy and Astrophysics Intrinsic b-y, H-beta (for B stars), and V-I colors, and absolute magnitudes Photometric properties of low-mass stars and brown dwarfs Relations between absolute magnitude and color. Intrinsic colours as a function of spectral type The Photometric Database Definition of standard color systems. Magnitude System and Color Conversion Formulas Observation TOMOE Project Observations of eclipsing variables. Robotic Astronomy Rent-a-scope. Instruments Filters & CCDs. A Comparison of Various CCD Chips CCD Spec Sheets Observational Mishaps CCD Chip Data Tables