Basic Astronomical Data

• Zombeck's Handbook of Space Astronomy and Astrophysics
• Coordinate Conversions and Object Locator
• Atomic Data for Astrophysics

Journals

• Astrophysical Journal
• Astronomical Journal
• Pub. A.S.P.
• MNRAS
• Nature
• New Astronomy
• Astronomy and Astrophysics

Abstracts, Papers, and Preprints

• ADS Abstracts
• Web of Science
• astro-ph

Astronomical Conferences

• Astronomy Meetings List

Sky Surveys

• Skyview
• STScI Digital Sky Survey

Observatories

• Space Telescope Science Institute (STScI)
• National Optical Astronomy Observatory (NOAO)
• Kitt Peak National Observatory (KPNO)
• Cerro Tololo Inter-American Observatory (CTIO)
• Gemini Observatory
• National Radio Astronomy Observatory (NRAO)
• European Southern Observatory (ESO)
• McDonald Observatory
• Infrared Space Observatory (ISO)
• Chandra X-ray Observatory
• Canada-France-Hawaii Telescope
• Lowell Observatory
• Dominion Astrophysical Observatory (DAO)

Organizations

• NASA
• NASA-Goddard
• NSF Astronomy Division
• American Astronomical Society
• International Astronomical Union
• Astronomical Society of the Pacific
• SEDS (Students for the Exploration and Development of Space)

Online Images

• Astronomy Picture of the Day
• Digital FITS Images of Bright Galaxies
• Astronomical Image Library
• ASP NGC Images
• GIF Images of Messier galaxies
• GIF Images of Bright Non-Messier Galaxies
• Keel GIF farm
• Shoemaker-Levey NSSDC / SEDS / JPL

Catalogs, Databases, and Archives

• NED
• SIMBAD
• APM
• FIRST
• HST Archive
• NASA's Astronomical Data Center
• HST Guide Star Catalog
• Multimission Archive at STScI (MAST)
• WISARD
• Twin Astrographic Catalog of Star Positions
• HST proposal info / HST GSC
• IUE / IUE Archive Request
• Extrasolar Planets Encyclopedia

Other Sites

• AstroWeb: Astronomical Internet Resources
• MACHO Project
• Princeton Pulsarlab Home Page
• Marcy's ExtraSolar Planets Page
• HST Public Outreach

Chandra/XMM/Astro-E Sites

• CXC / Science / E/PO / MSFC
• ACIS / HRC / HETG / LETG MPE / LETG SRON / MARX
• XMM USA GOF / ESA SOC / XRPS / Helpdesk / SciSim manual / QuickSim manual / Vis / UHB
• Astro-E GOF

Internet Search Sites

• Google / AltaVista / Lycos / Hot Bot / WebCrawler / Yahoo / Excite / Infoseek / Open Text / Looksmart
• Meta Index / Hot Hot List / WhoWhere / 411
• Metacrawler / Dogpile