• Astronomy Magazine
• Sky & Telescope Magazine

• Astro-physics Telescopes - Yahoo! User Group
• Losmandy Mounts - Yahoo! User Group
• Santa Barbara Instrument Group (SBIG) CCD Cameras - Yahoo! User Group
• Seattle Astronomical Society
• Takahashi Telescopes - Yahoo! User Group

• AntÓnio CidadÃo's - Solar System Astrophotography
• Astrocruise.com - Astrophotography by Philip Perkins
• Astrophotographer.com - Wil Milan's Astrophoto Gallery
• Chris Vedeler's - Astronomy Gallery
• David Morris - Astrophotography with the STV
• Galaxyphoto.com - Jason Ware's Astrophotography
• Mike Roger's - Astrophotography
• Stephen Girimont's - Astrophotography and Photoillustrations
• Thierry Legault - High Resolution CCD Imaging
• Tom Carrico - Astrophotography
• William McLaughlin - Astrophotography

• Astronomical Image Library - Find Any Astrophoto Here
• Astronomy Picture of the Day
• Astronomy Software on the Net - Freeware and Shareware
• Astrophotography Exposure Calculator by Michael Covington
• Astrophotography for the Amateur by Michael Covington 
• Company 7 - Telescope Reviews and Lots of info
• The Digitized Sky Survey
• High Energy Astrophysics Science Archive Research Center - "WebStars" (Lots of Links and Info)
• IDA - International Dark-Sky Association
• IMO - International Meteor Organization: Meteor Showers (When and Where)
• Lunar Observations - Robinson Lunar Observatory
• NASA - National Aeronautics and Space Administration
• NASA - Jet Propulsion Laboratory 
• The Night Sky This Week
• STScI/HST Pictures - Public Photos by the Hubble Space Telescope
• Harvard-Smithsonian - Center for Astrophysics
• The Universe Today - Space News From Around the Internet, Updated Every Weekday

• Anacortes Telescope and Wild Bird - Reseller of Astronomical Products
• Astro-Physics Telescopes
• Celestron Telescopes
• Cyanogen Productions - MaxIm DL/CCD Image Processing Software
• Digital Light and Color - Picture Window
• Losmandy Astronomical Produces - Telescope Mounts
• Lumicon - Reseller of Astronomical Products
• Santa Barbara Instrument Group (SBIG) - CCD Cameras and Accessories
• Software Bisque - Astronomical Software
• Land, Sea, and Sky, Texas Nautical Repair - Takahashi Telescopes

• Astromart - Used Telescopes and Accesories for Sale
• Ebay - Find Used Cameras, Lenses, etc..

• FilterHouse - Camera Lens Filters
• Portable Planetariums