These sites I consider useful for a variety of reasons: some as resources for information, and some to keep abreast of what other amateurs are doing in the hobby. Links are checked periodically, let me know if they don't work or you have suggestions. This list is not meant to be exhaustive.

Adventures in Deep Space Visual challenges for large apertures; great place to find photographic fields of interest

Aladin Sky Atlas (The) An interactive sky atlas (Java based) using various professional sky surveys

Aladin previewer Quick way to view photographic images of selected objects

American Association of Variable Star Observers (AAVSO) Variable star observation/analysis/reporting

Association of Lunar and Planetary Observers (ALPO) High quality (mostly visual) solar system observations

Astronomical Data Center Professional level Astronomical Catalogs

From the ADS - Look up information on selected objects from professional papers

Astronomical Society of the Pacific Astronomy and Education for the professional and amateur

Astronomy Picture of the Day Always an interesting new image, sometime professional, sometimes amateur

Atlas of Peculiar Galaxies Dr. Halton C. Arp's atlas of peculiar galaxies, from the California Institute of Technology

Arp's Catalog of Peculiar Galaxies Dennis Webb's great page devoted to the Arp catalog

CDS Service for astronomical Catalogs (The) Strasbourg astronomical Data Center collection of data catalogs

Cosmic Voyage, The Online Resource for Amateur Astronomers Neat resource covering many subjects for the amateur

CRA Lyons Extremely comprehensive page dealing with Galaxies. Includes references, links, databases, etc.

Harold Corwin's Home Page Data on Galaxies (Catalogs, RC3)

Hubble Images (Public) What we all wish for

IAU: Central Bureau for Astronomical Telegrams Report discoveries, check out latest discoveries

International Occultation Timing Association (IOTA) THE place for up-to-the-minute occultation predictions

I.S.N. - International Supernovae Network A great place to check if you think you've imaged a Supernova

Messier and NGC Images Useful new (June 2003) page to compare DSS images at different focal lengths and CCD chips

NASA/IPAC Extragalactic Database (NED) Great place to search for information about, in and around objects

NGC / IC Project Wealth of information, corrections, insights and descriptions about the two classic catalogs

SEDs The complete NGC/IC catalog from the NGC 2000.0 (Roger Sinnott) with images available

SkyView POSS images, many advanced ways of downloading the digital sky

StarLight Xpress Image Gallery A selection of images taken with the Starlight Xpress CCD camera

STSci Digitized Sky Survey (DSS) 10X compression images of POSS First & Second Generation surveys (South too!)

Webb Society Amateur visual observations of all kinds of deep sky objects

Astro Links This is a page devoted entirely to astronomical related links (over 280)

Astro Photography Mailing List (APML) Archives Threads from the Astro Photography Mailing List (by month)

Dublin Night Sky Observer Nice site with Astro News, Software (some free, some not), articles, etc.

International Dark-Sky Association (IDA) Because all deep-sky astrophotographers need a dark sky site

Check out this unique map of dark sites in the United States Select site to find limiting magnitude

Jeff Bondono's Home Page Many links, advice and software

John Walker An amazing amount of useful software (click on Science/Astronomy and space)

Southern California Weather (NOAA) Whether we like it or not!

Space Archive Interesting 'sky' events for So Cal, including upcoming Vandenberg AFB launch events, maintained by Brian Webb

The Clear Sky Clock(s) A way cool weather forecasting site for amateur astronomers! By Allan Rahill and Attilla Danko.

The Weather Channel National weather with links to many cities

Wide Field DSS2 Images Site comprised of images derived from the Digitized Sky Survey

Astromart You can sell and trade astronomical equipment

Astronomy Mall Astronomical equipment and vendors

Astro-Physics, Inc High quality refractive optics, mounts and accessories

Ceravolo Optical Systems High Definition Maksutov-Newtonian Telescopes

Bill and Sally Fletcher High resolution Tri-Color Astrophotography, Constellation portraits; also sell astronomical books and supplies

Tony and Daphne Hallas Incredible Film and Digital imaging; custom film photo /digital services

Fairchild Imaging Industrial and Scientific grade CCD cameras from $10k and up

Fotos Search Image Library Collection of astronomy images from, galaxies to planets to NASA images and much more. No access charges, registration requirements

Megastar Sky Atlas My favorite charting program, current release is verion 5, indispensable! (Now sold by Willmann-Bell)

New Mexico Skies "A Guest Observatory for the Sophisticated Amateur Astronomer"

Jack Newton Florida Bed & Breakfast, plus imaging with a world renowned astroimager

Wally Pacholka Award Winning Comet & Meteor Astro Photos for sale

Star Ware Phil Harrington's page on astronomical products (and more)

Software Bisque Astronomy software and equipment

Jason Ware Wide and Narrow-Field Color Astrophotography with Meade instruments

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