Ian's Astro Page - Sketches, scratchings, pictures, and links, and construction of piggyback camera adaptor.
Iiro's DeepSky Sketches - A collection of my deepsky sketches and general information about deepsky objects and telesopes.
List of Common Deep Sky Catalogs - General, supernova remnants, planetary nebulae, diffuse nebulae, dark nebulae, open clusters, globular clusters, galaxies, clusters of galaxies, double stars, and references.
Messier45 - Observing guide, articles, Messier Gallery, Herschel 400 and Deep Sky Browser which allows the ability to search deep sky objects and view maps and images of over 600,000 objects.
The Messier Catalog - Images and galleries, marathoner list, and new nebula and supernovae.
Messier Marathon - Includes instructions, biography, dates, timeline, posters, NASA tv, and links and information.
The National Deep Sky Observers Society - Contains information, challenges, galaxy clusters, globular clusters, open star clusters, naked eye observations, observing planetary nebulae, the Milky Way, and star hopping.
NetAstro Catalog - The Internet Amateur Astronomers Catalog (IAAC), a mailing list for deep sky observers of all levels.
The NGC/IC Project - An attempt to correctly identify all the original objects, starting with the original discoverer's notes and working forward in time to encompass the work of contemporary astronomers, both professional and amateur.
Secrets of Deep-Sky Observing - Pointers observers should know includes sky brightness, dark adaptation, averted vision, high power, capturing color, and other tips.
