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. Arp's Catalog of Peculiar Galaxies - Provides images from the catalog of 338 peculiar galaxy views gathered by Dr. Halton C. Arp in his Atlas of Peculiar Galaxies. Ian's Astro Page - Sketches, scratchings, pictures, and links, and construction of piggyback camera adaptor. A CCD Tour of the Universe - Includes deep sky objects and solar system CCD galleries, techniques and resources, and equipment. Visual Deep Sky Observing - Galleries of sketches, legend, projects, publications, and links. Deep Sky Intro - Article on various types of deep sky objects. Deep Sky Observing - Deep sky object types and classifications. Includes a Messier interactive map, pictures, constellations and observation guide. Iiro's DeepSky Sketches - A collection of my deepsky sketches and general information about deepsky objects and telesopes. Challenging Observing Projects for Amateur Astronomers - Includes 100 peculiar galaxies, off the beaten path, observing galaxy clusters, the Abell planetaries, and the ultimate observing list with images. Secrets of Deep-Sky Observing - Pointers observers should know includes sky brightness, dark adaptation, averted vision, high power, capturing color, and other tips. Ray Cash's Deep-Sky Page - Articles, information, photos, and links about deep-sky observing. DeepSkyPedia - Wiki project aiming to help amateur astronomers in planning their observing sessions. Includes more than 4,000 articles describing the appearance of various deep sky objects in instruments of all sizes. Star Observer - Math Heijen provides a collection of visual observing reports on stars, double stars and open clusters. Graphite Galaxy - Astronomical sketches of deep sky objects observed by Ferenc Lovro. The Webb Deep-Sky Society - International society of amateur and professional astronomers specializing in the observation of deep sky objects. Includes a forum where members can communicate and publish the results of their observations. Astronomical Sketches - Sketches of astronomical objects made at the telescope by Michael Geldorp.