- NetAstro Catalog
- www.visualdeepsky.org
- The Internet Amateur Astronomers Catalog (IAAC), a mailing list for deep sky observers of all levels.
3.8
(si*)
<5
-
5
- The Webb Deep-Sky Society
- www.webbdeepsky.com
- 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.
3.7
(si*)
>50
<5
4
- Messier45
- messier45.com
- 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.
3.6
(si*)
>40
-
4
- DeepSkyPedia
- deepskypedia.com
- 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.
3.5
(si*)
>50
-
3
- Arp's Catalog of Peculiar Galaxies
- arpgalaxy.com
- Provides images from the catalog of 338 peculiar galaxy views gathered by Dr. Halton C. Arp in his Atlas of Peculiar Galaxies.
3.5
(si*)
>50
<5
4
- Deep Sky Observing
- www.deepskyobserving.com
- Deep sky object types and classifications. Includes a Messier interactive map, pictures, constellations and observation guide.
3.2
(si*)
>10
-
4
- Star Observer
- www.starobserver.eu
- Math Heijen provides a collection of visual observing reports on stars, double stars and open clusters.
3.2
(si*)
-
-
3
- Graphite Galaxy
- www.graphitegalaxy.com
- Astronomical sketches of deep sky objects observed by Ferenc Lovro.
3.1
(si*)
<5
-
2
- Visual Deep Sky Observing
- www.andreas-domenico.de
- Galleries of sketches, legend, projects, publications, and links.
3.1
(si*)
-
-
3
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