Brian Greig Orreries (Popularity:  )
Beautiful hand crafted orreries for teaching and personal use.
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CUBEX Portable Planetarium (Popularity: )
Portable astronomical planetarium with inflatable dome.
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Eclipse Masters (Popularity: )
Designs and manufactures various products in the areas of astronomy, entertainment, optics, as well as unique advertising items.
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Celestial Products (Popularity: )
Astronomy and science resources like moon calendars, books, charts, atlases and gifts for all ages.
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Orion Telescopes and Binoculars (Popularity: )
Dealer of telescopes, binoculars, and accessories for amateur astronomers and nature enthusiasts.
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Celestron International (Popularity: )
Manufacturer of a wide range of telescopes and accessories.
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Apogee Inc. (Popularity: )
Distributor of wide range of telescopes and accessories.
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Astronomy Magazine (Popularity: )
Amateur astronomy magazine.
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David Chandler Company (Popularity: )
Quality software and publications for astronomy and astronomy education.
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Starlab Portable Planetarium (Popularity: )
Portable planetarium and low-cost hands-on science materials.
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Software Bisque (Popularity: )
High quality astronomy software and high tech parts and telescopes accessories.
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Rob Walrecht Planispheres (Popularity: )
Planispheres for various latitudes for northern and southern hemispheres and in various languages as well. Also customized planispheres.
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Space Craft International (Popularity: )
Scale models kits of spacecrafts.
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Spaceshots (Popularity: )
Astronomy books, software, star atlases, observing guides, Earth imagery and space related products.
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Willmann-Bell, Inc. Publishing (Popularity: )
Publishers and booksellers of astronomy books, maps, charts and catalogs.
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MMI Corporation (Popularity: )
Educational materials for astronomy including 35mm slides, videos, CD-ROMs, models, planetariums, celestial and planetary globes, murals, spacecraft kits.
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Goto Optical Mfg. Co. (Popularity: )
Manufacturer of big and scholar planetariums.
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Space Posters Gateway (Popularity: )
Provides information and prices of space posters, along with related links and space news.
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