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Advanced Telescope Systems (ATS)
Ash Manufacturing
Astro Devices Nexus products
Astro-Physics
AstroSystems
Astrozap
Baader Planetarium
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Cambridge University Press
Camden House
Celestron
Cohu
Corning
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IBM
ITT
JMI (Jim's Mobile, Inc.)
Kendrick Systems (KAI)
Ken Graum Press
Leica
Litton
Losmandy/Hollywood Gen. Mach.
Lumicon
Lunt Solar Systems
Lunt Engineering
Meade Instruments
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Santa Barbara Instruments Group
Schott
Sehgal/Hidden Image
Serengetti
Shelyak Instruments
Sirius Technologies
Sky Publishing
Software Bisque
Solarscope Ltd.
Sony
Springer-Verlag
Starbound
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