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Chretien or Pumpkin? (Popularity:  )
http://chretienorpumpkin.tripod.com/
Devoted to the Prime Minister of Canada. Features pictures and polls.
Category:
Recreation - Humor - Celebrities
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Advanced Optics Limited (Popularity: )
http://advanced-optics.com/
Produces the Vanguard 500, a complete 20" Ritchey-Chretien Telescope system.
Category:
Science - Astronomy - Business - Telescopes, Binoculars and Accessories
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Dream - Telescopes & Accessories (Popularity: )
http://www.dreamscopes.com/
Offers advanced composite telescopes which utilize carbon fiber, Kevlar and honeycomb materials. Other products include Ritchey-Chretien telescopes, mirror cells, mounting plates and rings, and parts and accessories.
Category:
Science - Astronomy - Business - Telescopes, Binoculars and Accessories
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R.F. Royce - Precision Optical Components (Popularity: )
http://www.rfroyce.com/
Compound reflective optical systems including Cassegrain, Ritchey-Chretien, Dall-Kirkham and various modifications. Refractive systems including achromatic and apochromatic objectives and full aperture corrector catadioptric systems including SchmidtMaksutov ...
Category:
Science - Astronomy - Business - Telescopes, Binoculars and Accessories
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