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Nelson Devices (Popularity:  )
http://www.nelsondevices.com/
Produces Quick-Connectors to connect accessories to a variety of commercial telescopes. Site includes compatibility charts, example applications, and FAQ.
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North United Co., Ltd. (Popularity: )
http://www.northoptics.com/
Chinese manufacturer of binoculars, telescopes, riflescopes, spotting scopes, night vision scopes, golf scopes.
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NPZ Optics State Corp. (Popularity: )
http://www.npzoptics.com/
Novosibirsk Instrument-making Plant is one of the leading Russian manufacturers of high quality optical equipment for law enforcement and civilian ...
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O'Neil Photo & Optical Inc. (Popularity: )
http://www.oneilphoto.on.ca/
International mail order & retail for telescopes, binoculars and other astronomy related products. Located in Canada.
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Oberwerk Corporation (Popularity: )
http://www.oberwerk.com/
Produces a variety of binocular designs for both terrestrial and astronomical applications.
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Oceanside Photo and Telescope (Popularity: )
http://www.optcorp.com/
Telescopes, binoculars, CCD cameras, spotting scopes, microscopes, night vision equipment and accessories. Product lines include Meade, Celestron, TeleVue, Losmandy, Orion, ...
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Optec, Inc. (Popularity: )
http://www.optecinc.com/
Photometers, telecompressors, electric Crayford style focusers, filter wheels and filters, and optical couplers for video microscopy.
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Optic Mall (Popularity: )
http://opticmall.com/
Direct on-line retailer of JAWA telescopes and binoculars. Located in Minnesota.
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Optic-Craft Machining (Popularity: )
http://www.opticcraft.com/
Offers a variety of complete German equatorial telescope mounts for telescopes up to 20" in aperture. Also manufactures precision clock ...
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Optical Development Workshop of Academy of Sciences (Popularity: )
http://www.optikavod.cz/
Czech Republic developer and manufacturer of optics elements and systems.
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Optical Mechanics, Inc. (Popularity: )
http://www.opticalmechanics.com/
Fabricates research-quality Newtonian, Cassegrain, Ritchey-Chretein and custom optics, opto-mechanical instruments including LIDAR systems and collimators. Manufactures the Nighthawk line of ...
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Opticast, Inc. (Popularity: )
http://www.opticastmirrors.com/
Produces, using a patented casting technique, low cost diffraction limited replica optical mirrors for astronomical and other applications.
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Optics For You (Popularity: )
http://www.opticsforyou.com/
On-line sales of telescopes, microscopes, night vision equipment, spotting scopes and other optics, produced by the famous Russian manufacturer LOMO. ...
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OpticsHQ (Popularity: )
http://www.opticshq.com/
Supplier of night vision device including goggles, binoculars, rifle scopes, and other daytime and night vision optics.
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Opticswarehouse (Popularity: )
http://www.opticswarehouse.com/
Discount supplier of sports optics equipment in the UK. Sells scopes, binoculars, telescopic sights, rangefinders, night vision equipment and clothing. ...
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Orion Telescope Center (Popularity: )
http://www.telescope.com/
Manufacturer and retailer of telescopes, spotting scopes, binoculars, eyepieces and accessories. Located in California.
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Parallax Instruments (Popularity: )
http://www.parallaxinstruments.com/
Newtonian and classical Cassegrain astronomical telescopes, German equatorial mountings, tripods and custom portable or permanent observatory welded steel piers.
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Parks Optical (Popularity: )
http://parksoptical.com/
Newtonian and Newtonian-Cassegrain reflecting telescopes, optical tube assemblies, telescope making components, binoculars, spotting scopes and microscopes, plus eyepieces and accessories.
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Pegasus Optics (Popularity: )
http://www.pegasusoptics.com/
Optical manufacturer of parabolic primary mirrors and elliptical diagonals for astronomical telescopes. Available primary sizes range from 12-1/2" to 25".
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Peterson Engineering Corp. (Popularity: )
http://peterson-web.com/
Buck's precision gears for LX-200s, EZ Balance counterweights, EZ Clutch and EZ Focus kits, Eye Opener visual backs, and Mounting ...
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