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MODAS - Modern Optical Design and Analysis Software (Popularity:  )
Paraxial and Seidel calculations, spot diagrams, ray fans, 3D wave aberrations and energy distribution, optical ...
Category: Science\Physics\Optics\Software
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Astro-Physics Inc. (Popularity: )
Telescopes, mounts and accessories for observers and astrophotographers.
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Parks Optical (Popularity: )
Newtonian and Newtonian-Cassegrain reflecting telescopes, optical tube assemblies, telescope making components, binoculars, spotting scopes and ...
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Eastbourne Astronomical Society (Popularity: )
Details of upcoming and past meetings and events, a newsletter, contact details and links.
Category: Science\Astronomy\Amateur\Organizations
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Parks Optical, Inc. (Popularity: )
Manufacturer microscopes and optical components. A selection of components and accessories.
Category: Science\Instruments and Supplies\Laboratory Equipment\Optical
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Clement Focuser (Popularity: )
Uniquely designed, patented focuser for use on a variety of telescopes. Offers optional electric focus ...
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Astrozap Dew Shields (Popularity: )
Aluminum and flexible dew shields, caps and telescope covers for amateur telescopes. Many products are ...
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Our Dark Skies (Popularity: )
International online community of amateur astronomers.
Category: Science\Astronomy\Amateur\Chats and Forums
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Orion Telescopes and Binoculars (Popularity: )
Dealer of telescopes, binoculars, and accessories for amateur astronomers and nature enthusiasts.
Category: Science\Astronomy\Business\Educational Resources
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Astronomy Today - Telescope Buyers' FAQ (Popularity: )
Guide for buying and using amateur telescopes, accessories, vendors, and various resources.
Category: Science\Astronomy\Amateur\Beginners
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Kay Optical (Popularity: )
Terrestrial and astronomical telescopes, binoculars, microscopes, night vision equipment and other optical instruments, plus an ...
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Dave Miller Astrophotography (Popularity: )
Galleries, equipment information, and resources.
Category: Science\Astronomy\Amateur\Astrophotography and CCD Imaging
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Litebox Telescopes (Popularity: )
Designs and manufactures portable Dobsonian telescope frames in the 12.5 to 18 inch aperture range.
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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It's Full of Stars (Popularity: )
Equipment information, gallery, articles, and links, with information for the East Sussex Astronomical Society.
Category: Science\Astronomy\Amateur
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Vixen North America (Popularity: )
Telescopes and telescope mounts, binoculars, Lanthanum eyepieces and other accessories.
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Hioptic Military and Professional Outdoor Optics Company (Popularity: )
Chinese manufacturer and exporter of military and outdoor optical systems. Product lines include spotting scopes, ...
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Orion Telescope Center (Popularity: )
Manufacturer and retailer of telescopes, spotting scopes, binoculars, eyepieces and accessories. Located in California.
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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NJ Night Sky (Popularity: )
Online astronomy community
Category: Science\Astronomy\Personal Pages
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TeleVue Optics (Popularity: )
Premium refractor telescopes, eyepieces, and accessories. Products include Nagler eyepieces, Panoptic eyepieces, Radian eyepieces, Plossl ...
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Optical Guidance Systems (Popularity: )
Research-grade, observatory class telescope systems for professional and discriminating amateur astronomers, plus custom designed instrumentation ...
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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Refractor
