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Internet Telescope Exchange Classifieds (Popularity:  )
Listings of telescopes and accessories for sale or trade.
Category: Science\Astronomy\Amateur\Classifieds
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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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ITE Astronomy (Popularity: )
Retailer of telescopes, telescope mounts, binoculars, CCD cameras, accessories, books and software. Located in Florida.
Category: Science\Astronomy\Business\Telescopes, Binoculars and Accessories
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