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GTT60: Galilean Type Telescope of 60mm aperture - the homepage of Nicolàs de Hilster, PhD
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Telescopes 70mm Aperture 700mm AZ Mount, Telescope for Kids Beginners - Walmart.com
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ToyerBee Telescope for Kids& Beginners, 70mm Aperture 300mm Astronomical Refractor Telescope, Tripod& Finder Scope- Portable Travel Telescope with Smartphone Adapter and Wireless Remote : Amazon.sg: Electronics
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astronomical optics, part 2: telescope & eyepiece combined
