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Orion StarBlast 102mm Altazimuth Travel Refractor Telescope - Portable Beginner Telescope for Views of Moon, Planets, and Deep-Sky Nebulas : Electronics
Celestron 11 Rowe-Ackermann Schmidt Astrograph (RASA 11) Optical Tube
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Orion Observer II 70mm Altazimuth Refractor Telescope for Beginner Stargazing - Ideal First Telescope Gift for Adults and Families : Electronics
[PRODUCT PARAMETERS]: The highest magnification is 336 times. It is a professional astronomical telescope. It is suitable for astronomical observation
Astronomical Telescope Professional Adult Telescope Refractor Mirror View of The Scenery Hiking Maximum 336 Times Magnification
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Telescopes, explained by RP; operation principle, refractors, reflectors, aberrations, angular resolution, magnification, field of view, light gathering power, astronomical, terrestrial
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PROFESSIONAL TELESCOPES – Officina Stellare
GeoSafari Omega Refractor Telescope - Minds Alive! Toys Crafts Books
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Refracting telescope - Wikipedia