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DARTWOOD Astronomical Telescope 360-Degree Rotational Telescope - Multiple Eyepieces Included for Different Zoom (Black/White) TelescopeUS - The Home Depot
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Sky-Watcher Classic 250P 10" Dobsonian - S11620
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Amazon.com : Astromania Bahtinov Mask Focusing Mask for Telescopes - FM230mm for a Tube Outer Diameter (OD) from 250mm-290mm - can be Mounted with The Brass Screws Inside or Outside The drawtube :
Amazon.com: Sky Watcher Sky-Watcher Classic 250 Dobsonian 10-inch Aperature Telescope – Solid-Tube – Simple, Traditional Design – Easy to Use, Perfect for Beginners (S11620) : Clothing, Shoes & Jewelry