Diy Kepler Telescope Lens Group 30mm Diameter 50mm Focal Length And 50mm Diameter 300mm Focal Length - Lenses - AliExpress
Amazon.com: Omegon N 76/300 Dobsonian Telescope with 76mm Aperture and 300mm Focal Length : Electronics
Amazon.com : Telescope 70mm Aperture 300mm AZ Mount Astronomy Refractor Travel Telescope for Kids Adults and Beginners Telescope with Tripod and Phone Adapter to Observe Moon and Planet : Electronics
Teleskop-Express: Skywatcher QUATTRO 12-S - 300 mm F/4 Imaging Newton - Steel Tube
Jupiter with 300mm newtonian ( Luis Campos ) - AstroBin
Amazon.com : ToyerBee Telescope, 70mm telescopes for Adults Astronomy & Kids & Beginners, 300mm Portable Refractor Travel Telescope (15X-150X) with A Smartphone Adapter& A Wireless Remote, Astronomy Gifts for Kids : Electronics
Teleskop-Express: Orion VX12L Newtonian Reflector Telescope, Aperture 300 mm f 5.3
Astronomical telescope suitable for children and beginners, astronomical refracting telescope with 70mm aperture and 300mm focal length, portable travel telescope with tripod, smart phone holder and Bluetooth remote control - KENTFAITH