Omegon N 150/750 EQ-4 Astronomical Telescope with 150mm Aperture and 750mm Focal Length : Electronics - Amazon.com
Amazon.com : Orion StarMax 90mm TableTop Maksutov-Cassegrain Telescope Small But Powerful Portable Telescope for Adult & Family Stargazing of Moon, Planets & More : Catadioptric Telescopes : Electronics