Amazon.com: Omegon Dobson Telescope Advanced X N 304/1500 : Electronics
Choosing and Using a Dobsonian Telescope: Everything you need to know to get started in astronomy and astrophotography: Hall, Allan: 9781546580591: Amazon.com: Books
The Dobsonian Telescope: A Practical Manual for Building Large Aperture Telescopes: Kriege, David, Berry, Richard: 9780943396552: Amazon.com: Books
Amazon.com: Omegon Dobson Telescope Advanced N 254/1250 : Electronics
Amazon.com: Omegon Dobson Telescope Advanced N 203/1200 : Electronics