Flextube Dobsonians

 In 1668, Sir Isaac Newton invented the first reflector telescope. By using mirrors instead of optical lenses, Newton was able to increase the aper...

For decades, the Dobsonian stood as a DIY staple of amateur astronomy, usually constructed with two mirrors, a tube and a base. Often referred to a...

 In 1668, Sir Isaac Newton invented the first reflector telescope. By using mirrors instead of optical lenses, Newton was able to increase the aper...

For decades, the Dobsonian stood as a DIY staple of amateur astronomy, usually constructed with two mirrors, a tube and a base. Often referred to a...

For decades, the Dobsonian stood as a DIY staple of amateur astronomy, usually constructed with two mirrors, a tube and a base. Often referred to a...