These
instruments offer an incredible aperture-to-price ratio.
The Dobsonian mount,
popularized by John Dobson in the late 1970's, is a very simple but effective
method of mounting a Newtonian Reflector, based on the alt-azimuth principle.
Fast and easy to set up, the Dobsonian mount consists of a box-type mounting which
allows the telescope to pivot in altitude, while the box itself is rotated on
a base in azimuth. The secret of the design is to correctly balance the optical
tube and to use frictional materials, which allow it to move easily when nudged
but to stay in position when not. The mount is designed to be driven by hand as
opposed to slow motion controls. Tube material: Aluminium
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