The graphic telescope is a type of camera lucida that has the power of a telescope. It was invented by Cornelius Varley in 1809. It can be used to draw broad landscapes. Graphic telescopes allow the size of the projected image to be adjusted. They can be used separately, or with a portable table to reduce vibrations. They may also be mounted in a vehicle.
See also List of telescope types
References
External links Camera lucida and Varley Graphic telescope "Using the Patent Graphic Telescope" (video). "The graphic telescope and Varley's artwork". www.sites.hps.cam.ac.uk. Whipple Museum of the History of Science. (includes 1840 magazine article on instrument) A picture of a Graphic telescope, another.