Graphic telescope
The graphic telescope is a type of camera lucida that has the power of a telescope. It was invented by Cornelius Varley in 1809.[1] It can be used to draw broad landscapes.
Graphic telescopes allow the size of the projected image to be adjusted.[2] They can be used separately, or with a portable table to reduce vibrations.[1][3] They may also be mounted in a vehicle.[4]
References
- ^ a b "Cornelius Varley". www.gracesguide.co.uk. Grace's Guide to British Industrial History.
- ^ "Camera Lucida & Varley Graphic Telescope - Victoria and Albert Museum". Victoria and Albert Museum. 28 December 2010. Archived from the original on 28 December 2010.
- ^ "Original ad for graphic telescope".
- ^ "Cornelius Varley's Patent Graphic Telescope". Cloudy Nights.
See also
External links
- "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.
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