Design of a 3.5-metre prototype of an 8-metre "floating" spherical telescope.

Details Design of a 3.5-metre prototype of an 8-metre "floating" spherical telescope. Design of a 3.5-metre prototype of an 8-metre "floating" spherical telescope.

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988vlti....1..111h&link_type=abstract

ESO Conference on Very Large Telescopes and their Instrumentation, Vol. 1, p. 111 - 117

Physics

Very Large Telescopes: Optical Design

Scientific paper

The "Floating" Telescope (FT) design is essentially a domeless fork-mounted spherical telescope with conventional drive and position encoding but with most of the weight taken off the bearings by floatation in a water mixture. Unlike conventional, domed, large telescopes, hydrostatic, heat producing bearings are not required for the FT because of the light load on the bearings. A major advantage of the FT is the simplicity and versatility of its operation. The FT can have an equatorial drive even for telescopes of 10 metres aperture, thus eliminating field rotation and simplifying the design and operation of instruments.

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