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The University of California Ten Meter Telescope Project: Recent Developments

Published online by Cambridge University Press:  12 April 2016

Jerry E. Nelson
Jerry E. Nelson*
Affiliation:
Lawrence Berkeley Laboratory, Space Sciences Laboratory, and Astronomy Department, University of California, Berkeley CA 94720

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The University of California has been actively designing a ten meter telescope (TMT) for optical and infrared groundbased astronomical observations since 1977. The project, now developed in considerable detail, is described in a series of Ten Meter Telescope Reports, technical notes, and publications (see, for example, Nelson 1980,1981,1982). In order to achieve an acceptable cost for the project, the design departs substantially from conventional telescope designs. Recognizing that the cost is roughly proportional to the weight of the structure and to the enclosed volume, we have made the reduction of weight and size a high priority goal of the design. To achieve these objectives a light-weight segmented primary mirror was designed. The parabolic primary is a mosaic of 36 hexagonal segments. In addition, the primary focal ratio is f/1.75, thus resulting in a short telescope tube; this allows a very compact dome.

Type
VI. Very Large Telescope Projects
Information
International Astronomical Union Colloquium , Volume 79: Very Large Telescopes, their Instrumentation and Programs , 1984 , pp. 755 - 765
Copyright
Copyright © ESO 1984

References

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