Abstract
The status of the fabrication of a large thin hexagonal mirror is described. The mirror will be used in a prototype of the segmented mirror control system for the proposed University of California Ten Meter Telescope. The telescope design calls for a semented primary mirror with thirty-six 1.8-meter diameter hexagonal segments. Each segment will be made to a precisely defined surface with a precisely defined radius of curvature (35m) such that the rms deviation from the ideal surface is less than 30 nanometers.
© 1982 Optical Society of America
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