Primary mirror segment fabrication for CELT

Terry S. Mast; Jerry E. Nelson; Gary E. Sommargren

doi:10.1117/12.391538

20 July 2000 Primary mirror segment fabrication for CELT

Terry S. Mast, Jerry E. Nelson, Gary E. Sommargren

Proceedings Volume 4003, Optical Design, Materials, Fabrication, and Maintenance; (2000) https://doi.org/10.1117/12.391538
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

The primary mirror of the proposed California Extremely Large Telescope is a 30-meter diameter mosaic of hexagonal segments. An initial design calls for about a thousand segments with a hexagon side length of 0.5 meters, a primary-mirror focal ratio of 1.5, and a segment surface quality of about 20 nanometers rms. We describe concepts for fabricating these segments.

Citation Download Citation

Terry S. Mast, Jerry E. Nelson, and Gary E. Sommargren "Primary mirror segment fabrication for CELT", Proc. SPIE 4003, Optical Design, Materials, Fabrication, and Maintenance, (20 July 2000); https://doi.org/10.1117/12.391538

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