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1 July 1990 Engineering with lightweight mirrors
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The purpose of this paper is to help determine whether or not a lightweight mirror is an appropriate engineering solution in place of a more traditional, solid mirror. The relatively recent manufacture of borosilicate lightweight mirrors both by casting1 and by the Gas Fusion process' make this study timely. Because lightweight borosilicate mirror substrates tend to. be substantially less expensive than the equivalent lightweight substrates made of very low expansion materials, a review of the properties of lightweight mirror structures in general will make it possible to determine if the cost savings of the borosilicate substrates are justified when balanced against the performance of the very low expansion mirror substrate materials.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert E. Parks, Richard W. Wortley, and James E. Cannon "Engineering with lightweight mirrors", Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990);


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