Fabrication Of Large RZ Glass Discs
| Autor: | Meinel, Aden B. |
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| Rok vydání: | 1965 |
| Předmět: | |
| Druh dokumentu: | Technical Report |
| Popis: | QC 351 A7 no. 03 The problems connected with the utilization of large high -resolution telescopes are concentrated into two principal areas. The first concerns the physical properties of the mirror disc; the second involves the pro- cessing of the mirror in the optical shop. This technical report concerns, 1) the design of a new type of opti- cal polisher, one with a stationary mirror platform, and, 2) the casting of large discs made up of a new type of glass. This new glass, designated type RZ by Owens -Illinois, has a zero coefficient of thermal expansion at 25° Centigrade. A proposal for research in these two areas has already been made. This research has been supported, in part, under Contract ONR -2173- (12) by the Advanced Research Projects Agency and administered by the Office of Naval Research. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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