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Proceedings Paper

Thermal design concept of JNLT
Author(s): Izumi Mikami; Noboru Itoh; Satoru Kotoh; Hiroyasu Ando
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Paper Abstract

The seeing degradation in the Japanese National Large Telescope (JNLT) caused by its hemispherical dome is investigated. A possible plan of the JNLT site layout and the thermal control concept are introduced in order to attempt to reduce the seeing degradation induced by the dome to the 0.1 arcsec FWHM range budgeted. A three-dimensioal compressible fluid analysis of the inside and outside the dome, including heat transfer effect, is developed and used to understand the seeing degradation mechanism as well as the wind buffet effect on the telescope and the primary mirror.

Paper Details

Date Published: 1 July 1990
PDF: 11 pages
Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); doi: 10.1117/12.19223
Show Author Affiliations
Izumi Mikami, Mitsubishi Electric Corp. (Japan)
Noboru Itoh, Mitsubishi Electric Corp. (Japan)
Satoru Kotoh, Mitsubishi Electric Corp. (Japan)
Hiroyasu Ando, National Astronomical Observatory (United States)

Published in SPIE Proceedings Vol. 1236:
Advanced Technology Optical Telescopes IV
Lawrence D. Barr, Editor(s)

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