Thermal design concept of JNLT

Details Thermal design concept of JNLT Thermal design concept of JNLT

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1236..532m&link_type=abstract

IN: Advanced technology optical telescopes IV; Proceedings of the Meeting, Tucson, AZ, Feb. 12-16, 1990. Part 1 (A91-23201 08-89

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Equipment Specifications, Heat Flux, Mirrors, Seeing (Astronomy), Telescopes, Thermal Analysis, Astronomical Observatories, Block Diagrams, Computational Grids, Systems Engineering, Temperature Control

Scientific paper

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.

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