Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.160..173m&link_type=abstract
(Group of Optical and Infrared Astronomers in Japan, Astronomical Society of Japan, Inamori Foundation, et al., International Sy
Astronomy and Astrophysics
Astrophysics
2
Domes (Structural Forms), Structural Design, Telescopes, Design Analysis, Japan, Temperature Distribution, Thermal Analysis, Thermal Emission
Scientific paper
In order to enable the Japanese National Large Telescope (JNLT) to attain the highest image quality as a ground-based telescope, 0.1 arcsec r.m.s. on 80 percent light energy diameter basis is budgeted to the dome-induced seeing degradation as a design goal. Feasibility of this goal has been studied, using the latest design concept of the dome. The JNLT dome was modeled on the latest design plan for dynamic thermal analysis. Dynamic thermal analysis was performed to attain temperature distribution in the dome. The seeing degradation induced by the dome was predicted using the thermal analysis result. Results indicate that the design goal is attainable on an extension of the current design concept and the dome cooling by thermal emission is a key factor to overcome to minimize the dome-induced seeing degradation.
Ando Hiroki
Itoh Naoki
Mikami Izumi
Miyawaki Keizo
Noguchi Takaaki
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