Temperature control for the primary mirror of Subaru Telescope using the data from "Forecast for Mauna Kea observatories"

Details Temperature control for the primary mirror of Subaru Telescope using the data from "Forecast for Mauna Kea observatories" Temperature control for the primary mirror of Subaru Telescope using the data from "Forecast for Mauna Kea observatories"

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pnaoj...7...25m&link_type=abstract

Publications of the National Astronomical Observatory of Japan (ISSN 0915-3640), Vol. 7, No. 2, p. 25 - 31 (2003)

Mathematics

Probability

1

Subaru Telescope, Weather Forecast, Seeing, Primary Mirror, Temperature Control

Scientific paper

Based on the successful numerical weather forecasting by collaboration between the Mauna Kea Weather Center and Subaru Telescope, we developed a temperature control system for the primary mirror of the Subaru Telescope. Temperature forecast is accurate 80% in 2 degrees. After the start of operation, the temperature of the primary mirror controlled below 1 degree centigrade compared by the ambient night air temperature in over 70% probability. The effect of the temperature control for the improvement of the seeing of Subaru Telescope seems to be moderately effective. The median of the seeing size of Subaru Telescope on May 2000 to March 2003 is 0.655 arcsec FWHM. We need further investigation as to whether the improvement is the result of our successful temperature control system of the primary mirror or the effect of the annual variation of seeing itself. Thus, we need a longer period of data for verification of the effectiveness of the temperature control.

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