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Accession number;99A0938785
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| Title;Aluminum Coating Experiments by Using Pre-Wetting Method. |
| Author;
SASAKI GORO
(Natl. Astron. Obs.)
KANZAWA TOMIO
(Natl. Astron. Obs.)
OSHIMA NORIO
(Natl. Astron. Obs.)
TORII YASUO
(Natl. Astron. Obs.)
YUTANI MASAMI
(Natl. Astron. Obs.)
KAMATA YUKIKO
(Natl. Astron. Obs.)
HAYASHI SAEKO
(Natl. Astron. Obs.)
NOGUCHI TAKESHI
(Natl. Astron. Obs.)
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Journal Title;Report of the National Astronomical Observatory of Japan
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Journal Code:F0086B
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ISSN:0915-6321
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VOL.4;NO.3;PAGE.121-128(1999)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;In order to have sufficient aluminum onto the filaments to be used for the coating of large astronomical mirrors, we have conducted experiments of pre-wetting the filaments. Two vacuum chambers for evaporation coating (1.6-m and 38-cm in diameter, respectively) were used at the Advanced Technology Center (ATC) of the National Astronomical Observatory of Japan. Successful operation of the first aluminization of the 8.3 m primary mirror of Subaru proved the feasibility of using the pre-wetted filaments. The sample mirrors coated at the same time as the 8.3 m mirror in November 1998 show reflectivity as good as 90% at 500 nm measured by a spectrophotometer. (author abst.) |
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