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Accession number;99A0938787
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| Title;Silver Coating of the 1.3 m Infrared Secondary Mirror of Subaru. |
| Author;
KANZAWA TOMIO
(Natl. Astron. Obs.)
SASAKI GORO
(Natl. Astron. Obs.)
YUTANI MASAMI
(Natl. Astron. Obs.)
TORII YASUO
(Natl. Astron. Obs.)
OSHIMA NORIO
(Natl. Astron. Obs.)
KAMATA YUKIO
(Natl. Astron. Obs.)
HAYASHI SAEKO
(Natl. Astron. Obs.)
NAKAGIRI MASAO
(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.139-144(1999)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;We report the silver coating of 1266 mm secondary mirror to be used for infrared observations at Subaru Telescope. This was the first successful in-house run of silver coating on the large modern astronomical mirror. Silver was deposited over the chromium bondage layer, using a 1.6-m vacuum coating chamber at the Advanced Technology Center of the National Astronomical Observatory of Japan. The witness mirrors coated at the same time with this mirror show the characteristics as follows: 1) Total thickness of the chromium plus silver film is 1300.+-.100.ANGS.. 2) Reflectivity is 98.+-.1% over the wide range of visible wavelength to the near infrared wavelength. (author abst.) |
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