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Experiment of WFCT-II (Wide Field Cryogenic Telescope II) at Sutherland, South Africa

Published online by Cambridge University Press:  13 November 2008

H. Zinnecker ,
N. Epchtein ,
H. Rauer ,
K. Haraguchi ,
S. Sato ,
M. Kurita ,
G. Weilai ,
T. Nagata  and
T. Nagayama
K. Haraguchi*
Affiliation:
Dept. of Astrophysics, Nagoya University, 464-8602, Japan
S. Sato
Affiliation:
Dept. of Astrophysics, Nagoya University, 464-8602, Japan
M. Kurita
Affiliation:
Dept. of Astrophysics, Nagoya University, 464-8602, Japan
G. Weilai
Affiliation:
Dept. of Astrophysics, Nagoya University, 464-8602, Japan
T. Nagata
Affiliation:
Dept. of Astronomy, Kyoto University, 606-8502, Japan
T. Nagayama
Affiliation:
Dept. of Astronomy, Kyoto University, 606-8502, Japan
*
[email protected] ; [email protected] ; [email protected] ; [email protected] ; [email protected] ; [email protected]
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Abstract

We have developed a Wide Field Cryogenic Telescope II (WFCT-II), which containsa whole telescope-optics in a cryostat to suppress thermal emission from the whole telescope.The cryostat is of a cylindrical shape of 800 mm length and 300 mm diameter.The telescope inside is a Ritchey-Chretien system with the primary mirror of 231 mm in diameterand a focal length of 1500 mm.
The InSb 1k × 1k infrared array detector (Aladdin II) has a FoV of 1 square degreeand a resolution of 3'' × 3''/pixel.
We can install 5 filters whose wavelengths range from 1 μm to 5 μm.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 33: 2nd ARENA Conference: The Astrophysical Science Cases at Dome C , 2008 , pp. 257 - 260
Copyright
© EAS, EDP Sciences, 2008

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References

Ando, M., et al., 2002, ApJ, 574, 187 CrossRef
Ando, M., et al., 2002, Exper. Astron., 13, 119 CrossRef