ISAAC: A 1-5 mu m imager/spectrometer for the VLT

被引:40
作者
Moorwood, AFM
机构
来源
OPTICAL TELESCOPES OF TODAY AND TOMORROW: FOLLOWING IN THE DIRECTION OF TYCHO BRAHE | 1997年 / 2871卷
关键词
astronomical instrumentation; infrared; imaging; spectroscopy;
D O I
10.1117/12.269002
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
ISAAC is a 1.5 mu m imager/spectrometer currently under construction at ESO and scheduled for installation at one of the Nasmyth foci of the first 8m unit telescopes of the VLT in 1998. It comprises two cameras, optimized for the 1-2.5 mu m and 2-5 mu m wavelength ranges, which can be used to directly view the telescope focal plane or the intermediate spectrum formed by a grating spectrometer. The complete instrument is cryogenically cooled by means of a continuous now liquid nitrogen circuit and two closed cycle coolers and is housed in a - 1.5m diameter vacuum tank permanently attached to the Nasmyth adapter/rotator. The observing modes, instrument design, construction status and performance estimated using a recently developed software simulator of the instrument are described.
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页码:1146 / 1151
页数:2
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