Near-infrared spectrograph for the Hale 5-meter telescope

被引：15
|
作者：
Larkin, JE
Knop, RA
Lin, S
Matthews, K
Soifer, BT
机构：
[1] Palomar Observatory, California Institute of Technology, Caltech 320-47, Pasadena
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 1996年 / 108卷 / 720期
关键词：
D O I：
10.1086/133711
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the design, construction, and performance of a near-infrared spectrograph for the 5-m Hale telescope at Palomar Observatory. The instrument is designed to operate between 1 and 5 mu m using existing infrared-array cameras. The spectrograph has two long-slit spectroscopy modes yielding resolutions (lambda/Delta lambda) of similar to 850 and similar to 3300 with a 0:'' 75 wide by 40 '' long slit. The spectrograph also has a direct-imaging mode in which a mirror is moved in front of the gratings giving a 10 '' x40 '' field of view through the same optical path. All mirror surfaces are cryogenically cooled to liquid-nitrogen temperatures to reduce thermal emission after dispersion. The instrument has performed to specifications and a representative set of data is presented.
引用
收藏
页码：211 / 216
页数：6
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