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

页码：211 / 216

页数：6