Design of the Gemini near-infrared spectrometer

被引：30

作者：

Elias, JH ^{[1
]}

Vukobratovich, D ^{[1
]}

Andrew, JR ^{[1
]}

Cho, MK ^{[1
]}

Cuberly, RW ^{[1
]}

Don, K ^{[1
]}

Gerzoff, A ^{[1
]}

Harmer, CF ^{[1
]}

Harris, D ^{[1
]}

Heynssens, JB ^{[1
]}

Hicks, J ^{[1
]}

Kovacs, A ^{[1
]}

Li, CC ^{[1
]}

Liang, M ^{[1
]}

Moon, IK ^{[1
]}

Pearson, ET ^{[1
]}

Plum, G ^{[1
]}

Roddier, NA ^{[1
]}

Tvedt, J ^{[1
]}

Wolff, RJ ^{[1
]}

Wong, WY ^{[1
]}

机构：

[1] Natl Opt Astron Observ, Tucson, AZ 85726 USA

来源：

INFRARED ASTRONOMICAL INSTRUMENTATION, PTS 1-2 | 1998年 / 3354卷

关键词：

infrared spectrometer; large telescope;

D O I：

10.1117/12.317281

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The design of a near-infrared spectrometer for the Gemini 8-m telescopes is described. This instrument, GNIRS, provides coverage from 0.9 to 5.5 mu m at several spectral resolutions and two pixel scales. Capabilities include an imaging mode intended primarily for acquisition, a cross-dispersed mode covering wavelengths from 0.9 to 2.5 mu m, and provisions for an integral field unit. The design of the GNIRS is conservative, as it must meet tight schedule and resource constraints; it nonetheless provides high throughput and operational efficiency, minimal flexure, and the flexibility needed to support queue observing. The optics are a combination of diamond-turned metal optics for the fore-optics and collimator, and refractive optics for the cameras. The mechanisms include a two-axis grating turret and a cross-dispersion turret; all mechanisms are positioned by means of internal detents. The instrument achieves low flexure within its weight budget by the use of a modular structure composed of cylindrical light-weighted sections into which individual mechanisms and optics modules are mounted. Extensive analyses of mechanical and optical performance have been performed. The GNIRS has passed its Critical Design Review, and fabrication is now underway.

引用

页码：555 / 565

页数：11