Gemini near-infrared imager on-instrument wavefront sensor gimbal tilt stage

被引：4

作者：

Thornton, RJ ^{[1
]}

Douglass, J ^{[1
]}

Hodapp, K ^{[1
]}

Young, T ^{[1
]}

Yamada, H ^{[1
]}

机构：

[1] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

来源：

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

关键词：

gimbal mirror tip-tilt wavefront sensor steering resolution;

D O I：

10.1117/12.317232

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a high-resolution gimbal mirror mechanism which will perform the beam steering for the on-instrument wavefront sensor section of the Gemini near-infrared imager (NIRI). In turn, the wavefront sensor will generate correction signals for the tip-tilt and fast-focus secondary mirror. Preliminary testing of the current version of the gimbal assembly has revealed positive results when operated at room temperature, but demonstrated hysterisis problems at cryogenic temperatures (77 K). Described in this paper are the specifications, design and performance characteristics, and integration of the gimbal mechanism with the rest of the wavefront sensor system.

引用

页码：1077 / 1083

页数：7