Tip-tilt and chopping mechanism for the Subaru telescope IR secondary mirror unit

被引：10

作者：

Itoh, N ^{[1
]}

Horiuchi, Y ^{[1
]}

Asari, K ^{[1
]}

Hayashi, M ^{[1
]}

机构：

[1] Mitsubishi Elect Corp, Amagasaki, Hyogo 661, Japan

来源：

ADVANCED TECHNOLOGY OPTICAL/IR TELESCOPES VI | 1998年 / 3352卷

关键词：

chopping secondary; tip-tilt; tracking;

D O I：

10.1117/12.319310

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Subaru Telescope introduces a tip-tilt and chopping mechanism for an IR secondary mirror, which is of ULE light weight type, 1.3m in diameter and 180kg in weight. Performance targets of the tip-tilt and chopping mechanism are 30Hz control band width with 0.01" resolution for tip-tilt and 30" amplitude with frequency of 5Hz for chopping. To archive these targets, a system combining 6-point dynamic drive mechanism and 15-point passive support mechanism against for gravity are developed and compact actuators of electric magnet type for the drive mechanism are employed. Test with a dummy minor shows that the performance target are achieved. This paper describes the design and test results of the tip-tilt and chopping mechanism.

引用

页码：850 / 857

页数：8