CFHT Adaptive Optics: First results at the telescope

被引：13

作者：

Lai, O

Veran, JP

Rigaut, F

Rouan, D

Gigan, P

Lacombe, F

Lena, P

Arsenault, R

Salmon, D

Thomas, J

Crampton, D

Fletcher, JM

Stilburn, J

Boyer, C

Jagourel, P

机构：

来源：

OPTICAL TELESCOPES OF TODAY AND TOMORROW: FOLLOWING IN THE DIRECTION OF TYCHO BRAHE | 1997年 / 2871卷

关键词：

adaptive optics; astronomical imaging; curvature; high angular resolution;

D O I：

10.1117/12.269121

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The Adaptive Optics Instrument Adaptor for the 3.6 m Canada-France-Hawaii Telescope (CFHT) is currently in commissioning phase. The heart of the system is a 19 electrode bimorph mirror (1:6:12), used with a 19 sub-aperture, curvature wave-front sensor and a separate tip-tilt re-imaging mirror. The performance evaluated in the laboratory and on the sky are presented : the adaptive optics control system provides a 100 Hz servo bandwidth with modal control capabilities. We report astronomical images with median Strehl ratio of 20 (@ 1.25 mu m) to 60 % (@ 2.2 mu m), with a FWHM of 0.1 arcsec and a sensitivity allowing image quality improvement with guide stars as faint as m(R) = 17.

引用

页码：859 / 870

页数：4