SAOLIM, Prototype of a Low-Cost System for Adaptive Optics with Lucky Imaging. Design and Performance

被引：4
|
作者：
Aceituno, J. [1 ]
Sanchez, S. F. [1 ]
Ortiz, J. L. [2 ]
Aceituno, F. J. [2 ]
机构：
[1] CAHA, Almeria 04004, Spain
[2] Inst Astrofis Andalucia CSIC, Granada, Spain
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2010年 / 122卷 / 894期
关键词：
NOISE PERFORMANCE; MIRROR;
D O I：
10.1086/655774
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A prototype of a low-cost adaptive optics (AO) system has been developed at the Instituto de Astrofisica de Andalucia (CSIC) and tested at the 2.2 m telescope of the Calar Alto Observatory. We present here the status of the project, which includes the image stabilization system and compensation of high-order wavefront aberrations with a membrane-deformable mirror. The image stabilization system consists of a magnet-driven tip-tilt mirror. The higher-order compensation system comprises a Shack-Hartmann sensor, a membrane-deformable mirror with 39 actuators, and the control computer, which allows operations up to 420 Hz in closed-loop mode. We have successfully closed the high-order AO loop on natural guide stars. An improvement of 4 times in terms of FWHM was achieved. The description and the results obtained on the sky are presented in this article.
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页码：924 / 934
页数：11
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