Low-cost solar adaptive optics in the infrared

被引：33
|
作者：
Keller, CU [1 ]
Plymate, C [1 ]
Ammons, SM [1 ]
机构：
[1] Natl Solar Observ, Tucson, AZ 85719 USA
来源：
INNOVATIVE TELESCOPES AND INSTRUMENTATION FOR SOLAR ASTROPHYSICS | 2003年 / 4853卷
关键词：
adaptive optics; infrared; Sun;
D O I：
10.1117/12.460370
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We have developed a low-cost adaptive optics system for solar observations in the infrared between I and 28 pm with the 1.5-m McMath-Pierce solar telescope. The 37-actuator membrane mirror and a fast tip-tilt mirror are controlled by a PC running Linux RedHat 7.1 that analyzes images from a 256 by 256 pixel, I kHz frame rate CCD camera. The total hardware cost is less than $25,000, and the system provides diffraction-limited performance under median seeing conditions above 2.3 pm. The single Pentium III processor provides enough computing power to analyze the 200 subapertures of the Shack-Hartmann wavefront sensor in real time. We describe the hardware and software implementations and show results from the first tests at the telescope.
引用
收藏
页码：351 / 359
页数：9
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