Palomar adaptive optics project: status and performance
Palomar adaptive optics project: status and performance
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Palomar 自适应光学项目：现状和绩效
作者：
M. Troy;R. Dekany;Gary L. Brack;B. Oppenheimer;E. Bloemhof;T. Trinh;F. Dekens;F. Shi;T. Hayward;B. Brandl
我们描述了Palomar 200英寸（5米）的自适应光学系统，在1998年12月实现了其第一个高阶（241个致动器）锁定在自然引导星星的当前性能。在K波段（2.2微米），该系统已达到斯特列尔比高达50%的存在下，1.0角秒的视宁度（0.5微米）。基于实时波前传感器遥测数据的分析和基于拟合的Kolmogorov大气模型的分析的系统性能的预测都与所观察到的科学图像性能一致。性能预测的各种看到的条件和分析的误差预算是用来显示哪些子系统限制的AO系统在各种大气条件下的性能。
We describe the current performance of the Palomar 200 inch (5 m) adaptive optics system, which in December of 1998 achieved its first high order (241 actuators) lock on a natural guide star. In the K band (2.2 micrometer), the system has achieved Strehl ratios as high as 50% in the presence of 1.0 arcsecond seeing (0.5 micrometer). Predictions of the system's performance based on the analysis of real-time wavefront sensor telemetry data and an analysis based on a fitted Kolmogorov atmospheric model are shown to both agree with the observed science image performance. Performance predictions for various seeing conditions are presented and an analysis of the error budget is used to show which subsystems limit the performance of the AO system under various atmospheric conditions.