侧簧的自适应光学仿真
Adaptive Optics Simulations for Siding Spring
摘要：
利用观测导出的光学湍流廓线模型（model-OTP）研究了澳大利亚赛丁泉天文台（SSO）的自适应光学（AO）的性能。模拟了单共轭自适应光学（SCAO）、多共轭自适应光学（MCAO）和地面层自适应光学（GLAO）的自适应光学性能。本文给出的模拟结果预测了这些AO技术应用于澳大利亚国立大学（ANU）2.3 m和英澳望远镜（AAT）3.9 m望远镜的天文波段J，H和K的性能。结果表明，AO性能是最好的较长的波长（K波段），在最好的看到的条件（亚1角秒）。最有希望的结果被发现为GLAO模拟（180 arcsecs的视场），与场RMS的包围能量50%直径（EE 50 d）是均匀的，受自由大气湍流的影响最小。GLAO性能在J、H和K波段上相当好。EE 50 d的GLAO场平均值在200 mas到800 mas之间，与标称天文视宁度（870到1700 mas）相比，这是一个明显的改善。
英文摘要：
Using an observational derived model optical turbulence profile (model-OTP) we have investigated the performance of Adaptive Optics (AO) at Siding Spring Observatory (SSO), Australia. The simulations cover the performance for AO techniques of single conjugate adaptive optics (SCAO), multi-conjugate adaptive optics (MCAO) and ground-layer adaptive optics (GLAO). The simulation results presented in this paper predict the performance of these AO techniques as applied to the Australian National University (ANU) 2.3 m and Anglo-Australian Telescope (AAT) 3.9 m telescopes for astronomical wavelength bands J, H and K. The results indicate that AO performance is best for the longer wavelengths (K-band) and in the best seeing conditions (sub 1-arcsecond). The most promising results are found for GLAO simulations (field of view of 180 arcsecs), with the field RMS for encircled energy 50% diameter (EE50d) being uniform and minimally affected by the free-atmosphere turbulence. The GLAO performance is reasonably good over the wavelength bands of J, H and K. The GLAO field mean of EE50d is between 200 mas to 800 mas, which is a noticeable improvement compared to the nominal astronomical seeing (870 to 1700 mas).
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