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A thousand and one nights of seeing on Mt. Wilson

机译:一千零一夜在山上观光威尔逊

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Abstract: The Mark III optical interferometer has been in routine operation on Mt. Wilson, near Los Angeles CA, since 1988. Because it employs active fringe-tracking, seeing measurements are a natural byproduct of any astronomical observation. An automated seeing analysis program has allowed us to extract measurements of the coherence time, t$- approximately icron$/, and the high-frequency spectral index of the power spectrum of fringe motion for all clear nights in the observing seasons 1989-1991. This provides a unique database of the seeing; very few other measurements of the temporal properties of astronomical seeing exist, and none with such a representative sampling of nights. We examine various statistical properties of the seeing and infer quantities of interest to the design of future interferometers. !8
机译:摘要:Mark III光学干涉仪已在Mt上进行常规操作。自1988年以来,位于加利福尼亚州洛杉矶附近的威尔逊(Wilson)。由于它采用主动条纹跟踪,因此观测数据是任何天文观测的自然副产品。自动化的观看分析程序使我们能够提取相干时间t $-近似icron $ /的测量值,以及在1989-1991年观测季节所有晴朗夜晚的边缘运动功率谱的高频频谱指数。这提供了唯一的视线数据库;很少有其他关于天文观测的时间特性的测量,并且没有这样具有代表性的夜晚采样。我们检查了可见光的各种统计特性,并推断出未来干涉仪设计所需的数量。 !8

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