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Keck Interferometer Beamline Characterizations

机译：凯克干涉仪光束线特性

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The Keck interferometer has its V~2 science mode open to its astronomical community and the Nuller science mode is maturing in its development. In order to push on and improve the limits of the instrument a program of analyzing the characteristics of its beamlines has begun. The purpose of this endeavor is to understand beamtrain characteristics for assessing and improving overall system performance. In this paper we present some of the initial results from measurements as well as preliminary analyses of polarization and wavefront quality. Polarization measurements were made on the internal beamtrains for two orthogonal telescope azimuth positions. The wavefront test is a static beamline measurement using a Shack-Hartmann sensor to sample the wavefront quality of the beamtrain. Also results from a dynamic beamtrain monitoring scheme is presented that involves measurements from the angle tracking system during on-sky operation.
机译：凯克干涉仪的V〜2科学模式向天文界开放，而纳勒科学模式的发展日趋成熟。为了提高和改善仪器的极限，已经开始了分析其束线特征的程序。这项工作的目的是了解用于评估和改善整体系统性能的束流特性。在本文中，我们介绍了一些测量的初步结果以及极化和波前质量的初步分析。在两个正交望远镜方位角的内部光束列上进行偏振测量。波前测试是使用Shack-Hartmann传感器的静态光束线测量，以采样光束列的波前质量。还提出了动态束流监控方案的结果，该方案涉及在空中运行期间来自角度跟踪系统的测量。

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