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Analysis of Calibration Errors for Both Short and Long Stroke White Light Experiments

机译:短行程和长行程白光实验的校准误差分析

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The SIM PlanetQuest mission can provide microarcsecond (μas) accuracy for exoplanet searches and critical astrophysical research. SIM is the only mission which can measure angular wobbles caused by planets for determination of planetary masses. In order to reach μas accuracy the SIM instrument must be able to measure fringe parameters to the accuracy of picometers. It is necessary to investigate calibration techniques and to carefully analyze influences from ghost images in white light fringe measurements. This work will analyze focusing and tilt variations introduced by thermal changes in calibration processes. In particular the accuracy limits are presented for common short- and long-stroke experiments. A new, simple, practical calibration scheme is proposed and analyzed based on the SIM PlanetQuest's Micro-Arcsecond Metrology (MAM) testbed experiments.
机译:SIM PlanetQuest任务可以为系外行星搜索和关键的天体物理学研究提供微秒(μas)的精度。 SIM是唯一可以测量由行星引起的角度摆动以确定行星质量的任务。为了达到μas的精度,SIM仪器必须能够测量边缘参数达到皮米级的精度。有必要研究校准技术,并仔细分析白光条纹测量中重影图像的影响。这项工作将分析由校准过程中的热变化引起的聚焦和倾斜变化。特别是针对常见的短行程和长行程实验提出了精度极限。根据SIM PlanetQuest的微弧秒计量学(MAM)试验台实验,提出并分析了一种新的,简单实用的校准方案。

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