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arXiv 1611.01596astro-ph.IMastro-ph.EPastro-ph.SR
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一种用于小型望远镜的高精度旋光仪

A high precision polarimeter for small telescopes

Jeremy Bailey, Daniel V. Cotton, Lucyna Kedziora-Chudczer

摘要:

我们描述了Mini-HIPPI(Miniature HighPrecision Polarimetric Instrument),一个重量仅为650克的恒星偏振仪,但能够测量线性偏振到$\sim10^{-5}$。Mini-HIPPI基于铁电液晶(FLC)调制器的使用。它可以很容易地安装在一个小型望远镜上,并允许研究明亮恒星的偏振,其精度迄今为止基本上未被探索过。我们目前获得的结果与迷你HIPPI的35厘米望远镜。偏振标准星的测量值与预测值符合得很好。一些明亮恒星的测量结果与其他高灵敏度偏振计的测量结果一致。对角宿一双星系统的观测显示出围绕轨道周期的偏振变化。

英文摘要:

We describe Mini-HIPPI (Miniature HIgh Precision Polarimetric Instrument), a stellar polarimeter weighing just 650 grams but capable of measuring linear polarization to $\sim10^{-5}$. Mini-HIPPI is based on the use of a Ferroelectric Liquid Crystal (FLC) modulator. It can easily be mounted on a small telescope and allows study of the polarization of bright stars at levels of precision which are hitherto largely unexplored. We present results obtained with Mini-HIPPI on a 35 cm telescope. Measurements of polarized standard stars are in good agreement with predicted values. Meaurements of a number of bright stars agree well with those from other high-sensitivity polarimeters. Observations of the binary system Spica show polarization variability around the orbital cycle.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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