标题： 美国海军精密光学干涉仪的 simultaneous 六路观测 显示英文标题

标题： Simultaneous Six-way Observations from the Navy Precision Optical Interferometer

摘要： 我们首次使用美国海军精密光学干涉仪（NPOI）的6元件观测模式测量了六颗恒星的角直径，这是自2000年初以来的首次。 四个直径范围从1.2毫弧秒到1.9毫弧秒，而另外两个则小得多，大约在0.5毫弧秒到0.7毫弧秒之间，这些是迄今为止用NPOI测量到的最小的角直径。 测量值的分布比使用3元件、4元件或5元件模式获得的数据更大，这可以部分归因于超过2个测光计在单一光谱仪中的组合导致的通量不平衡，以及与快速延迟线抖动非线性相关的多基线之间的串扰。 我们计划将来通过使用VISION光束合成器来解决这个问题。 显示英文摘要

摘要： We measured the angular diameters of six stars using the 6-element observing mode of the Navy Precision Optical Interferometer (NPOI) for the first time since the early 2000s. Four of the diameters ranged from 1.2 mas to 1.9 mas, while the two others were much smaller at approximately 0.5 mas to 0.7 mas, which are the two smallest angular diameters measured to date with the NPOI. There is a larger spread in the measurements than data obtained with 3- or 4- or 5-element modes, which can be attributed in part to the flux imbalance due to the combination of more than 2 siderostats in a single spectrograph, and also to cross talk between multiple baselines related to non-linearities in the fast delay line dither strokes. We plan to address this in the future by using the VISION beam combiner.