We present 18,365 astrometric observations of 290 visual binaries obtained with the 26‐inch refractor of Pulkovo Observatory during 2014–2019. The separation between components is from 1″.3 to 37″ with a median value of 4″.8. For a single observation, the mean separation error is 0″.013, and the mean position angle error is 0^∘.44/ρ, where ρ is an angular distance in arcseconds. We compare the observations of sample stars with the data from the Gaia DR2 catalog and the results of the ground‐based observations performed with other telescopes.

中文翻译：

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2014-2019年期间，在普尔科沃天文台使用26英寸折射仪对视觉二进制进行了占星测量

我们展示了2014-2019年间使用普尔科沃天文台的26英寸折射仪获得的290个视觉二进制数据的18365个天体观测结果。组件之间的间隔为1“ .3到37”，中值为4“ .8。对于单一的观察，平均分离误差是0“0.013，平均位置角度误差是0 ^∘ 0.44 / ρ，其中ρ是在弧秒的角度距离。我们将样本恒星的观测结果与Gaia DR2目录的数据以及其他望远镜进行的地面观测结果进行了比较。