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Astrometric observations of visual binaries using 26‐inch refractor at Pulkovo Observatory during 2014–2019
Author(s) -
Izmailov Igor,
Rublevsky Aleksey,
Apetyan Arina
Publication year - 2020
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.202013815
Subject(s) - refracting telescope , observatory , physics , stars , position angle , astronomy , astrophysics , galaxy
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.