Premium
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
Abstract 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.