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CCD Measurements of Double and Multiple Stars at NAO Rozhen. IV

Author(s): Cvetkovic, Z. | Pavlovic, R. | Boeva, S.

Journal: Serbian Astronomical Journal
ISSN 1450-698X

Volume: 180;
Start page: 103;
Date: 2010;
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Keywords: Binaries: visual

Using the 2 m telescope of the Bulgarian National Astronomical Observatory at Rozhen observations of 30 double or multiple stars were carried out during two half nights on July 20and 21, 2009. This is the fourth series of measurements of CCD frames of double and multiple stars obtained at Rozhen. In this paper we present the results for the position angle and separation for 23 double and 5 multiple stars (35 pairs) which could have been measured.
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