Astron. Astrophys. Suppl. Ser. 136, 525-529

CCD astrometry and instrumental $\Delta V$ photometry of visual double stars

V. Differential measurements of pairs with angular separations 1$\hbox{$^{\prime\prime}$}$ to 4$\hbox{$^{\prime\prime}$}$

D. Sinachopoulos^1,2 - A. Dapergolas² - E. van Dessel¹ - E. Kontizas²

Send offprint request: D. Sinachopoulos

1 - Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussel, Belgium
2 - National Observatory of Athens, Lophos Nymphon, GR-11810, Greece

Received September 28, 1998; accepted February 16, 1999

Abstract:

We present angular separations, position angles and $\Delta V$instrumental magnitude differences of 83 visual double stars with angular separations around two arcseconds. Our observations were made by means of a CCD detector attached to the Kryonerion 1.2 m telescope. 12 of them are common proper motion stars and their components should therefore be stars of common origin.

Key words: stars: binaries: visual -- astrometry