COMMISSION 27 OF THE I.A.U.
              INFORMATION BULLETIN ON VARIABLE STARS
                           Number 1289

                                                    Konkoly Observatory
                                                    Budapest
                                                    1977 June 6


   OBSERVATIONS OF ECLIPSING BINARIES AT THE NEW NATIONAL
       OBSERVATORY OF ATHENS, KRYONERION, GREECE

The 48 inch Cassegrain reflector of the above named observatory 
(G. Contopoulos and C. Banos, Sky and Telescope, 1976, 51,
154) was recently used together with a two beam multi-mode photometer
(C. Goudis and J. Meaburn, Astrophys. and Space Sci., 1973, 20,
149) in a program of four colour observations of eclipsing
binaries. Work was started during a three-week period in March-
April of this this year.
   The four intermediate pass-band filters used were selected
to be in close accordance with the standard colour system.
Automatized procedures have been developed to carry out reductions 
along the lines described by Hardie ("Astronomical Techniques", 
University of Chicago Press, Chicago and London, 1962,
178) and calibrations have been made on the basis of observations 
of standard stars given in the catalog of Iriarte et al.
(Sky and Telescope, 1965, 30, 21).
   Times of minima have been deduced by essentially visual
inspection of adequately covered regions of the light curves.

    The following preliminary data are presented

Star     HJD (min)  Type of     Magnitude and Colours     Phase
         2440000.+    Min.     V     B-V   U-B   V-R      Region

SV Cam    3222.384     s      8.40  0.72  0.48  0.63     (mean out-
                                                         of-eclipse
                                                         value)
WW Dra    3221.544     s      8.71   --    --    --      (at secondary
                                                         minimum)
AH Vir    3224.555     p      8.89  0.78  0.57  0.91        0.75
DM Per*   3224.314     p      8.59 -0.05 -0.09  -0.04    (at primary
                                                           minimum)

   The program is continuing and it is hoped that further 
results will be announced in due course.


                     E. BUDDING
                     A.R. SADIK
                     P. NIARCHOS
                     D.H. JASSUR


* A secondary minimum of this star was observed photoelectrically
  at the Royal Greenwich Observatory, Herstmonceux, Sussex, England
  using the 36 inch Yapp reflector. The time of minimum was HJD
  2443105.657.