COMMISSION 27 OF THE I. A. U.
       INFORMATION BULLETIN ON VARIABLE STARS
                   Number 1751

                               Konkoly Observatory
                               Budapest
                               1980 February 27


          PHOTOELECTRIC MINIMA OF ECLIPSING VARIABLES


The photoelectric minima of eclipsing binaries listed below, with one
exception, were all observed with the 60 cm reflector of the Konkoly
Observatory. The observations were done with an unrefrigerated EMI 9502B type
photomultiplier combined with 2mm UG1; 1mm BG12+ 2mm GG13, and 2mm GG11
filters.

Linear elements given in the First (I), Second (II) and Third (III) Supplements
to the 1969 General Catalogue of Variable Stars were used for computing the O-C
values. N denotes the number of individual observations each consisting of six
measurements.

Star     J.D. hel       O-C_I  O-C_II  O-C_III  Colour  N    Remark
U Peg    2442291.543                   -.003     BV    24
         2444185.3093                  -.0070    BV    18
VV UMa   2442811.4871                  -.0011    UBV   51   1m RCC
         2443198.4800                  +.0019    BV    34
         2444014.3973                  +.0100    BV    32
SZ Her   2442956.4657  -.0037                    BV    52
RT And   2443044.3992                  -.0143    BV    48
SW Lyn   2443966.372                   -.009     BV    32
         2443975.3907                  -.0070    BV    56
AI Dra   2443966.5571          -.0054            BV    74
RW CrB   2444010.410           -.002             BV    42
V836 Cyg 2444129.5100  +.0071                    BV    48


L. PATKOS
Konkoly Observatory
Budapest