COMMISSION 27 OF THE I.A.U.
               INFORMATION BULLETIN ON VARIABLE STARS
                            Number 1463

                                                      Konkoly Observatory
                                                      Budapest
                                                      1978 August 22


           NOTE ON V1329 CYGNI = HBV 475

This emission line variable star was found by Kohouthek
(1969) and its lightcurve was investigated by Stienon et al.
(1974). They found a periodicity of about 960 days together
with some irregular fluctuations.
   We took yellow plates (103a-D+GG495) with the 31.4 cm
f/16 refractor of the Wilhelm Foerster Observatory, Berlin and
blue plates (Orwo ZU 2) with the 30 cm f/5 fourlens astrograph
of the Observatorium Hoher List of the University of Bonn. The
magnitudes of the star on these plates, listed in Table 1, were
obtained by measuring the plates with an iris photometer. The
magnitudes of the comparison stars, given in Table 2, are based
on photoelectrical measurements kindly communicated by Dr. 
Kohouthek.
   From our yellow observations, we found fluctuations of
about 1m.5 in V within a few hundred days. But also, short time
lightcurve activity occur as is shown by the last four blue
plates taken within a time interval of 10 days and showing an
amplitude of about 0m.5 in B.
   We acknowledge the support by the Hoher List Observatory
for carrying out the observations and the use of measuring 
instruments and we thank Dr. Kohouthek, Hamburg for communicating
his photoelectric measurements.


                   S. WITZIGMANN, M. KIEHL, U. HOPP

                     Wilhelm Foerster Sternwarte,
                              Berlin



References:

Kohouthek, L., 1969, I.B.V.S. No. 384
Stienon, F.M., Chartraud, M.R., Shao, C.Y., 1979, Astron. J. 79, 47 [BIBCODE 1974AJ.....79...47S ]



                Table 1

             Observations

Spectral  Date (J.D.geo.)     Mag.       N
Range

V          2443010.504d     13m17+-0.05m 6
              3372.401      12.55        6
              3525.230      11.7+-0.1    5
              3579.624      12.5         5
              3677.421      12.94+-0.05  4
B             2881.637      14.0+-0.1    5
              3374.527      12.96+-0.05  7
              3713.482      14.27        6
              3718.449      14.04        6
              3719.435      13.76        7
              3723.517      14.19        5

N: Number of used comparison stars


                    Table 2

   Adopted magnitudes of the comparison stars
    (designation according to Kohouthek 1969)

Star     V         B-V        Star       V         B-V

a      10.16m     +1.07m        f      13.59m     +0.82m
b      10.34       1.07         g      13.46       1.02
c      11.06       1.22         7      12.90       0.80
d      11.61       1.39        42      13.62       0.49