COMMISSION 27 OF THE I. A. U.
            INFORMATION BULLETIN ON VARIABLE STARS
                         Number 967

                                       Konkoly Observatory
                                       Budapest
                                       1975 February 27


        NINE NEW VARIABLE STARS IN A FIELD AROUND mu Cep

For a variable star search in stellar associations a total of 21
blue plates centered on mu Cep have been obtained in 1961/62 with
the B-objective (Sonnefeld four lens system F/5; F=206 cm) of the
Bruce double camera of the Heidelberg-Konigstuhl Observatory by
one of the authors (E.H.G.). Each plate covers a field of about
6.6 x 8.3 square degrees. Two pairs of plates have been searched
for variable stars, resulting in the discovery of nine variables,
not designated in the GCVS (1969), GCVS 1. and 2. Suppl. (1971/1974)
and the CSV catalogs I and II. For the estimates of the range of
variability we used a sequence of B-magnitudes, derived by means
of photographic transfer of a photoelectric sequence in the nearby 
cluster NGC 7128 (Hoag, A.A. et al. 1961, Publ. US Naval Obs.
Vol. 17 part 7). This transfer has been done with the astrograph
of the Hoher List Observatory (same four lens system F/5; F=150 cm).
The preliminary results are given in the table. The accuracy of
the coordinates corresponds to the positional accuracy of the
Bonner Durchmusterung. The remarks in the last column refer to
the estimated colours on the POSS-charts, where "r" means, that
the star is brighter on the red print, "b", that the star is brighter 
on the blue print and "r=b", that the star has roughly the same
brightness on both prints. The identification charts, which are 
enlargements from two original plates, have north up and east to
the left.

Details will be published elsewhere.

 No.   RA_1900        D_1900      Max      Min     colour
  1   21h23m38s    +61deg56.7'    16m.5    17m.2     r=b
  2      24 40      55   34.7     16.1    (17.6      r=b
  3      30 56      55   07.9     15.0     15.8       r
  4      31 37      55   28.8     15.5     16.1       r
  5      35 16      61   00.1     13.8     14.6      r=b
  6      47 03      57   09.6     16.3     17.2       r
  7      54 52      59   52.7     11.3     11.9       b
  8      59 21      61   27       16.6     17.1      r=b
  9   22 06 53      61   17       16.6     17.4       r


                       [FIGURE 1]



                                       E. H. GEYER
                                       F. GIESEKING
                                Astronomische Institute der
                                Universitat Bonn
                                Observatorium Hoher List