COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2507

                                       Konkoly Observatory
                                       Budapest
                                       24 April 1984

                                       HU ISSN 0374-0676

         PHOTOELECTRIC OBSERVATIONS OF 1 Per AND BU Tau

 The two variable stars have been observed in the V-band with a 165/1430
Newtonian telescope. The phases of 1 Per were calculated with the elements
from Poretti (1982):

           Min I = JD 2443562.853 + 25.9359d x E       (1)
Distinct minimum could only be observed at phase 0.41.

1 Per

Delta V are in the sense 4 Per minus 1 Per

4 Per (5.007 V, B8V)

  Hel. J.D.	 Phase	   Delta V	Hel. J.D.      Phase	 Delta V
  2440000 +				2440000 +
  5638.275       0.026     -0.53        5671.217       0.291     -0.57:
  5645.279       0.290     -0.47        5673.304       0.368     -0.49
  5647.238       0.367     -0.50        5689.213       0.985     -0.42
  5648.229       0.405     -0.61        5691.221       0.062     -0.54
  5648.279       0.407     -0.63        5751.321       0.380     -0.58:
  5651.250       0.521     -0.48        5752.292       0.414     -0.71
  5652.238       0.560     -0.50        5759.300       0.688     -0.49
  5661.254       0.907     -0.56        5778.292       0.420     -0.67
  5663.203       0.983     -0.48        5779.283       0.459     -0.50:
  5663.233       0.984     -0.46        5780.279       0.497     -0.52

  The variable BU Tau was in maximum light during the observing time. There
were small amplitude variations present.

BU Tau
comparison star: 16 Tau (5.46 V, -0.04 (B-V))
check star: 19 Tau (5.65 V, -0.07 (B-V))
  Hel. J.D.               Hel. J.D.              Hel. J.D.
  2440000+        V       2440000+       V       2440000+        V
  5346.29       5.10      5645.27       5.20     5691.29        5.17
  5406.29       5.13      5647.27       5.22     5705.29        5.16:
  5407.30       5.13      5651.30       5.21     5744.25        5.17
  5430.31       5.13      5663.25       5.25     5751.29        5.24:
  5617.37       5.20      5683.26       5.13:    5759.29        5.23
  5621.32       5.25:     5684.28       5.15:    5778.31        5.15
  5638.25       5.11:     5689.26       5.22     5780.31        5.13



  D. BOHME
4851 Nessa 11 Pf.: 93
German Democratic Republic


Reference:
Poretti E., 1982, I.B.V.S. No. 2239