Supernova 1994D - NAS.VSS Report No. 4

          Norwegian Astronomical Society - Variable Star Section

OBSERVATIONS OF SUPERNOVA 1994D IN NGC 4526 - REPORT NO. 004 (1994 April 8)
===========================================================================

YYYY MM DD.DDD  OBSERVATIONS          MAG  CL CD INSTRUM.   OBSERVER
1994 03 09.875  9-8:                 13.3: 3  I  M316,260x  Midtskogen, O.
1994 03 09.901  5-3;4+1              13.4  2  I  M406,208x  Granslo, B. H.
  (Observed from Saturn Paul Observatory, Sollihoegda, Norway)
1994 03 09.932  9-8;5+1              13.3  2  I  C203,200x  Dahle, H.
1994 03 10.885  9-2:5+3              12.9  2  I  M316,260x  Midtskogen, O.
1994 03 10.941  9-8;5=V              13.4: 3  I  C203,133x #Dahle, H.
1994 03 11.937  9-3                  12.8  2  I  M152,196x  Lauvstad, A.
1994 03 12.91   9(3)V(5)5            12.8  2  I  C203       Foss, S.
  (Observed from Oslo Solar Observatory, Harestua, Norway)
1994 03 12.91   (KM sequence)        13.0        C203       Larsen, T.
  (Observed from Oslo Solar Observatory, Harestua, Norway)
1994 03 13.990  6-7;7-1;9+4          12.1  2  I  C203,222x  Granslo, B. H.
1994 03 15.000  6-7;7=V              12.0  1  I  M316,260x  Midtskogen, O.
1994 03 15.082  6-7;7=V;9+5          12.0  2  I  C203,222x  Granslo, B. H.
1994 03 17.033  6-7;7-1;9+5          12.0  1  I  C203,222x  Granslo, B. H.
1994 03 17.856  6-3;7+2              11.7  1  I  M316,260x  Midtskogen, O.
1994 03 18.023  6-6;7+1;9+6          11.9  2  I  C203,222x  Granslo, B. H.
1994 03 19.015  6-4;7+2              11.8  2  I  C203,222x *Granslo, B. H.
1994 03 21.889  6-2;7+3;9+8          11.6  1  I  C203,200x *Dahle, H.
1994 03 22.013  6-5;7+2;9+7          11.8  2  I  C203,222x *Granslo, B. H.
1994 03 24.896  6-5;7=V;9+8          11.8  1  I  C203,200x *Dahle, H.
1994 03 24.914  6-4;7+2              11.7  2  I  M316,260x *Midtskogen, O.
1994 03 25.007  6-4;7+2;9+7          11.8  2  I  C203,222x *Granslo, B. H.
1994 03 27.032  6-4;7+2              11.8  2  I  C203,222x *Granslo, B. H.
1994 03 27.069  6-6;7=V              11.9  2  I  C203,200x *Dahle, H.
1994 03 28.014  6-6;7=V              11.9  2  I  C203,200x *Dahle, H.
1994 03 30.049  6-5;7-1;9+7          11.9  1  I  C203,200x *Dahle, H.
1994 03 30.892  7-1;9+5              12.1  2  I  M152,135x *Granslo, B. H.
  (Observed from Malm, Norway)
1994 04 03.826  7-3;9+5              12.2  2  I  C203,200x *Dahle, H.
1994 04 03.887  7-4;9+1              12.4  1  I  M316,260x *Midtskogen, O.
1994 04 03.897  7-2;9+4              12.2  1  I  M203,135x *Granslo, B. H.
  (Observed from Malm, Norway)
1994 04 03.899  7(3)V(2)9            12.3  1  I  M203,135x *Andersen, O. I.
  (Observed from Malm, Norway)
1994 04 03.941  6(5)V(2)7            11.8  2  I  M152,196x *Lauvstad, A.
1994 04 05.885  7-7;9=V;5+5          12.7  1  I  C203,200x *Dahle, H.
1994 04 06.859  7-4;9+2              12.4  1  I  M152,270x *Granslo, B. H.
  (Observed from Levanger, Norway)
1994 04 06.864  7(3)V(2)9            12.3  1  I  M152,196x *Lauvstad, A.
1994 04 07.833  7-6;9+1;5+6          12.6  1  I  C203,200x *Dahle, H.
1994 04 07.855  7-4;9+2              12.4  1  I  M316,260x *Midtskogen, O.
1994 04 08.010  7-5;9+1              12.5  2  I  C203,222x *Granslo, B. H.

Time system is Universal Time. Magnitudes are calculated from Pogson's step
method or the fractional method. CL = class: estimated accuracy of observa-
tion; 1 = good (+/- 0.1 mag.), 2 = fair (+/- 0.2 mag.), 3 = poor (+/- 0.3
mag.). CD = code: I = in-focus observation, O = out-of-focus observation.
Instrument (type, aperture in mm and magnification): C = catadioptric tele-
scope (SCT); M = Newtonian reflector. New and revised observations since
Report No. 3 (1994 March 18) are identified with the the symbols '*' and
'#', respectively.

Comparison stars (identifications and V-magnitudes): 6 = 11.277; 7 = 11.98;
9 = 12.54; 5 = 13.31; 4 = 13.32. The identifications are from Hanes, Harris
and Madore (MNRAS, 177. 653, 1976) and the magnitudes are due to Kilkenny
and Malcolm (MNRAS, 209, 169, 1984).

Observers: Odd Ivar Andersen (Oslo, Norway); Haakon Dahle (Oslo, Norway);
Stig Foss (Hosle, Norway); Bjorn H. Granslo (Fjellhamar, Norway);
Trond Larsen (Lysaker, Norway); Andreas Lauvstad (Levanger, Norway);
Oernulf Midtskogen (Tranby, Norway).

SN 1994D is of type Ia and it is located at R.A. = 12h 34m.04, Decl. =
+07d 42'.1 (2000.0), 9" west and 7" north from the nucleus of the galaxy.

                                                Bjorn H. Granslo
                                                Director, NAS.VSS