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(1993 Apr. 5)
subject: SN1993J photometric history
SN1993J circular photometric history
Updated list of observations obtained by Apr. 5.
Data and visual inspection of TV-monitor at Ouda tonight suggest that
the rapid decline phase may have stopped.
This table is based on that sent from B. H. Granslo (Norway).
For photoelectric photometry with mentioned comparisons, I have tried
to reduce them using suggested photometric standards rather than GSC
magnitudes. Such data are denoted as "corrected mag".
Visual observations from Japan have also been reduced using V sequences
in "Supernova Search Chart" (designated as SEQ="TB").
The compilation is only very preliminary and may contain errors.
Consult the original data sources for quantitative analysis.
Observations marked with * are privately communicated. Please omit
them for further distribution. (Several "*" observations in the previous
issume appeared in recent IAUCs.)
color band: U,B,V Johnson system
R,I Kron-Cousins system unless notified
g,r Gunn g,r
mv visual (close to V)
p photographic (miscellaneous materials)
C unfiltered CCD
comparisons: TB Thompson-Bryan's "Supernova Search Chart" = V
TA "The Astronomer" sequence (system ?)
GP GSC photometric field = V
AC AAVSO chart = V?
1985 01 21. 21 r Cohen, J. G. (1.5-m, CCD) g-r=+0.9 IAUC 5742
1992 10 02. 20.0 R Salzer, J. et al. IAUC 5741
1993 02 24.687 <16.0 mv Kushida, R.
1993 03 16.542 <15.0 mv Kushida, R.
1993 03 16.90 20.0 R Prugniel, P. (CCD) IAUC 5742 several images
1993 03 23.10 20.0 R Prugniel, P. (CCD) IAUC 5742 between two dates
1993 03 21.667 <16.0 p Okamoto, Y.
1993 03 25.60 <17 R van Driel, W. (Kiso CCD) IAUC 5737
1993 03 26.9 <14.0 mv Pujol, P.; Ripero, J. IAUC 5731
1993 03 27.91 <16.0 p J.-C. Merlin, (Ektachrome 400) IAUC 5740
1993 03 28.30 13.8 C A. Neely, (unfiltered CCD) IAUC 5740
1993 03 28.86 11.8 mv Garcia, F. (25-cm f/3.9 refl.) IAUC 5731
1993 03 28.89 11.6 C Rodriguez, (20-cm f/5 refl. + ST-4 CCD)
1993 03 29.01 11.3 mv Garcia, F.
1993 03 29.019 11.2 C Ulfheden,P.; Hamberg,I. (15-cm refl+ST-6 CCD)
1993 03 29.1 11.8 C Rodriguez, CCD IAUC 5731
1993 03 29.18 11.7 C Neely, A. W. (unfiltered CCD, corrected mag)
IAUC 5742
1993 03 29.691 10.3 p Y. Hashimoto (10.5cm, Fuji SG-400, no filter)
1993 03 29.82 11.2 mv Pujol, P. IAUC 5731
1993 03 29.82 11.0 mv Ripero, J.
1993 03 29.88 11.0 C Rodriguez, D. IAUC 5731
1993 03 29.95 11.1 mv Garcia, F. IAUC 5733
1993 03 30.006 11.0: C TB Solberg, R. (40.6-cm refl. + ST-6 CCD)
1993 03 30.1 11 mv Treffers, R. R. (0.8-m, CCD) IAUC 5731
1993 03 30.25 10.2 V Hartwick, F. et al. (50-cm refl. + CCD) IAUC 5731
1993 03 30.538 10.4 mv TB Yamada, M.
1993 03 30.845 10.3: mv TA Schmeer, P. (20.3-cm SCT) IAUC 5733
1993 03 30.865 10.6 mv Poyner, G. (40-cm refl.)
1993 03 30.9 10.78 V *Unger, S. (via Filippenko) B-V=0.05
1993 03 30.9 10.83 B *Unger, S. (via Filippenko) B-V=0.05
1993 03 30.90 11.0 mv GP Midtskogen, O. (31.6-cm refl.)
1993 03 30.906 10.5 mv TB Schmeer, P. (20.3-cm SCT)
1993 03 30.916 10.6 mv Poyner, G. (40-cm refl.)
1993 03 30.93 10.5 mv TA Bengtsson, H. (15-cm refl.)
1993 03 30.94 10.5 mv Shanklin, J. D. IAUC 5736
1993 03 30.989 10.6 mv Poyner, G. (40-cm refl.)
1993 03 31.00 11.05 B Prugniel, P. (0.8-m, CCD) B-R=+0.3 IAUC 5736
1993 03 31.00 10.75 R Prugniel, P. (0.8-m, CCD) B-R=+0.3 IAUC 5736
1993 03 31.1 10 mv Kohl, R. (independent discovery) IAUC 5736
1993 03 31.1 10.85 V *Unger, S. (via Filippenko) B-V=0.10
1993 03 31.1 10.95 B *Unger, S. (via Filippenko) B-V=0.10
1993 03 31.13 10.6 mv GP Midtskogen, O. (31.6-cm refl.)
1993 03 31.13 10.5 mv Caimciolo, F. IAUC 5736
1993 03 31.17 10.79 V Balonek, T. J. et al. (via Filippenko) CCD
corrected mag IAUC 5746
1993 03 31.2 10.7 R Salzer, J. et al. IAUC 5741
1993 03 31.21 10.81 V Neely, A. W. (corrected mag) IAUC 5742
1993 03 31.21 10.4 C Neely, A. W. (unfiltered CCD, corrected mag)
IAUC 5742
1993 03 31.26 10.82 V Balonek, T. J. et al. (via Filippenko) CCD,
corrected mag IAUC5746
1993 03 31.424 10.5 mv TB Yamada, M.
1993 03 31.440 10.5 mv TB Yamada, M.
1993 03 31.576 10.5 mv TB Kato, T.
1993 03 31.84 10.5 mv Zanotta, M. V. and Pesci, S. IAUC 5737
1993 03 31.9 11.06 V *Unger, S. (via Filippenko) B-V=0.22
1993 03 31.9 11.28 B *Unger, S. (via Filippenko) B-V=0.22
1993 03 31.961 10.97 V Hanzl, D. B-V=+0.33 IAUC 5742
1993 03 31.961 11.30 B Hanzl, D. B-V=+0.33 IAUC 5742
1993 03 31.972 11.06 V Sostero, G. et al. B-V=0.35 IAUC 5741
1993 03 31.972 11.41 B Sostero, G. et al. B-V=0.35 IAUC 5741
1993 04 01.00 11.40 B Prugniel, P. (CCD) B-R=+0.45 IAUC 5741
1993 04 01.00 10.95 R Prugniel, P. (CCD) B-R=+0.45 IAUC 5741
1993 04 01.055 10.4 mv Beauchamp, D. (20.3-cm SCT, 100x)
1993 04 01.08 10.7 mv Schmeer, P. (IAUC 5740)
1993 04 01.18 11.08 V Neely, A. W. (corrected mag) IAUC 5742
1993 04 01.18 11.0 C Neely, A. W. (unfiltered CCD, corrected mag)
IAUC 5742
1993 04 01.21 11.07 V Balonek, T. J. et al. (via Filippenko) CCD,
corrected mag IAUC 5746
1993 04 01.40 11.13 V Balonek, T. J. et al. (via Filippenko) CCD,
corrected mag IAUC 5746
1993 04 01.453 10.5 mv TB Takahashi, S.
1993 04 01.465 10.5 mv TB Iida, M.
1993 04 01.538 10.4 mv TB Kato, T.
1993 04 01.58 10.8 p TB Kushida (40cm Fuji SuperG400, no filter)
1993 04 01.604 11.0 mv TB Kiyota, S.
1993 04 01.622 10.4 mv TB Watanabe, Y.
1993 04 01.632 11.2 mv Shioi, H.
1993 04 01.633 10.5 p Kushida, Y. (Tri-X no filter)
1993 04 01.660 11.21 V Okyudo, M. (CCD)
1993 04 01.726 11.0 mv TB Watanabe, T.
1993 04 01.750 11.0 mv TB Koyama, H.
1993 04 01.785 10.8 p TB Koyama, H. (GX 3200, no filter)
1993 04 01.795 10.5 mv TB Hirosawa, K.
1993 04 01.803 10.7 mv AC Schmeer, P. (20.3-cm SCT)
1993 04 01.81 10.5 mv Vanmunster, T. (IAUC 5740)
1993 04 01.86 11.32 V Mikolajewski, M., B-V=0.26, V-R=0.37, V-I=0.37,
1993 04 01.86 11.58 B Mikolajewski, M., B-V=0.26, V-R=0.37, V-I=0.37,
1993 04 01.86 10.95 R Mikolajewski, M., B-V=0.26, V-R=0.37, V-I=0.37,
1993 04 01.86 10.95 I Mikolajewski, M., B-V=0.26, V-R=0.37, V-I=0.37,
IAUC 5742
1993 04 01.816 11.19 V Hanzl, D. B-V=0.32, IAUC 5742
1993 04 01.9 11.31 V *Unger, S. (via Filippenko) B-V=0.29
1993 04 01.9 11.60 B *Unger, S. (via Filippenko) B-V=0.29
1993 04 02. 10.6 mv TB Kratz, D. (20-cm f/3.5 refl.)
1993 04 02.1 11.41 V *Unger, S. (via Filippenko) B-V=0.32
1993 04 02.1 11.73 B *Unger, S. (via Filippenko) B-V=0.32
1993 04 02.13 11.37 V Balonek, T. J. et al. (via Filippenko) CCD,
corrected mag IAUC 5746
1993 04 02.15 11.45 V Neely, A. W. (corrected mag) IAUC 5742
1993 04 02.15 11.5 C Neely, A. W. (unfiltered CCD, corrected mag)
IAUC 5742
1993 04 02.22 11.39 V Balonek, T. J. et al. (via Filippenko) CCD,
corrected mag IAUC 5746
1993 04 02.37 11.45 V Balonek, T. J. et al. (via Filippenko) CCD,
corrected mag IAUC 5746
1993 04 02.439 11.0 mv TB Yamada, M.
1993 04 02.453 10.9 mv TB Takahashi, S.
1993 04 02.494 11.50 V Kato, T. (CCD)
1993 04 02.611 11.78 B Kato, T. (CCD)
1993 04 02.637 11.08 I Kato, T. (CCD)
1993 04 02.585 11.1 mv TB Watanabe, M.
1993 04 02.608 11.5 mv TB Sakuma, S.
1993 04 02.716 10.6 mv TB Abe, S.
1993 04 02.843 11.3 mv Poyner, G. (40-cm refl.)
1993 04 02.867 11.3 mv TB Granslo, B. H. (20.3-cm SCT, 123x)
1993 04 02.95 11.5 mv TA Bengtsson, H. (15-cm refl.)
1993 04 03.011 11.2 mv TB Granslo, B. H. (20.3-cm SCT, 123x)
1993 04 03.448 11.3 mv TB Takahashi, S.
1993 04 03.555 11.76 V Kato, T. (CCD)
1993 04 03.561 12.09 B Kato, T. (CCD)
1993 04 03.574 11.15 I Kato, T. (CCD)
1993 04 03.574 11.5 mv TB Takahashi, S.
1993 04 03.66 11.8 mv TB Kushida, R.
1993 04 03.68 11.9 mv TB Kushida, Y.
1993 04 05.431 11.8 mv TB Takahashi, S.
1993 04 05.437 12.2 mv TB Kiyota, S.
Regards,
Taichi Kato
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vsnet-adm@kusastro.kyoto-u.ac.jp
