Data on SN1994I

Revised CCD Magnitudes of SN1994I from Osaka Kyoiku University (Japan)

We report revised CCD magnitudes of SN1994I for 18 nights (from Apr. 5
to May 12). Our previous data for 7 nights (from Apr. 5 to 13) should
be replaced with new ones. We noticed that our previous measurements
were severely affected by the variable sky level around the SN. We now use 
a smaller aperture with radius equal to the FWHM of the stellar image
and the sky value is estimated just outside the aperture.

We are now testing a program to determine the sky value by approximat-
ing the galaxie's outskirt with a quadratic surface.  

---------------------------------------------------------------------- 
    UT                V                  R                  I
---------------------------------------------------------------------- 
Apr. 05.6       13.3 +- 0.02 (5)   13.0 +- 0.05 (5)   13.0 +- 0.07 (3) 
Apr. 08.8       13.1 +- 0.06 (6)   12.8 +- 0.02 (4)   no data
Apr. 09.7       13.0 +- 0.05 (4)   12.7 +- 0.06 (5)   no data
Apr. 10.6       13.0 +- 0.08 (5)   12.7 +- 0.02 (7)   12.6 +- 0.09 (5)
Apr. 11.5       13.1 +- 0.03 (8)   12.7 +- 0.02 (5)   12.6 +- 0.02 (6)
Apr. 13.6       13.3 +- 0.02 (7)   12.9 +- 0.01 (8)   12.7 +- 0.06 (7)
Apr. 14.6       13.4 +- 0.04 (6)   13.0 +- 0.04 (6)   12.8 +- 0.05 (4)
Apr. 17.7       13.9 +- 0.05 (4)   13.3 +- 0.10 (5)   13.0 +- 0.04 (4)
Apr. 19.5       14.1 +- 0.08 (6)   13.5 +- 0.05 (3)   13.3 +- 0.05 (4)
Apr. 21.6       14.3 +- 0.06 (5)   13.8 +- 0.05 (5)   13.4 +- 0.06 (4)
Apr. 24.6       14.7 +- 0.09 (5)   14.0 +- 0.04 (5)   13.6 +- 0.04 (5)
Apr. 26.5       14.8 +- 0.13 (5)   14.3 +- 0.04 (5)   13.8 +- 0.07 (6)
Apr. 28.6       15.0 +- 0.04 (6)   14.4 +- 0.10 (5)   14.0 +- 0.08 (6)
Apr. 30.6       15.2 +- 0.10 (5)   14.6 +- 0.09 (6)   14.0 +- 0.03 (5)
May   2.5       15.2 +- 0.11 (6)   14.6 +- 0.07 (6)   14.0 +- 0.06 (5)
May   6.5       15.3 +- 0.09 (4)   14.8 +- 0.12 (6)   14.4 +- 0.08 (7)
May   9.7       15.7 +- 0.12 (6)   15.1 +- 0.10 (6)   14.4 +- 0.12 (6)
May  12.7       15.7 +- 0.14 (6)   15.2 +- 0.16 (6)   14.4 +- 0.05 (6)
----------------------------------------------------------------------  
Numbers in parenthses are numbers of used CCD images. 
 
Our group consits of following members;

T. Yokoo, A. Takahashi, K. Matsumoto, J. Arimoto, and K. Sadakane