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Date: 05 Apr 1993 19:08:16 +0100
From: MUNARI%ASTRAS@jpnkyoto.kyoto-u.ac.jp
Corrigenda sent to Brian Marsden:
Dear dr. Marsden,
when I submitted to you the photoelectric photometry of SN 1993J in M81
published on IAUC 5741 I was forwarding you the data as sent to Asiago Obs. by
the amateur astronomers of AFAM (Friuli Astronomical and Meteorological
Association, Italy). Soon after that, I started to receive (via A.
Filippenko and others) BV data that immediately looked different from
the AFAM ones. So I requested the amateur astronomers to send me the
original measurements and I went through their reduction personally using the
improved BV magnitudes for the comparison star HD 86677 published by
Hanzl in IAUC 5742.
The following are the corrected values, which bring the AFAM measurement in
strict agreement with those reported by other observers for the same UT
date (Prugniel IAUC 5741, Hanzl 5742).
Sorry for the mishap
Ulisse Munari, Asiago Astrophysical Observatory
AFAM photoelectric photometry of SN 1993J in M81
U.T. 31.972/03/1993 V= +10.94 B-V= +0.37 (+/- 0.02 internal err.)
U.T. 01.020/04/1993 V= +10.90 B-V= +0.40 ( " 0.05 " " )
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