SPECTRUM LOG:

     JD times for the SN 1984a spectra of wegner1987 and barbon1989.

     Bmax JD 2445716.5 (barbon1989) with probably +/-1 uncertainty.

     I believe all the spectra are observer frame.  But it's bloody
     hard to tell with such a small heliocentric velocity and no
     telluric lines in the spectra.

     For what it is worth, barbon1989 plot the observer-frame spectra,
     and so those may be the ones Enrico Cappellaro passed on to me
     in 1997.  wegner1987 makes no comment on deredshifting any
     of his spectra, and so maybe it didn't do that. 
     The best guess is that the spectra are observer frame.

     The wegner1987 time is an estimate since wegner1987 only
     give the day as 1984jan10 (and I assume it is a UT date).
     There is nothing in the IAU Circulars about the wegner1987 spectrum
     either.  Now midnight at Kit Peak (where the spectrum was taken)
     is about 0.3 days UT, and so the spectrum must have been taken
     within about .3 days of .3 UT.  It was near the winter solstice
     and so the nights were long.

     For what it is worth, it may also have been the case that
     the best observing time in Asiago (near midnight local time
     which is only an hour off UT time) is about midnight UT. 
     Thus midnight may have been generally about the best observing
     time, and therefore one might guess that is when wegner1987
     observed.

     JD Bmax  Heliocentric velocity (Leda, 2007jul03)
     5716.5   -277.
END:
5709.52         ! barbon1989     1984jan10.02  4100.--6800. and supposedly it is 
0.              !                              the jan10.2. spectrum.
5709.80         ! wegner1987     1984jan10.3  +/- 0.3  3.2408e+03--6.6992e+03
5710.55         ! barbon1989     1984jan11.05   3905.--6798. (observed) is the one 
0.              !                               I use, but I don't know
5710.71         ! barbon1989     1984jan11.21   which jan11 spectrum is which.
5711.59         ! barbon1989     1984jan12.09   3900.--6800. is the one I use, but 
0.              !                               I don't know which of the jan12
5711.67         ! barbon1989     1984jan12.17   is which.
5713.66         ! barbon1989     1984jan14.16   3961.--6799.
5724.60         ! barbon1989     1984jan25.10   3950.--6799.
5733.54         ! barbon1989     1984feb03.04   4000.--6800.
5735.54         ! barbon1989     1984feb05.04   4250.--6760.
5742.64         ! barbon1989     1984feb12.14   4200.--6799.
5771.39         ! barbon1989     1984mar11.89   4000.--6799.