Leibungut et al. 1991, A&AS, 89, 537 
Note this is corrected for foreground Galactic extiontion.
If Bruno used Burstein & Heiles (1984) E(B-V)=.0475, then
the observed B=8.45+4.*.0475=8.64

END:
   18.00    8.45  ....  ....   ....      Leibundgut et al. 1991