DSLR magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code SGRnova2012-4 20120707.559 77c Ymo.VSOLJ SGRnova2012-4 20120707.560 77c Ymo.VSOLJ Observer: M. Yamamoto (Aichi, Japan) Instruments: f=85mm(F2.4)