CCD magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code SN2011dh 20110605.636 14.15CR San.VSOLJ SN2011dh 20110606.602 13.89CR San.VSOLJ Observer's code: San: Yasuo Sano (Nayoro, Hokkaido,Japan) Instruments: 28cm-SCT + ST-9E 40s exp. Comparison stars: Magnitudes based on USNO-A2.0 stars,