TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4258 SUBJECT: GRB 051111A : Lulin BVRI multi band afterglow observation DATE: 05/11/11 11:40:53 GMT FROM: Yuji Urata at RIKEN GRB 051111A : Lulin BVRI multi band afterglow observation F.Y. Huang, K.Y. Huang, W.H. Ip (NCU), Y. Urata(RIKEN), Y. Qiu (BAO), Y.Q. Lou (THCA) on behalf of EAFON report: " We started BVRI multi band imaging of the GRB 051111A afterglow using Lulin 1-m telescope at 10:07 UT (4.1 h after the burst). We detected the optical afterglow clearly in each band. Preliminary analysis of the R-band image taken at 4.4 h after the burst with 300s exposure yields R=19.2. Further observation and analysis are in progress." This message may be cited.