TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3628 SUBJECT: GRB 050716: Lulin B and R band optical observations DATE: 05/07/16 17:13:22 GMT FROM: Yuji Urata at RIKEN Z.Y. Lin(NCU), K.Y. Huang, W.H. Ip (NCU), Y. Urata(RIKEN), Y. Qiu (BAO), Y.Q. Lou (THCA) on behalf of EAFON report: "We have imaged the GRB 050716 X-ray afterglow position (Rol et al. GCN 3623; J. Kennea et al. 3264) with B and R band using Lulin 1-m telescope. The observation was started at 14:30 (0.079 days after the burst) after rising the field. These images show no optical counterpart brighter than B=21.6 and R=21.3. These 3-sigma limiting magnitudes are derived from the USNO-B1.0 catalogue. This message may be cited."