TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3030 SUBJECT: GRB 050215b : Lulin follow-up observation DATE: 05/02/16 12:09:39 GMT FROM: Kuiyun Huang at IANCU P.S. Chiang, K.Y. Huang, W.H. Ip (NCU), Y. Urata, T. Tamagawa (RIKEN), Y. Qiu (BAO), Y.Q. Lou(THCA) on behalf of the East Asian collaboration report: We observed the SWIFT/BAT error region for GRB 050215b ( Barthelmy et al. GCN 3024) using Lulin 1-m telescope at Taiwan. We imaged a V-band 300 sec exposure at 15.65 UT (~ 13.07 hrs after the burst ) and a I-band 300 sec at 17.14 UT ( ~ 14.56 hrs after the burst ). No new source was found around X-ray source reported by Page et al. (GCN 3027) at our two observations. Compare with USNO-B1 I band stars, the limiting magnitudes are V ~ 19 and I ~ 20 (3 sigma). This message may be cited.