GCN Circular 17053
L. P. Xin, X. F. Wang, J. Y. Wei, Y. L. Qiu, J. S. Deng, J. Wang, X. H. Han and C. Wu on behalf of EAFON report: We began to observe GRB 141109A (D'Avanzo et al., GCNC 17037) with Xinglong 0.8-m TNT telescope at 2014-11-09, 19:45:06(UT), about 13.95 hour after the burst. The optical counterpart reported by ( Covino GCN 17039; Xu et al., 17040) was detected in 24*300 sec R-band coadded image. The brightness of the optical emission is estimated to be about R=21.84 mag at the mid-time of 15.07 hours after the burst. Combined with the reports ( Covino GCN 17039 and Xu et al., 17040 ), the decay slope of this OT is roughtly about \alpha~1.12, if we fit the data with a single power law. The message may be cited.