TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5596 SUBJECT: GRB 060923C: Xinglong TNT optical observations DATE: 06/09/23 16:24:00 GMT FROM: W.K. Zheng at NAOC M.Zhai, L.P. Xing, Y.L. Qiu, J.Y. Wei, J.Y. Hu, J.S. Deng and W.K. Zheng on behalf of EAFON report: We have imaged the field of GRB 060923C with the TNT 0.8m telescope at Xinglong Observatory.The first image was taken at 13:36:37 UT, 215s after the burst. A series of White and R band images were obtained. No new source were detected in our combined images down to: Filter Mid_Time(s) 3 sigma limit --------------------------------- White 487 19.2 R 1210 20.0 This message may be cited.