TITLE: GCN CIRCULAR NUMBER: 16072 SUBJECT: GRB 140402A : Xinglong TNT upper limit DATE: 14/04/02 18:10:55 GMT FROM: L.P. Xin at NAOC L. P. Xin, M. Zhai, 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 140402A (Bissaldi et al., GCN 16069; Peter et al, GCN 16070; Cummings et al., GCN 16071) under cloudy weather, with Xinglong 0.8-m TNT telescope at 16:04:37 (UT) , 15.95 hrs after the burst. No any new source in our 10*300 sec combined images down to the upper limit of 19.2 mag in R band, calibrated by nearby USNO B1.0 R2 mag.