TITLE: GCN CIRCULAR NUMBER: 19807 SUBJECT: GRB 160815A: GWAC-F60A upper limit DATE: 16/08/17 07:52:18 GMT FROM: L.P. Xin at NAOC L. P. Xin, Y. J. Xiao, X. M. Meng, J. Y. Wei, E. W. Liang, X. G. Wang, Y. G. Yang, X. M. Lu, L. Huang, X. H. Han , H. B. Cai, Y. L. Qiu, J. Wang, C. Wu, J. S. Deng and H. L. Li report: We observed GRB 160815A (Markwardt et al. GCN 19794) with GWAC-F60A 60cm optical telescope at 17:10:08 UT, Aug. 15th 2016, about 5.41 hours after the burst. The optical afterglow (Marshall et al., GCN 19795; LaPorte et al., GCN 19081) was not detected in our 20*300 sec stacked R-band images down to the 3 sigma limit of about 19.7 mag at the mid time of 6.42 hours after the burst. The brightness was calibrated by USNO B1.0 stars. GWAC-F60A is operated by Guangxi university and NAOC, CAS, at Xinglong observatory, China. The message may be cited.