GCN Circular 13500
L. P. Xin, J. Y. Wei, Y. L. Qiu, J. Wang, J. S. Deng, C. Wu, X. H. Han on behalf of EAFON report: We began to observe GRB 120722A (Melandri et al. GCN 13499) with Xinglong TNT telescope in R-band at 12:56:53 (UT), 3.5 min after the burst. An optical counterpart was detected in our combined image within the errorbox of X-ray afterglow location (Melandri et al. GCN 13499) with a brightness of about 20.8 mag in R band, calibrated against the USNO B1.0 R2mag. The coordinates and magnitude of the reference star we used are 15:21:54.116 +13:15:50.70, J2000 and R2=16.91 mag in USNO B1.0. This message may be cited. Further observations are encouraged. For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org:8080/grb/index.html We thank Chunlan Lu for performing these observations.