{
  "bibcode": "2013GCN.14623....1X",
  "body": "L. P. Xin, J. Y. Wei, Y. L. Qiu,  J. Wang, \nJ. S. Deng, C. Wu, X. H. Han  report on behalf of EAFON team:\n\nWe began to observe the field of GRB 130511A  (Krimm et al. GCN 14620)\nusing  80cm TNT telescope located at Xinglong observatory, China,\nat 41.9 min after the burst on 12:12:41 UT, May 11th, 2013.    \n15*300sec R-band images was obtained.  \n\nThe reported optical counterpart (Krimm et al. GCN 14620;  Cucchiara et a. GCN 14621)  \nwas not detected in all single images and the combined image,  \ndown to the upper limit of R~19.6 mag calibrated by USNO B1.0 R2 mag,\n at the mean time of  62.3 min after the trigger time. \n\nThis message may be cited.",
  "circularId": 14623,
  "createdOn": 1368285252000,
  "email": "xlp@bao.ac.cn",
  "subject": "GRB 130511A:  Upper limit by Xinglong TNT optical observation",
  "submitter": "L.P. Xin at NAOC  <xlp@bao.ac.cn>",
  "eventId": "GRB 130511A"
}