{
  "bibcode": "2011GCN.11829....1X",
  "body": "L.P. Xin, Y.L. Qiu, J.Y. Wei, J. Wang, J.S. Deng, \nC. Wu, X. H. Han, M, Zhai on behalf of EAFON report:\n\nWe observed GRB 110328A (Cummings et al.  GCN 11823) \nwith Xinglong TNT telescope at 14:13:22 UT on March 28, 2011,\n1.26 hour after the first burst trigger, 33 min after the second trigger.\nA series of R-band  images were obtained with an exposure \ntime of 300 sec for each frame.  At the X-ray location of GRB 110328A, \nand the likely optical counterpart position (Cenko et al. GCN 11827) ,\nwe do not find any new source down to the limit of 20 mag in R band\nrelatively to USNO B1.0 R2 mag at the mean time of 1.75 hour after the\nfirst trigger . \n\nFurther observations  from larger telescopes are encouraged.\n\nThis message may be cited.",
  "circularId": 11829,
  "createdOn": 1301363040000,
  "email": "xlp@bao.ac.cn",
  "subject": "GRB 110328A/ Swift J164449.3+573451 : Xinglong TNT Upper limit",
  "submitter": "L.P. Xin at NAOC  <xlp@bao.ac.cn>",
  "eventId": "GRB 110328A"
}