{
  "bibcode": "2007GCN..6250....1Z",
  "body": "W.K. Zheng, M.Zhai, Y.L. Qiu, J.Y. Wei, J.Y. Hu, J.S. Deng,\nY. Urata, J.Z. Li and  L.P. Xin on behalf of EAFON report:\n\nWe have imaged the field of GRB 070406 with the\nTNT 0.8m telescope at Xinglong Observatory started \nfrom 20:42:33 UT on Apil. 6, about 19.86 hours after the burst.\nseven white band images were obtained,\nand no new source was found in our Totally combined image\nwithin the error region of BAT of the Swift.\nthe 3-sigma limit is ~19.8 derieved form USNO A-2.0.\n\nThis message may be cited.",
  "circularId": 6250,
  "createdOn": 1175906293000,
  "email": "xlp@bao.ac.cn",
  "subject": "GRB 070406: Xinglong TNT optical Upper Limit",
  "submitter": "L.P. Xin at NAOC  <xlp@bao.ac.cn>",
  "eventId": "GRB 070406"
}