{
  "bibcode": "2007GCN..6956....1X",
  "body": "L.P. Xin, M. Zhai, Y.L. Qiu, J.Y. Wei, J.Y. Hu, J.S. Deng,\nJ. Wang, Y. Urata and W.K. Zheng on behalf of EAFON report:\n\nWe have imaged the field of GRB071020A (Barthelymy et al \nGCN6949) using the TNT 0.8 telescope at Xinglong observatory.\nA series of R-band images were obtained from 17:08:19.4, \n10.1 hours after the burst. \n\nIn our 15*600s combined image, �we detected afterglow \n(Schaefer et al GCN6947, Beardmore et al GCN 6955), \nThe estimated brightness derived from USNO-B1.0 was \nR=21.14 +/- 0.08 at 11.5 hours after the burst\n(mean time of the stacked image).\n\nFurther observations are encouraging.\n\nThis message may be cited.",
  "circularId": 6956,
  "createdOn": 1192919635000,
  "email": "xlp@bao.ac.cn",
  "subject": "GRB071020A: Xinglong TNT Optical afterglow observations",
  "submitter": "L.P. Xin at NAOC  <xlp@bao.ac.cn>",
  "eventId": "GRB 071020A"
}