{
  "bibcode": "2013GCN.14571....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 130505A  (Cannizzo, et al., GCN 14563)\nusing  80cm TNT telescope located at Xinglong observatory, China\nat 12:25:39 UT on 2013-05-05.  We obtained several R-band images.  \n\nThe reported optical counterpart (Cannizzo, et al., GCN 14563) is detected in all images. \nA prelinary analysis shows that its brightness is decaying from R~18.05 to R~18.68 mag\nduring  4.05h and 4.85h after the trigger time. \nThese magnitudes are calibrated with USNO B1.0 R2 stars, \n\nThis message may be cited.",
  "circularId": 14571,
  "createdOn": 1367764349000,
  "email": "xlp@bao.ac.cn",
  "subject": "GRB 130505A:  Xinglong TNT optical observations",
  "submitter": "L.P. Xin at NAOC  <xlp@bao.ac.cn>",
  "eventId": "GRB 130505A"
}