{
  "bibcode": "2015GCN.17631....1X",
  "body": "L. P. Xin,   X. F. Wang,  J. Y. Wei,  Y. L. Qiu,  J. S. Deng, \r\nJ. Wang,  X. H. Han and C. Wu on behalf of EAFON report:\r\n \r\nWe began to observe GRB 150323C (Amaral-Rogers et al., GCN 17621) \r\nwith Xinglong  0.8-m TNT telescope at 2015-03-23, 17:07:27(UT),\r\nabout 126 sec after the Swift trigger time. \r\n \r\nThe new source within XRT circle  (Amaral-Rogers et al., GCN 17621 ) \r\n reported by Xu et al., ( GCN 17625 )  was clearly detected  in our coadded images.  \r\nPreliminary analysis shows that  the brightness of this optical transient \r\nin R band is rising  from 21.6 to 20.2 and then decaying,  \r\nindicating that this source is the optical afterglow of the burst.  \r\nAll the magnitudes are calibrated by a nearby USNO B1.0 object \r\n( RA: 16:50:26  DEC: 50:11:48, R2=16.47mag ).\r\n \r\nThe message may be cited.",
  "circularId": 17631,
  "createdOn": 1427175261000,
  "email": "xlp@bao.ac.cn",
  "subject": "GRB 150323C :  Xinglong TNT optical observation",
  "submitter": "L.P. Xin at NAOC  <xlp@bao.ac.cn>",
  "eventId": "GRB 150323C"
}