{
  "bibcode": "2018GCN.22392....1X",
  "body": "L. P. Xin,   F. Q. Pi,  J. Y. Wei,  Y. L. Qiu, J. S. Deng,  \nJ. Wang,  X. H. Han, X. M. Meng, C. Wu, D. TURPIN, H. L. Li report:\n\nWe began to observe GRB 180205A  (Evens et al., GCN 22381)  \nwith Xinglong  0.8-m TNT telescope, China,  at 2018-02-05, 16:11:42(UT),\nabout 12.6 hours the burst.\n\nWe obtained several  R-band images with an exposure time of 300 sec for each frame.  \nThe optical afterglow (Evens et al., GCN 22381; Zheng et al., GCN 22382; \nBolmer et al., GCN 22383, 22391; Tanvir et al., GCN 22384;  Volnova et al., GCN 22387,\nWiersema et al., GCN 22388; Falcon et al., 22390 ) is clearly detected in our stacked image with 5*300 sec.\nThe brightness is estimated to be about R~19.97 mag  calibrated \nby USNO B1.0 R2 mag at about 12.7 hours after the burst,\n\nWe acknowledge the excellent support from Xinglong staff Miao Zhang.",
  "circularId": 22392,
  "createdOn": 1517885008000,
  "email": "xlp@nao.cas.cn",
  "subject": "GRB 180205A:  Xinglong TNT optical observation",
  "submitter": "L.P. Xin at NAOC  <xlp@nao.cas.cn>",
  "eventId": "GRB 180205A"
}