{
  "bibcode": "2013GCN.14466....1Z",
  "body": "X.-H. Zhao (YNAO and PSU), J. Mao (RIKEN and YNAO), Y. X. Xin(YNAO), J.-M. Bai \r\n(YNAO) report on behalf of a larger collaboration:\r\n\r\nWe observed the field of GRB 130427A (Maselli et al., GCN 14448) with 2.4m Gao-Mei-Gu (GMG) telescope. Observation\r\nwas started at 13:25:18 UT on 2013-04-27 (i.e., 5.6 hrs after the burst) under a bad weather condition. The sloan filters of g', r',i' and z' were used. The afterglow is very bright in every band with magnitudes of g'~16.36, r'~16.1, i'~15.9 and z'~15.8. The observations are ongoing. \r\n   \r\nWe thank the GMG staff, especially Hong-Yan Gao and Jian-Duo He for\r\nperforming these observations.",
  "circularId": 14466,
  "createdOn": 1367083963000,
  "email": "zhaoxiaohong78@gmail.com",
  "subject": "GRB 130427A: GMG optical observation",
  "submitter": "Xiao-hong Zhao at Yunnan Obs  <zhaoxiaohong78@gmail.com>",
  "eventId": "GRB 130427A"
}