{
  "bibcode": "2011GCN.12314....1Z",
  "body": "X. H. Zhao (YNAO), D. Xu (WIS), J. M. Bai (YNAO), report on behalf of a larger collaboration:\n\nWe observed the XRT field (Zhang & Grupe, GCN 12308) of GRB 110825A\n(Hurley et al., GCN 12307) with the 2.4m Gao-Mei-Gu (GMG) telescope\nequipped with YFOSC in Yunan, China. Observations started at 19:02:36\nUT on 27th August 2011 and 3x1200s R-band images were obtained.\nThe possible optical afterglow candidate, derived from a weak\ndetection from a single frame (Xu et al., GCN 12311) is not detected\nin our stacked R-band image, which gives rise to a 3sigma upper limit\nof R~23.9 mag for the XRT error circle, calibrated with the same USNO\nreference star in GCN 12311.\n\nNo further observation with the GMG telescope is planned.",
  "circularId": 12314,
  "createdOn": 1314533024000,
  "email": "zhaoxiaohong78@gmail.com",
  "subject": "GRB 110825A: GMG optical observation",
  "submitter": "Xiao-hong Zhao at Nanjing University  <zhaoxiaohong78@gmail.com>",
  "eventId": "GRB 110825A"
}