{
  "bibcode": "2017GCN.22186....1M",
  "body": "J. Mao, X. Ding and J.-M. Bai (YNAO) report:\n\n\nWe observed the field of GRB 171205A (D'Elia et al., GCN 22177) with the 2.4-meter optical telescope at Gao-Mei-Gu (GMG) station of Yunnan Observatories. Observations began from 22:45:21 UT, about 15.4 hours after the trigger. We clearlydetected the optical counterpart reported by Izzo et al. (GCN 22180). A very preliminary result was estimated as R~20.4 mag. We note that this source is in the outskirts of the host galaxy and the magnitude that we roughly measured has large uncertainty. Detailed analysis is ongoing.",
  "circularId": 22186,
  "createdOn": 1512532479000,
  "email": "jirongmao_obs@ynao.ac.cn",
  "subject": "GRB 171205A: GMG observation",
  "submitter": "Jirong Mao at Yunnan Obs  <jirongmao_obs@ynao.ac.cn>",
  "eventId": "GRB 171205A"
}