{
  "bibcode": "2016GCN.19163....1X",
  "body": "D. Xu (NAOC/CAS) reports on behalf of a collaboration:\n\nWe observed the field of GRB 160310A (Vianello et al., GCN 19158) using \nthe LCOGT 1-m located at Sutherland, South Africa. Observations started \nat 18:57:18 UT on 2016-03-10 (i.e., 18.75 hr after the burst) and 2x300s \nframes were obtained in R- and I-band each.\n\nNo credible source is detected within or at the edge of the error circle \nof  the XRT Source 2 reported in Gibson et al. (GCN 19162), down to \nlimiting magnitudes of R~20.0 and I~18.6, respectively.\n\n[GCN OPS NOTE(10mar16): Per author's request, \"SSO\" was changed to \"SAAO\".]",
  "circularId": 19163,
  "createdOn": 1457639617000,
  "email": "dxu@nao.cas.cn",
  "subject": "GRB 160310A: LCOGT-SAAO optical upper limits",
  "submitter": "Dong Xu at NAOC/CAS  <dxu@nao.cas.cn>",
  "eventId": "GRB 160310A"
}