{
  "bibcode": "2020GCN.28372....1F",
  "body": "S.Y. Fu, Z.P. Zhu, X. Liu, D. Xu (NAOC), X. Gao (Urumqi No.1 Senior High \nSchool), X. Zhang, J.Z. Liu (XAO) report:\n\nWe observed the field of GRB 200906A (Page et al., GCN 28371) using the \nNEXT-0.6m telescope located at Nanshan, Xinjiang, China. We only \nobtained 2x120s frames in the Sloan r-band due to the cloudy weather, \nstarting at 15:03:47 UT on 2020-09-06, i.e., 1.88 hr after the BAT trigger.\n\nNo optical source is detected in our stacked image at the XRT position \n(Page et al., GCN 28371), down to a limiting magnitude of r~19.3, \ncalibrated with the nearby PanSTARRS field.",
  "circularId": 28372,
  "createdOn": 1599409087000,
  "email": "dxu@nao.cas.cn",
  "subject": "GRB 200906A: Nanshan/NEXT optical upper limit",
  "submitter": "Dong Xu at NAOC/CAS  <dxu@nao.cas.cn>",
  "eventId": "GRB 200906A"
}