{
  "bibcode": "2020GCN.28701....1F",
  "body": "S.Y. Fu (NAOC), Z.P. Zhu (NAOC, HUST), X. Liu, D. Xu (NAOC), X. Gao \n(Urumqi No.1 Senior High School), J.Z. Liu (XAO) report:\n\nWe observed the field of GRB 201020A (Ambrosi et al., GCN 28696) using \nthe NEXT-0.6m telescope located at Nanshan, Xinjiang, China. We obtained \n15x120s frames in the Sloan r-band, starting at 13:48:25 UT on \n2020-10-20, i.e., 8.02 hr after the BAT trigger.\n\nThe optical afterglow (Ambrosi et al., GCN 28696; Adachi et al., GCN \n28697) of the burst is clearly detected in our stacked image, with r = \n19.69 +/- 0.06 mag at T_mid = 0.3461 day post-burst, calibrated with \nnearby PS1 stars.",
  "circularId": 28701,
  "createdOn": 1603210103000,
  "email": "dxu@nao.cas.cn",
  "subject": "GRB 201020A: Nanshan/NEXT optical observations",
  "submitter": "Dong Xu at NAOC/CAS  <dxu@nao.cas.cn>",
  "eventId": "GRB 201020A"
}