{
  "body": "S.Q. Jiang, T.H. Lu, S.Y. Fu, X. Liu, D Xu (NAOC), Z.P. Zhu (NAOC, HUST), S.W. Luo, M.M. Yang, Z. K. Feng (GYZO, NAOC) report:\n\nWe observed the field of GRB 230510A detected by Swift (Eyles-Ferris et al., GCN 33752) and Fermi(Fermi GBM team, GCN 33751) with the GOT-0.5m telescope located at Gaoyazi, Xinjiang, China. Observations started at 18:48:27 UT on 2023-05-10, i.e., 6.7 hr after the Swift/BAT trigger, 40 x 90 s images were obtained in the Sloan r filter.\n\nNo optical source is detected in our stacked image at the enhanced XRT position (Evans et al., GCN 33756), down to a 3-sigma limiting magnitude r > 19.7 (AB) at 7.27 hr post-burst, calibrated with nearby PanSTARRS stars. The upper limit is consistent with our deeper detection at the Nanshan/NEXT (Jiang et al., GCN 33761).\n\n\n",
  "createdOn": 1683789447191,
  "submitter": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
  "subject": "GRB 230510A: Gaoyazi/GOT optical upper limit",
  "circularId": 33764,
  "bibcode": "2023GCN.33764....1J",
  "eventId": "GRB 230510A"
}