{
  "body": "J. An, X. Liu, Z.P. Zhu, S.Q. Jiang, S.Y. Fu, T.H. Lu, D. Xu (NAOC), J.Z. Liu (XAO) report on behalf of a large collaboration:\n\nWe observed the field of GRB 240529A by Swift (Eyles-Ferris et al. GCN 36556) using the 50cm-B, 50cm-C, 100cm-C telescopes (50B,50C,100C) of the JinShan project located at Altay, Xinjiang, China.\n\nObservations were carried out between 16:14:18 UT and 17:55:39 UT on 2024-05-29 in the g, r, i, and z filters. The previously reported optical afterglow, e.g., by Swift/UVOT (Eyles-Ferris et al. GCN 36556; Shilling et al., GCN 36562) was clearly detected in our images. \n\nPhotometric results are reported as follows\n\nT-T0(d) | Filter |  Mag  | MagErr\n---------------------------------\n0.5639  |   g    | 19.76 | 0.18\n0.5691  |   r    | 18.56 | 0.06\n0.5639  |   i    | 17.80 | 0.05\n0.6037  |   z    | 17.65 | 0.06\n\ncalibrated with nearby PanSTARRS stars and not corrected for Galactic extinction.\n\nFurthers observations have also been done by JinShan.\n\nWe acknowledge the excellent support from S.W Luo, M.M. Yang, Z. K. Feng, and L.F. Huo for enabling these observations.",
  "submittedHow": "web",
  "createdOn": 1719066193258,
  "subject": "GRB 240529A: JinShan optical observations",
  "submitter": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
  "eventId": "GRB 240529A",
  "circularId": 36734,
  "bibcode": "2024GCN.36734....1A",
  "format": "text/plain"
}