{
  "bibcode": "2024GCN.37350....1W",
  "eventId": "GRB 240828B",
  "submittedHow": "web",
  "body": "B.-T. Wang, R.-Z. Li, F.-F. Song, J. Mao, K.-X. Lu and J.-M. Bai (YNAO, CAS) report:\n\nWe observed the field of GRB 240828B (SVOM/ECLAIRs, T0 at 2024-08-28T13:12:43, GCN 37318) using the GMG-2.4m telescope at the Lijiang Observatory. The observation began at 2024-08-28T19:21:41.934, about 6.13 hours after the trigger.\n\nNo new reliable optical counterpart was detected within the 2.6-arcsec Swift/XRT error circle (GCN 37334), down to a 5-sigma limiting magnitude of sdss-r ～ 21.7 mag, derived from calibration against the Pan-STARRS DR1 field stars.\n\nWe acknowledge the staff at the Lijiang Observatory for conducting the observation.\n",
  "subject": "GRB 240828B: GMG Optical Upper Limit",
  "format": "text/plain",
  "createdOn": 1725008608533,
  "circularId": 37350,
  "submitter": "wangbaiting@ynao.ac.cn"
}