{
  "subject": "GRB 250920C: KAIT optical observations",
  "circularId": 41956,
  "eventId": "GRB 250920C",
  "createdOn": 1758651798721,
  "body": "WeiKang Zheng (UCB) and Alexei V. Filippenko (UCB) report on\n\nbehalf of the KAIT GRB team:\n\n\nThe 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at\n\nLick Observatory, observed the field of GRB 250920C (Fermi GBM\n\nteam, GCN 41903; Gupta et al., GCN 41904; Mailyan et al., GCN 41917;\n\nGupta et al., GCN 41924; SVOM Team, GCN 41929) around mid time of\n\n~0.778d after the burst. A set of 90x60s clear (roughly R) filter\n\nimages were obtained. We marginally detected the optical afterglow\n\n(Wortley et al., GCN 41907; Strausbaugh et al., GCN 41911; Ghosh\n\net al., GCN 41913; Lipunov et al., GCN 41916; Kuin et al., GCN 41920;\n\nMohan et al., GCN 41925; Sanchez-Ramirez et al., GCN 41928;\n\nGuiffreda et al., GCN 41943; de Ugarte Postigo et al., GCN 41951).\n\nWe estimate the afterglow to be 21.0 +/- 0.3 mag (Vega).\n",
  "submittedHow": "email",
  "bibcode": "2025GCN.41956....1Z",
  "submitter": "Weikang Zheng at UC Berkeley <weikang@berkeley.edu>"
}