{
  "submitter": "Weikang Zheng at UC Berkeley <weikang@berkeley.edu>",
  "eventId": "GRB 250905A",
  "subject": "GRB 250905A: KAIT optical upper limit",
  "circularId": 41715,
  "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 Swift GRB 250905A (Brivio\n\net al., GCN 41714) starting at 03:14 UT, ~64 minutes after the burst.\n\nA set of 34x60s clear (roughly R) filter images were obtained under\n\ntwilight condition. We do not detect any new optical counterpart\n\ncandidate within the XRT error circles (Brivio et al., GCN 41714),\n\ndown to an upper limit of about 20.0 (Vega) mag at a mid time of\n\n94 minutes after the burst.\n",
  "bibcode": "2025GCN.41715....1Z",
  "createdOn": 1757047872851,
  "submittedHow": "email"
}