{
  "bibcode": "2025GCN.41251....1Z",
  "eventId": "GRB 250806A",
  "submitter": "Weikang Zheng at UC Berkeley <weikang@berkeley.edu>",
  "body": "WeiKang Zheng (UCB), Xuhui Han (NAOC), Pinpin Zhang (NAOC) and\n\nAlexei V. Filippenko (UCB) report on behalf 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 SVOM GRB 250806A (Xie\n\net al., GCN 41243) starting at 08:00:40, Aug. 06 UT, 146 seconds\n\nafter the burst. Observations were performed in 3 x 3 tiling mode,\n\nand a set of clear (roughly R) filter images were obtained.\n\nPreliminary analysis do not reveal any new optical counterpart\n\ncandidate within the Swift/XRT error circles (Campana et al., GCN\n\n41249), neither in single image, nor in the co-add images. Our\n\ntypical limiting magnitude of single image is about ~19.5 mag,\n\nwith the first image covered Swift/XRT position at 237s after the\n\nburst.  Our result is consistent with the upper limit reported by\n\nother groups (Wu et al., GCN 41244; Fortin et al., GCN 41245;\n\nFreeberg et al., GCN 41247; Xin et al., GCN 41250).\n",
  "subject": "GRB 250806A: KAIT optical upper limit",
  "createdOn": 1754501532371,
  "submittedHow": "email",
  "circularId": 41251
}