{
  "circularId": 40065,
  "eventId": "GRB 250403A",
  "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 GRB 250403A (Julakanti\n\net al., GCN 40026; Fermi GBM team, GCN 40025) with a set of\n\n120x60s images in the clear (roughly R) filters, at a mid time\n\nof 16.0 hours after the trigger. We marginally detected the optical\n\nafterglow (Starling et al., GCN 40028; Wu et al., GCN 40029;\n\nDu et al., GCN 40031; Li et al., GCN 40032, Julakanti et al.,\n\nGCN 40034; Ghosh et al., GCN 40039; Jiang et al., GCN 40041;\n\nPérez-Fournon et al., GCN 40043; Brivio et al., GCN 40044;\n\nXin et al., GCN Circ. 40045) in the coadd image with a brightness\n\nof 21.2 +/- 0.4 mag (Vega).\n",
  "submitter": "Weikang Zheng at UC Berkeley <weikang@berkeley.edu>",
  "bibcode": "2025GCN.40065....1Z",
  "submittedHow": "email",
  "createdOn": 1743792789218,
  "subject": "GRB 250403A: KAIT optical observations"
}