{
  "bibcode": "2020GCN.26958....1Z",
  "body": "WeiKang Zheng and Alexei V. Filippenko (UC Berkeley) report on\nbehalf of the KAIT GRB team:\n\nThe 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at\nLick Observatory, responded to Swift GRB 200131A (Sbarufatti et al.,\nGCN 26953) starting at 4.15 hours after the burst. Observations\nwere performed in the clear (roughly R) filters, a total of 11\nimages were obtained and the exposure time was 60 s per image.\nWe do not detect the optical afterglow reported by UVOT (Sbarufatti\net al., GCN 26953; see also Lipunov et al. GCN 26954; Butler\net al. GCN 26957), neither in single image nor in the co-add image.\nThe limiting magnitude estimated from our coadd image is about 19.5 mag.",
  "circularId": 26958,
  "createdOn": 1580531677000,
  "email": "weikang@berkeley.edu",
  "subject": "GRB 200131A: KAIT Optical Upper Limit",
  "submitter": "Weikang Zheng at UC Berkeley  <weikang@berkeley.edu>",
  "eventId": "GRB 200131A"
}