{
  "bibcode": "2019GCN.24944....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 190630C (Ukwatta et al.,\nGCN 24927) starting at ~0.379 days after the burst. Observations\nwere performed in the clear (roughly R) filters, a total of 31\nimages were obtained and the exposure time was 60 s per image.\nWe do not detect any optical afterglow candidate within the Enhanced\nXRT position error circle (Goad et al., GCN 24930), neither in single\nimage, nor in the co-add images. We estimate our limiting magnitude\nof our co-added image is ~19.0 mag calibrated to the APASS catalog.",
  "circularId": 24944,
  "createdOn": 1562004013000,
  "email": "weikang@berkeley.edu",
  "subject": "GRB 190630C: KAIT Optical Upper Limit",
  "submitter": "Weikang Zheng at UC Berkeley  <weikang@berkeley.edu>",
  "eventId": "GRB 190630C"
}