{
  "bibcode": "2018GCN.23281....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 180930A (Tohuvavohu et al.,\nGCN 23279) starting at 12:45:41 UT, 112 seconds after the burst\nunder dawn twilight condition. Observations were performed with an\nautomatic sequence in the clear (roughly R), V, and I filters,\nand the exposure time was 20 s per image. We do not detect any\noptical afterglow candidate within the enhanced XRT position error\ncircle (Evans et al., GCN 23280) neither in single image, nor in\nthe co-add images. The typical limiting magnitude of our single\nclear image is about 18.5 mag calibrated to the Pan-STARRS1 catalog.",
  "circularId": 23281,
  "createdOn": 1538330868000,
  "email": "weikang@berkeley.edu",
  "subject": "GRB 180930A: KAIT Optical Upper Limit",
  "submitter": "Weikang Zheng at UC Berkeley  <weikang@berkeley.edu>",
  "eventId": "GRB 180930A"
}