{
  "bibcode": "2018GCN.22812....1Z",
  "body": "WeiKang Zheng and Alex Filippenko (UC Berkeley) report on\nbehalf of the KAIT GRB team:\n\nThe 0.76-m Katzman Automatic Imaging Telescope (KAIT) at\nLick Observatory responded to Swift GRB 180620A (Evans et al.,\nGCN 22798) starting at 08:37:19 UT, 141s after the burst.\nObservations were performed with an automatic sequence in the\nV, I, and clear (roughly R) filters, and the exposure time was\n20 s per image, observations lasted about 3 hours.\nThe optical afterglow (Evans et al., GCN 22790; Butler et al.,\nGCN 22799; Elenin et al., GCN 22800; Tyurina et al., GCN 22801;\nGuidorzi et al., GCN 22803; Breeveld et al., GCN 22805;\nWatson et al., GCN 22806; Zhu et al., GCN 22811) was well\ndetected in our V, I and clear filter images. A preliminary\nanalysis shows that the afterglow rises at early time and peaked\naround 300s (also seen by Butler et al. GCN 22799; Watson et al.,\nGCN 22806). After that the light curve shows monotonic decay,\nfollowed by a flat phase between ~1ks to ~3ks.\nA preliminary light curve is posted at:\nhttp://astro.berkeley.edu/~zwk/grb/GRB180620A/GRB180620A_kait.png",
  "circularId": 22812,
  "createdOn": 1529525628000,
  "email": "weikang@berkeley.edu",
  "subject": "GRB 180620A: KAIT Optical Observations",
  "submitter": "Weikang Zheng at UC Berkeley  <weikang@berkeley.edu>",
  "eventId": "GRB 180620A"
}