{
  "bibcode": "2019GCN.23731....1P",
  "body": "Gregory S.H. Paek, Myungshin Im, Changsu Choi, Sophia Kim (CEOU/SNU),\nHyun-Il Sung (KASI), and Yuji Urata (NCU) on behalf of a larger\ncollaboration\n\nWe observed the afterglow of GRB 190114A(LaPorte et al., GCN 23677; Siegel\net al., GCN 23678; Evans et al., GCN 23679; de Ugarte Postigo et al., GCN\n23680; Evans et al., 23681; Bolmer et al., GCN 23682; D'Avanzo et al., GCN\n23683; Barthelmy et al., GCN 23685; de Ugarte Postigo et al., GCN 23687;\nSelsing et al. GCN 23697) with the 1.0m telescope at the Deokheung Optical\nAstronomy Observatory and the 1.0m telescope at the Lemonsan Optical\nAstronomical Observatory.\nThe observation at the Deokheung Optical Astronomy Observatory started at\nabout 0.2 hours after the initial alert and the observation at the Lemonsan\nOptical Astronomy Observatory started at about 24.7 hours after the initial\nalert.\nWe did not find any positive signal at both observations and obtained\nfollowing preliminary 3 sigma upper limits.\n\nobs         mjd         filter      exptime[sec]     ul[AB magtnitude]\nDOAO        58497.642   R           60*10     >17.1\nLOAO        58498.660   R           120*15    >20.3\n\nThe photometry is based on nearby APASS stars, Blaton transformation\n(Blaton et al. 2007).\n\nFurther observations and analysis are being carried out.\n\n[GCN OPS NOTE(15jan19):  The authors have corrected a mistake in the time delay\nvalue; it should have been 12.3 hrs.  Please see Circ# 23738.]",
  "circularId": 23731,
  "createdOn": 1547608314000,
  "email": "shpaek@astro.snu.ac.kr",
  "subject": "GRB 190114A: DOAO/LOAO optical observation",
  "submitter": "Gregory SungHak Paek at SNU  <shpaek@astro.snu.ac.kr>",
  "eventId": "GRB 190114A"
}