{
  "bibcode": "2019GCN.23732....1K",
  "body": "Joonho Kim, Myungshin Im, (CEOU/SNU),\n\nreport on behalf of a larger collaboration\n\n\nWe observed the optical afterglow of GRB 190114C Gropp et al., GCN 23688,\n\nTyurina et al., GCN 23690, de Ugarte Postigo et al., GCN 23692, Lipunov et\nal.\n\nGCN  23693, Selsing et al. GCN 23695, Izzo et al. GCN 23699, Bolmer et al.\n\nGCN  23702, Castro-Tirado et al. GCN 23708, Kann et al. GCN 23710, Im et al.\n\nGCN 23717; Siegel  et al. GCN  23725, Mazaeva et al. GCN 23727, D'Avanzo\n\net al. GCN 23729) with the Lee Sang Gak Telescope (LSGT; 0.42m) at the\n\nSiding Spring Observatory. The observation started at about 14.7 hours after\n\nthe initial alert, and used g, r, i, z filters with 540 sec of exposure in\neach filter.\n\n\nPreliminary photometry is following based on nearby Pan-STARRS stars.\n\n\nFilter    Date    UT-Start    Mag\n\ng    2019-01-15    10:41:00    20.2 +/- 0.3\n\nr    2019-01-15    10:50:57    19.7 +/- 0.3\n\ni    2019-01-15    11:00:42    18.6 +/- 0.3\n\nz    2019-01-15    11:10:23    18.4 +/- 0.4\n\n\nFurther observations and analysis are being carried out.",
  "circularId": 23732,
  "createdOn": 1547609437000,
  "email": "joonho@astro.snu.ac.kr",
  "subject": "GRB 190114C: LSGT optical observation",
  "submitter": "Joonho Kim at Seoul National U.  <joonho@astro.snu.ac.kr>",
  "eventId": "GRB 190114C"
}