{
  "bibcode": "2019GCN.24841....1B",
  "body": "S. Belkin (IKI), A. Novichonok (KIAM), A. Zhornichenko (KIAM),  A. Pozanenko \n(IKI), E. Mazaeva  (IKI), A. Volnova (IKI), I. Molotov (KIAM), Sh. \nEhgamberdiev (UBAI)  report on behalf of larger GRB IKI FuN collaboration:\n\nWe observed the field of the  GRB 190613B    (D'Aiet al., GCN  24807) with \nRC-36 0.36-m telescope of Kitab Observatory starting on June 13  (UT) \n22:26:32 in  Clear filter.    We do not detect the optical afterglow \n(D'Aiet al., GCN  24807; Marshall al., GCN  24817; Zheng al., GCN  24818; \nUgarte Postigo al., GCN  24825; Hu al., GCN  24826).\nPreliminary photometry of the field is following.\n\nDate       UT start   t-T0       Filter Exp.   OT  Err.   UL(3sigma)\n                       (mid, days)        (s)\n\n2019-06-13  20:55:3    0.43001     CR     3600  n/d  n/d   20.0\n\nThe photometry is based on the nearby USNO-B1  (R2) stars.\n\nUSNO-B1.0_id R2\n0853-0556521 16.14\n0853-0556781 16.31",
  "circularId": 24841,
  "createdOn": 1560694205000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 190613B: Kitab observatory optical upper limit",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 190613B"
}