{
  "bibcode": "2020GCN.27605....1B",
  "body": "S. Belkin (IKI), A. Pozanenko (IKI), A.V. Shein (INASAN), I.A. Izvekova \n(ICAMER NASU), E. Mazaeva (IKI), A. Volnova  (IKI) report on behalf of \nGRB IKI FuN:\n\nWe observed the field of GRB 200412B (Fermi GBM team, GCN 27547; Mailyan\net al., GCN 27558; see also Burgess et al., GCN 27548; Longo et al., GCN\n27557; Page et al., GCN 27561; Gupta et al., GCN 27563; Zheng et al., \nGCN 27565)  with Zeiss-2000 of Mt.Terskol observatory.  We  marginally \ndetected  the afterglow of GRB 200412B  (Lipunov et al., GCNs 27555, \n27556; see also e.g. Kumar et al., GCN 27564; Belkin et al., GCN 27566, \nStecklum et al., GCN 27567, Moskvitin GCN 27570; Xin  et al., GCN \n27571).  Preliminary photometry of the afterglow is following.\n\nDate       UT start  t-T0       Filter  OT Err. UL   Observatory\n                     (mid, days)\n2020-04-18 19:52:22 6.47687 43*120 R 23.6 0.3 23.6 Terskol Z-2000\n\nThe photometry is based on nearby USNO-B1.0 stars.\nThe update light curve can be found at \nhttp://grb.rssi.ru/GRB200412B/GRB200412B_LC.png",
  "circularId": 27605,
  "createdOn": 1587304232000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 200412B: continued Terskol optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 200412B"
}