{
  "bibcode": "2020GCN.28226....1B",
  "body": "S. Belkin (IKI), A. Pozanenko (IKI), M. Krugov (AFIF),  A. Volnova \n(IKI), E. Mazaeva (IKI) report on behalf of IKI-FuN follow-up collaboration:\n\nWe observed  the GRB 200803A (Fermi GBM Team, GCN 28196; Hamburg et al., \nGCN 28206)  with Chilescope RC-1000 starting on 2020-08-05 (UT) 03:53:45 \nin r'-filter. We did not detect optical afterglow (Lipunov et al., GCN \n28202).\n\nPreliminary photometry is following.\n\n\nDate       UT start  t-T0    Filter Exp.  OT  Err. UL\n                     (mid, days)     (s)\n\n2020-08-05 03:53:45 2.03425     r'  6*600 n/d n/d  21.5\n\nThe photometry is based on nearby USNO-B1.0 stars\nRef.stars\nUSNO-B1.0_id R2\n0270-0863045 16.4\n0270-0862955 15.5\n0271-0884796 15.0",
  "circularId": 28226,
  "createdOn": 1596838043000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 200803A: Chilescope optical upper limit",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 200803A"
}