{
  "bibcode": "2020GCN.26964....1P",
  "body": "A. Pozanenko (IKI), V. Kim (AFIF, Pulkovo Observatory),  I. Reva (AFIF), \nM. Krugov (AFIF), E. Mazaeva  (IKI), A. Volnova (IKI) report on behalf \nof larger GRB IKI FuN collaboration:\n\nWe observed the field of the  GRB 200131A   (Sbarufatti al., GCN  26953) \nwith CDK700 (0.7m) telescope  of Assy-Turgen observatory starting on \nFeb. 01  (UT) 14:58:49  in  R-filter.    We marginally detect the \noptical afterglow (Sbarufatti al., GCN  26953; Lipunov  al., GCN  26954; \nButler al., GCN  26957; Strausbaugh al., GCN  26959; Kuin al., GCN  26962).\n\nPreliminary photometry of the afterglow is following.\n\nDate       UT start   t-T0       Filter Exp.   OT   Err.  UL(3sigma)\n                       (mid, days)        (s)\n\n2019-02-01 14:58:49   0.76733     R    14*360  21.4 0.3   21.5\n\nThe photometry is based on nearby USNO-B1.0  stars  (R2 magnitudes).",
  "circularId": 26964,
  "createdOn": 1580677296000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 200131A: CDK700 optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 200131A"
}