{
  "bibcode": "2020GCN.28852....1B",
  "body": "S. Belkin (IKI), N. Pankov (HSE), I. Reva (FAPHI), A. Pozanenko (IKI) \nreport on behalf of GRB-IKI-FuN:\n\nWe observed the field of GRB 201104B (Sbarufatti et al., GCN  28825) \nwith Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory \nstarting on Nov. 05 (UT) 12:51:33.\n\nThe optical afterglow (Marshall et al., GCN 28827; Vielfaure  et al., \nGCN 28840; Oates  et al., GCN 28851) at redshift z = 1.954 (Vielfaure \net al., GCN 28840) is detected in stacked image in R-filter. Preliminary \nphotometry of the afterglow is following.\n\nDate       UT start t-T0    Filter  Exp.  OT    Err. UL(3 sigma)\n                     (mid, days)     (s)\n\n2020-11-05 12:51:33 0.82641  R      43*90 21.20 0.1 22.2\n\nThe photometry is based on nearby USNO-B1.0 stars.\n\nUSNO-B1.0_id R2\n0979-0003163 17.51\n0979-0003223 17.47\n\nWe note the presence of a galaxy 3.6\" South-East from the afterglow. The \ngalaxy is clearly visible in Pan-STARRS and SDSS and detected in \nUSNO-B1.0, PS1 and SDSS DR12 (J002051.50+075026.5).",
  "circularId": 28852,
  "createdOn": 1604661097000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 201104B: TSHAO optical observation",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 201104B"
}