{
  "bibcode": "2020GCN.29198....1B",
  "body": "S. Belkin (IKI), A. Pozanenko (IKI), V. Rumyantsev (CrAO),  O. Burhonov \n(UBAI), Sh. Ehgamberdiev (UBAI) report  on behalf of IKI GRB FuN:\n\nWe observed GRB 201104B (Sbarufatti et al., GCN 28825) with AZT-22 \ntelescope of Maidanak Observatory  and ZTSh telescope of CrAO.\nThe optical afterglow (Marshall et al., GCN 28827; Vielfaure  et al., \nGCN 28840; Oates  et al., GCN 28851; Belkin et al., GCNs 28852, 28856, \n28871; Gupta et al., GCN 28860; Hosokawa et al., GCN 28870) at redshift \nz = 1.954 (Vielfaure et al., GCN 28840) is detected in stacked images. \nPreliminary photometry of the afterglow is following.\n\nDate       UT start t-T0    Filter  Exp.  OT    Err. UL(3 sigma)\n                     (mid, days)     (s)\n\n2020-11-09 15:57:43  4.95413 R 12*300 22.89 0.09 24.3 AZT-22\n2020-11-13 19:50:05  9.12784 R 45*120 23.20 0.12 24.0 ZTSh\n\nThe photometry is based on nearby USNO-B1.0 stars.\n\nA light curve base on our observations including reported earlier \n(Belkin et al., GCNs 28852, 28856, 28871) can be found in\n\nhttp://grb.rssi.ru/GRB201104B/GRB201104B_LC_R.png",
  "circularId": 29198,
  "createdOn": 1609282178000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 201104B: Maidanak and CrAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 201104B"
}