{
  "bibcode": "2020GCN.29167....1B",
  "body": "S. Belkin (IKI),  A. Pozanenko (IKI), N. Pankov (HSE),  E. Klunko \n(ISTP), A. Novichonok (Petrozavodsk State University, KIAM), Sh. \nEhgamberdiev (UBAI) report on behalf of IKI-GRB-FuN:\n\nWe observed the field of  GRB 201223A (Gropp et al., GCN 29158) with \nAZT-33IK telescope of Sayan observatory (Mondy) starting on Dec. 23 (UT) \n  18:29:01 and Kitab-ISON RC-36  telescope starting (UT) 19:25:57. The \noptical transient (Lipunov  et al. GCN 29157; Gropp et al., GCN 29158; \nZhu et al. GCN 29159; Hu et al. GCN 29160; Hosokawa  et al. GCN 29164; \nRomanov et al. GCN 29165; Xin et al. GCN 29166) is detected in our \nstacked images in R-filter.\n\nPreliminary photometry of the optical transient in a combined images is \nfollowing\n\nDate       UT start   t-T0    Filter Exp.    OT    Err.  UL(3sigma)\n                       (mid, days)     (s)\n\n2020-12-23 18:29:01   0.05943 R      10*120  18.95 0.23  19.5 AZT-33IK\n2020-12-23 18:29:01   0.05943 R      55*120  19.38 0.09  22.1 AZT-33IK\n2020-12-23 19:25:57   0.08161 R      60*60   19.40 0.20  19.6 RC-36\n\nThe photometry is based on the nearby USNO-B1.0 stars\nUSNO-B1.0_id R2\n1611-0080890 18.64\n1612-0081305 18.44",
  "circularId": 29167,
  "createdOn": 1608815348000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 201223A: Mondy and Kitab optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 201223A"
}