{
  "bibcode": "2020GCN.26914....1B",
  "body": "S. Belkin (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), E. Mazaeva (IKI), \nA. Volnova (IKI) report on behalf of IKI-GRB-FuN:\n\nWe observed the field of GRB 200127A (Moss et al., GCN 26895) with \nAZT-33IK telescope of Sayan observatory (Mondy) starting on Jan. 27\n(UT) 21:48:01. We do not detect any optical object within Enhanced \nSwift-XRT position (Evans et al., GCN 26902) in agreement with \nnon-detection of an afterglow (Liu et al., GCN 26904; Fynbo et al., GCN \n26913). Preliminary photometry of the field is following.\n\nDate UT start       t-T0,   Filter Exp.,  OT  Err  UL(3sigma)\n                     (days)         (s)\n2020-01-27 21:48:01 0.30868 R      21*120 n/d n/d  22.8\n\nPhotometry is based on the USNO-B1.0 nearby stars.\nUSNO-B1.0    R2\n1349-0340555 18.02\n1349-0340544 17.39",
  "circularId": 26914,
  "createdOn": 1580207713000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 200127A: Mondy optical upper limit",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 200127A"
}