{
  "bibcode": "2022GCN.32255....1P",
  "body": "N. Pankov (IKI), A. Pozanenko (IKI), R. Ya. Inasaridze (AbAO),  S. \nBelkin (IKI), V. R. Ayvazian (AbAO),  D. Datashvili (AbAO), G. V. \nKapanadze (AbAO) report on behalf of GRB IKI FuN\n\nWe observed the field of GRB 220623A detected by Swift (Sbarufatti et \nal., GCN 32243; Kennea et al., GCN 32244), AstroSat (Gopalakrishnan et \nal., GCN 32246) and AGILE (Ursi et al., GCN 32247) with AS-32 telescope \nof Abastumani Observatory (AbAO). We do not detect any optical sources \nwithin enhanced XRT position (Beardmore et al., GCN 32248). In \nparticular we do not detect the source reported by Y.-D. Hu et al. (GCN \n32251). Preliminary upper limit of a stacked image is following:\n\n  Date,     UT start, t-T0,    Exp.,  Filter, OT,    Err,  UL(3 sigma)\n                     (mid, days)\n\n2022-06-23 17:53:02  0.47313  65*60  R      n/d    n/d    21.5\n\nThe photometry is based on nearby USNO-B1.0 stars, R2 magnitude\nUSNO-B1.0_id R2\n1658-0059467 15.40\n1658-0059509 15.39",
  "circularId": 32255,
  "createdOn": 1656035404000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 220623A: AbAO optical upper limit",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 220623A"
}