{
  "bibcode": "2024GCN.35605....1P",
  "subject": "GRB 240123A: Mondy optical afterglow observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>",
  "body": "N. Pankov (HSE, IKI),  A. Pozanenko (IKI), E. Klunko (ISTP), S. Belkin (IKI) report on behalf of GRB IKI FuN:\n\nWe observed the field of GRB 231117A (D'Ai et al., GCN 35602) with AZT-33IK telescope of Mondy observatory  in  R-filter starting on 2024-01-23 (UT) 14:00:48.  We clearly detect a new fading object at coordinates (J2000) 13 17 23.87 +60 37 05.3 with uncertainties  of  0.2 arcsec which is slightly differ from coordinates reported by UVOT (D'Ai et al., GCN 35602). The object is absent in SDSS catalogue. Preliminary photometry is following\n\nDate       UT start  t-T0     Exp.   Filter   OT     Err.\n                   (mid, days)  (s)\n2024-01-23 14:00:48  0.126415  7x120 R        19.07  0.10 20.9\n2024-01-23 14:20:48  0.144479 13x120 R        19.25  0.10 21.3  \n2024-01-23 14:46:49  0.163934 15x120 R        19.37  0.11 21.3  \n\nThe photometry is based on nearby USNO-B1.0 R2 stars. \n\n",
  "createdOn": 1706025135758,
  "eventId": "GRB 240123A",
  "submittedHow": "email-legacy",
  "circularId": 35605
}