{
  "submitter": "Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>",
  "circularId": 35232,
  "createdOn": 1701342326146,
  "subject": "GRB 231129A: optical upper limit in Mondy observatory",
  "body": "S. Belkin (IKI), E. Klunko (ISTP), A. Pozanenko (IKI), N. Pankov (IKI, HSE) report on behalf of GRB IKI FuN:\n\nWe observed the field of Swift GRB 231129A (Gropp et al., GCN 35208; Mereghetti et al., GCN 35209; Zhang et al., GCN 35210) with AZT-33IK telescope of Mondy observatory in R-filter on 2023-11-29 starting (UT) 10:43:30. We do not detect any optical objects within the enhanced Swift-XRT error box (Goad et al., GCN 35220). Preliminary photometry of a stacked image is following\n\nDate        UT start   t-T0          Exp.  Filter  OT   Err. UL(3sigma)\n                                           (mid, days)  (s)\n\n2023-11-29  10:43:30   0.25730       33x120 R      n/d  n/d  23.1\n\nThe photometry is based on nearby USNO-B1.0 stars.\nUSNO-B1.0\nRA DEC R2\n21:10:16.6747200 +41:33:09.000000 17.36\n21:10:16.0548000 +41:32:49.822800 18.82\n\n",
  "bibcode": "2023GCN.35232....1B",
  "submittedHow": "email-legacy",
  "eventId": "GRB 231129A"
}