{
  "body": "A. Volnova (IKI), A. Pozanenko (IKI), N. Pankov (HSE,IKI), O. Burhonov (UBAI),  Sh. Ehgamberdiev (UBAI) report on behalf of GRB IKI FuN:\n\nWe observed the field of GRB 241018A (SVOM team, GCN 37812) with AZT-22 1.5m telescope of Maidanak observatory in R-filter on 2024-10-18 (UT) 20:12:00 and in I-filter on 2024-10-19 (UT) 19:07:59 under very good weather conditions (seeing ~1\"). The afterglow (SVOM/VT: GCN 37819; Swift XRT: Osborne et al., GCN 37823, Optical NOT: Malesani et al. GCN 37821; SVOM/VT commissioning team, GCN 37826; SVOM/C-GFT team, GCN 37841) is marginally detected in stacked images of 1 hour total exposure each. Preliminary photometry of the source is the following:\n\nDate        UT start  t-T0       Exp.   Filter OT    Err.  UL(3 sigma)\n                     (mid, days) (s)\n2024-10-18  20:12:00  0.37616    60x60  R      22.2  0.3   22.3\n2024-10-19  19:07:59  1.33287    61x60  I      22.4  0.3   22.4\n\nThe photometry is based on nearby USNO-B1.0 stars:\n\nUSNO-B_id      RA           Dec          R2     I\n1330-00124435  04:32:02.23  +43:02:33.2  17.00  16.39\n1330-00124413  04:32:00.31  +43:01:30.1  16.80  15.94\n1330-00124450  04:32:03.82  +43:01:22.9  16.55  16.24\n\nThe result is consistent with previously reported optical non-detection (Turpin et al., GCN 37818; Ferro et al., GCN 37822; Song et al., GCN 37824; Mohan et al., GCN 37825; Pankov et al., GCN 37827; Fernandez-Garcia et al., GCN 37828; Liu et al., GCN 37830; Ror et al., GCN 37837).\n",
  "createdOn": 1750847421208,
  "eventId": "GRB 241018A",
  "submittedHow": "web",
  "format": "text/plain",
  "submitter": "Alina Volnova at IKI RAS <alinusss@gmail.com>",
  "bibcode": "2025GCN.40820....1V",
  "subject": "GRB 241018A: Maidanak optical observations",
  "circularId": 40820
}