{
  "body": "A. Moskvitin (SAO), A. Volnova (IKI), V. Goranskij (SAI MSU, SAO),\nV. Vlasyuk (SAO), R. Inasaridze (AbAO), N. Pankov (IKI), A. Pozanenko\n(IKI),\non behalf of the SAO GRB follow-up team and the IKI-GRB-FuN report.\n\nWe observed the field of GRB 261011A (Huang et al., GCN 45895;\nCenko et al., GCN 45896; Ridnaia et al., GCN 45924; Barthelmy et al.,\nGCN 45930; Page et al., GCN 45933; Melandri et al., GCN 45934;\nLuo et al., GCN 45939) at redshift z = 2.407 (Pérez-García et al.,\nGCN 45931; Monsalves et al., GCN 45920) with the SAO RAS 1-m Zeiss-1000,\n0.5-m AS-500(2) and AbAO 0.7-m AS-32 telescopes on October 11.\n\nThe OT (Cenko et al., GCN 45896; O'Neill et al., GCN 45897; Fu et al.,\nGCN 45898; Izzo, GCNs 45899; 45909; Wu et al., GCN 45900; Shi et al.,\nGCN 45903; Aryan et al., GCN 45904; Saikia et al., GCN 45907;\nBochenek and Perley, GCN 45914; Li et al., GCN 45915; Zhao et al.,\nGCN 45916; Takahashi et al., GCN 45917; Cheng et al., GCN 45922;\nalso observed in NIR by Huang et al., GCN 45913) is marginally\ndetected only in the Zeiss-1000 stacked frame.\nDetails of the observation are the following.\n\nDate        UT start  t-T0      Exp,    Filter Obj    Err   UL\n Site/Telescope\n                     (mid,days) (n*s)                      (3sigma)\n2026-10-11 20:22:07  0.29806   117*30   R      n/d          21.6\n SAO/AS-500(2)\n2026-10-11 20:56:50  0.30510    3*300   Rc     21.9  0.3    22.0\n SAO/Zeiss-1000\n2026-10-11 21:01:57  0.32050    49*60   R      n/d          20.9\n AbAO/AS-32\n\nThis preliminary photometry (Vega) is based on nearby SDSS stars\n(Lupton 2005 transformation) and not corrected for Galactic extinction.\n",
  "eventId": "GRB 261011A",
  "submitter": "Alexander Moskvitin at SAO RAS <mosk@sao.ru>",
  "circularId": 45951,
  "createdOn": 1791995633127,
  "submittedHow": "email",
  "subject": "GRB 261011A: SAO RAS and AbAO optical observations"
}