{
  "format": "text/plain",
  "body": "A. Moskvitin (SAO RAS), O. Spiridonova (SAO RAS), A. Pozanenko (IKI),\nA. Volnova (IKI), N. Pankov (IKI) report on behalf of GRB follow-up team\n\nWe observed the field of GRB 260610B discovered by Fermi (The Fermi\nGBM team, GCN 44891; GCN 44901) with the Zeiss-1000 1-m telescope\nof SAO RAS + CCD photometer in BVRcIc filters on June 12.\n\nThe OT (O'Neill et al., GCN 44903; Watson et al., GCN 44905;\nZhu et al., GCN 44909; Gillanders et al., GCN 44910; Akl et al.,\nGCN 44911; O'Neill et al., GCN 44914; Moskvitin et al., GCN 44918;\nJackson-Horne et al., GCN 44919; Izzo, GCN 44920; Li et al.,\nGCN 44921; Bochenek and Perley, GCN 44927) is clearly detected in\nour frames with the following brightness:\n\nDate,      UTstart, t-T0,   Exp., Filter, Mag, Err., UL\n                    (mid,d) (n*s)                    (3-sigma)\n2026-06-12 19:21:03 2.41821 5*300 Rc      20.61 0.03 23.5\n\nThis preliminary photometry is based on nearby SDSS stars\n(using Lupton 2005 transformation equations) and not corrected\nfor Galactic extinction.",
  "eventId": "GRB 260610B",
  "submitter": "Alexander Moskvitin at SAO RAS <mosk@sao.ru>",
  "subject": "GRB 260610B / AT2026owq: further SAO RAS optical observations",
  "createdOn": 1781332511272,
  "circularId": 44929,
  "submittedHow": "web"
}