{
  "subject": "GRB 260802A: LCO optical upper limits",
  "submitter": "SVOM_group <svomgroup@bao.ac.cn>",
  "eventId": "GRB 260802A",
  "format": "text/plain",
  "createdOn": 1785676526897,
  "bibcode": "2026GCN.45274....1S",
  "circularId": 45274,
  "eventType": [
    "GRB",
    "Optical Transient"
  ],
  "submittedHow": "web",
  "body": "Y.Y. Shi (GXU), C. Wu, L.P. Xin (NAOC), A. Saccardi, D. Turpin (CEA/Irfu), R.C. Chen, W.J. Xie (BA-F), report on behalf of the SVOM mission team:\n\n\nWe observed the field of GRB 260802A (SVOM burst-id sb26080210) detected by SVOM (Feng et al., GCN 45270) with the LCO 1m telescope at McDonald Observatory equipped with the Sinistro instrument.\n\nOur observation started on 2026-08-02 at 10:21:46 UT (about 58.6 min after the trigger) and we obtained 3x200 s exposures in the SDSS r filter.\n\nIn the stacked image, we do not detect any new source within the SVOM/ECLAIRs error box. We measure the following upper limit calibrated against the Pan-STARRS DR1 catalog, and not corrected for Galactic extinction:\n\nr > 20.96 AB (5-sigma, mid-time 1.07 hr after the trigger).\n\nThis project is funded by the SVOM collaboration."
}