{
  "format": "text/plain",
  "circularId": 45568,
  "subject": "GRB 260914A: LCO optical observation",
  "submitter": "SVOM_group <svomgroup@bao.ac.cn>",
  "body": "A. Saccardi (CEA/Irfu), S. J. Yin (GXU), D. Turpin (CEA/Irfu), D. B. Malesani (DAWN/NBI and Radboud), J. T. Palmerio (CEA/Irfu), K. Liu (GXU), Y. Ma (NAOC), report on behalf of the SVOM mission team:\n\nWe observed the field of GRB 260914A detected by SVOM/ECLAIRs (Wang et al., GCN 45562) with the LCO 1m telescope at Siding Spring Observatory equipped with the Sinistro instrument.\n\nOur observation started on 2026-09-14 at 15:01:12 UT (about 3.81 hr after the trigger) and we obtained 3x200 s exposures in each of the SDSS r and Pan-STARRS z filters.\n\nThe optical counterpart (Akl et al., GCN 45564; Palmerio et al., GCN 45565; Li et al., GCN 45566; Shi et al., GCN 45567) is detected only in our r-band images. We measure the following magnitudes calibrated against the Pan-STARRS DR1 catalog, and not corrected for Galactic extinction:\n\nr  = 20.9 +/- 0.2 AB (mid-time 4.14 hr after the trigger).\n\nNote that the magnitude reported above is not template-subtracted and is contaminated by an underlying object (r ~ 22.1) visible in the Legacy survey, and by the presence of the large nearby galaxy LEDA 1860670 (whose relationship with the GRB is unclear at the moment).\n\nThis project is funded by the SVOM collaboration.\n",
  "submittedHow": "web",
  "eventId": "GRB 260914A",
  "createdOn": 1789417682686,
  "eventType": [
    "GRB",
    "Optical Transient"
  ]
}