{
  "createdOn": 1789634194083,
  "submitter": "SVOM_group <svomgroup@bao.ac.cn>",
  "eventType": [
    "GRB",
    "Optical Transient"
  ],
  "format": "text/plain",
  "eventId": "GRB 260917B",
  "circularId": 45608,
  "subject": "GRB 260917B: LCO optical observation",
  "submittedHow": "web",
  "body": "S. J. Yin (GXU), A. Saccardi (CEA/Irfu), D. B. Malesani (DAWN/NBI and Radboud),  C. Wu (NAOC), Y.X. Guan, Y.Y. Shi(GXU),  K. Liu (GXU), report on behalf of the SVOM mission team:\n\nWe observed the field of GRB 260917B detected by SVOM/ECLAIRs (He et al., GCN 45606) with the LCO 1m telescope at Teide Observatory equipped with the Sinistro instrument.\n\nOur observation started on 2026-09-17 at 04:53:16 UT (about 1.02 hr after the trigger)  and we obtained 6x200 s exposures in the SDSS r and 3x200 s exposures in the Pan-STARRS z filters.\n\nThe optical candidate (Dornic et al., GCN 45607) is detected in our images. We measure the following magnitudes calibrated against the Pan-STARRS DR1 catalog, and not corrected for Galactic extinction:\n\nr = 21.34 +/- 0.11 AB (mid-time 1.24 hr after the trigger).\nz = 20.16 +/- 0.14 AB (mid-time 1.16 hr after the trigger).\n\nThis project is funded by the SVOM collaboration."
}