{
  "format": "text/plain",
  "body": "D. O’Neill (Birmingham), D. B. Malesani (DAWN/NBI), A. S. Mårtensson (NOT), A. Caballero Almagro (NOT), report on behalf of a larger collaboration:\n\nWe observed the optical counterpart (Zheng et al., GCN 45825; Saccardi et al., GCN 45829; Mohan et al., GCN 45832; Saccardi et al., GCNs 45837, 45837; Shi et al., GCN 45838; An et al., GCN 45840; Arya et al., GCN 45841; Rehemtulla et al., GCN 45843; Ruiz-Laguna et al., GCN 45844; Angulo et al., GCN 45848; Li et al., GCN 45851; Chen et al., GCN 45855; Zhang et al., GCN 45856) of GRB 261007a/EP261007a (Fermi GBM team, GCN Circ. 45830; SVOM/ECLAIRs: Goto et. al., GCN Circ. 45824; SVOM/GRB: Ren et al., GCN 45863; Einstein Probe: Wen et. al., GCN Circ. 45828; NuSTAR: Waratkar et. al., GCN Circ. 45846; AstroSat CZTI: Harsha et. al., GCN 45859) using the Nordic Optical Telescope (NOT) equipped with the ALFOSC instrument. Observations were performed starting at 01:38:38 UT on October 8 2026 (about 20 hr after SVOM trigger), and consisted of 3x300 s in the SDSS-r band.\n\nIn our stacked images we measure an AB magnitude:\n\nr = 21.36 ± 0.04\n\nThis magnitude is calibrated using nearby objects from the Pan-STARRS catalog and is not corrected for Galactic extinction.\n",
  "submitter": "d.s.oneill@bham.ac.uk",
  "circularId": 45865,
  "eventType": [
    "GRB",
    "Optical Transient"
  ],
  "createdOn": 1791475668220,
  "subject": "GRB 261007A: NOT optical observations",
  "submittedHow": "web",
  "eventId": "GRB 261007A"
}