{
  "createdOn": 1750069708697,
  "version": 2,
  "submitter": "Christophe Adami at LAM <christophe.adami@lam.fr>",
  "eventId": "sb25061207",
  "editedOn": 1750103279748,
  "body": "C. Adami (LAM/Pytheas/AMU), B. Schneider (LAM), Y. Degot-Longui (Pytheas/OHP), S. Basa (LAM/OHP/Pytheas/AMU), E. Le Floc'h (CEA/Irfu), report on behalf of a larger collaboration:\n\nWe observed the field of the SVOM sb25061207 X-ray transient (Zhang et al., GCN 40697; Li et al., GCN 40707; Evans et al.,GCN 40711; Li et al., GCN 40707; Zhang et al., GCN 40697) using the T120cm telescope at Observatoire de Haute-Provence (France). We obtained 54.5 minutes in the r-band, from 2025-06-12T20:32:03.91 to 2025-06-12T21:44:45.14 (from 9.9 to 11.3 hr after the trigger).\n\nIn the stacked image, we do not detect the VT optical counterpart (Li et al., GCN 40707) down to the following 3-sigma limit (AB) measured with STDWeb/STDPipe tools (Karpov 2025):\n\nr > 22.1\n\nThe photometric calibration was performed using nearby stars from the PanStarrs catalog and the magnitude is not corrected for Galactic extinction.\n\nWe acknowledge the excellent support from Observatoire de Haute-Provence and in particular the students and professors from the summer camp OHP 2025 (Institut Origines).\n",
  "circularId": 40744,
  "bibcode": "2025GCN.40744....1A",
  "subject": "sb25061207/SVOM: T120 OHP optical upper limit",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Christophe Adami at LAM <christophe.adami@lam.fr>",
  "submittedHow": "web",
  "format": "text/plain"
}