{
  "bibcode": "2026GCN.45324....1A",
  "submittedHow": "web",
  "format": "text/plain",
  "createdOn": 1786246987481,
  "eventId": "EP260809a",
  "body": "C. Adami (LAM/Pytheas/AMU), E. Le Floc'h (CEA/Irfu), B. Schneider (LAM), A. Saccardi (CEA/Irfu), S. Basa (LAM/OHP/Pytheas/AMU) report on behalf of a larger collaboration:\n\nWe observed the field of EP260809a (Sun et al., GCN45321) using the T193cm telescope at Observatoire de Haute-Provence (France) with the MISTRAL spectro-imager. We obtained 4x10 minutes of exposure in the r-band under a 2.3arcsec seeing, starting at 20260809_020201UT (1.4 hr after the Sun et al. trigger) and ending at 20260809_025709UT (2.3 hr after the Sun et al. trigger).\n\nIn the preliminary stacked images, we detect an object not present in PanStarr images at \n\nRA (J2000): 21:54:19.2 \nDEC (J2000): +17:36:23 \n\nwith a preliminar magnitude of: \n\nr = 21.53 +/- 0.10 mag\n\nThe photometric calibration was performed using nearby stars from the PanSTARRS catalog and the STDWeb/STDPipe tools (Karpov 2025), is in the AB system, and is not corrected for Galactic extinction.\n\nWe acknowledge the excellent support from Observatoire de Haute-Provence and in particular Stephane Favard. \n \n",
  "editedOn": 1786313947130,
  "subject": "EP260809a: OHP/T193 optical observations",
  "circularId": 45324,
  "submitter": "Christophe Adami at LAM <christophe.adami@lam.fr>",
  "version": 2,
  "eventType": [
    "X-ray Transient",
    "Optical Transient"
  ],
  "editedBy": "Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of Christophe Adami at LAM <christophe.adami@lam.fr>"
}