{
  "circularId": 42389,
  "format": "text/plain",
  "submittedHow": "web",
  "eventId": "EP251023a",
  "submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
  "subject": "EP251023a: GSP Optical Counterpart Detection",
  "createdOn": 1761210834785,
  "body": "W. X. Li, S. J. Xue (NAOC); M. Andrews, J. Farah, D. A. Howell, M. Newsome, E. Padilla Gonzalez, C. McCully, and G. Terreran (Las Cumbres Observatory), on behalf of a larger collaboration, report optical follow-up observations of EP251023a (Wu et al. GCN 42388) obtained with a Las Cumbres Observatory (LCO) 1-m telescope at Teide Observatory, Tenerife, ~3.6 hours after the EP-WXT trigger.\nWe acquired 2 × 300 s exposures using the broad optical w band.\nThe optical counterpart reported by Wortley et al. (GCN 42387) is detected. Preliminary photometry, calibrated to the r band, yields r ≈ 18.5 mag (not corrected for Galactic extinction). No known source is found at this position in the MPC or other major catalogs.\nThese observations were taken as part of the Global Supernova Project (GSP)."
}