{
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Daniele Bjørn Malesani at Cosmic Dawn Center, Niels Bohr Institute <daniele.malesani@nbi.ku.dk>",
  "submittedHow": "web",
  "format": "text/plain",
  "circularId": 41877,
  "editedOn": 1759153022790,
  "submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
  "eventId": "EP250919a",
  "body": "Wenxiong Li (NAOC), Iair Arcavi (TAU), Ido Keinan (TAU), David Sand (U of Arizona)\nWe observed the position of EP-WXT trigger 01709243841 with a Las Cumbres 1m telescope at Cerro Tololo Inter-American Observatory 0.8 hours after the Einstein Probe WXT trigger. We took 2x300s exposures in the broad optical w band. We find an uncataloged source at RA=298.55383, Dec=-48.8378 within the EP/WXT error circle and measure the following preliminary photometry calibrated to the r band:\nMJD 60937.127 Mag 17.0\nAdditional followup is encouraged.\n",
  "createdOn": 1758252535463,
  "subject": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
  "version": 3,
  "bibcode": "2025GCN.41877....1L"
}