{
  "submitter": "Malte Busmann at Ludwig-Maximilians-Universität München <m.busmann@physik.lmu.de>",
  "submittedHow": "web",
  "eventId": "EP250908a",
  "createdOn": 1757375640694,
  "circularId": 41751,
  "format": "text/plain",
  "subject": "EP#01709240652 (possibly EP250908a): FTW optical and NIR observations",
  "bibcode": "2025GCN.41751....1B",
  "body": "Malte Busmann (LMU), Xander Hall (Carnegie Mellon U.), Brendan O’Connor (Carnegie Mellon U.), Daniel Gruen (LMU), and Antonella Palmese (Carnegie Mellon U.) report:\n\nWe observed the 90% localization of EP/WXT trigger 01709240652 (possibly EP250908a) for 10 x 180 s in the r, i, and J-band simultaneously with the Three Channel Imager (3KK) at the Fraunhofer Telescope at Wendelstein Observatory (FTW). Our observations started at 2025-09-08T21:33:56 (0.23 days after trigger). We performed difference imaging with i-band templates from PS1 and J-band templates from UKIDSS. We do not detect any new sources in the difference images. The mean 3-sigma depth of our J band difference is J > 20.4 AB mag, calibrated against the 2MASS catalog and not corrected for Galactic extinction.\n\nWe thank Michael Schmidt from the Wendelstein Observatory for obtaining these observations.\n"
}