{
  "format": "text/plain",
  "subject": "EP260512a: LCO optical upper limits",
  "eventId": "EP260512a",
  "body": "\nJ. Quirola-Vasquez (Radboud), R. A. J. Eyles-Ferris (Leicester), G. Corcoran (UCD), P. G. Jonker (Radboud), M. Fraser (UCD), A. J. Levan (Radboud & Warwick) and D. B. Malesani (DAWN/NBI and Radboud), J. A. Chacón (PUC), F. E. Bauer (SSI and UTA), report on behalf of a larger collaboration:\n\nWe observed the field of the X-ray transient EP260512a (Liang et al., GCN 44594) using LCO 1m telescopes located at the McDonald Observatory (USA) equipped with SINISTRO instruments. A series of 6x300 s exposures was taken using the SDSS-r filter, starting at 2026-05-13 06:54:11 UT (i.e., ~0.93 days after the first X-ray detection).\n\nNo new source is detected within or at the border of the EP/WXT (Liang et al., GCN 44594) uncertainty region compared with the Legacy Survey. From the stacked images, we obtain the following 3-sigma upper limits:
\n\nr > 22.2\n\nThese upper limits are in AB magnitudes, calibrated using nearby stars from the PanSTARRS catalogue, and are not corrected for Galactic extinction.\n",
  "circularId": 44612,
  "createdOn": 1778784303260,
  "submitter": "Jonathan Quirola at Radboud University <jaquirola1990@gmail.com>",
  "submittedHow": "web"
}