{
  "submittedHow": "web",
  "createdOn": 1786632630914,
  "submitter": "Rob Eyles-Ferris at U of Leicester <raje1@leicester.ac.uk>",
  "eventId": "EP260812b",
  "format": "text/plain",
  "subject": "EP260812b: Liverpool Telescope observations",
  "bibcode": "2026GCN.45375....1E",
  "circularId": 45375,
  "eventType": [
    "X-ray Transient"
  ],
  "body": "R. A. J. Eyles-Ferris (Leicester), G. Corcoran (UCD) and R. L. C. Starling (Leicester) report on behalf of a larger collaboration:\n\nWe observed the field of the Einstein Probe fast X-ray transient EP260812b (Li et al., GCN 45368) with the 2m Liverpool Telescope on La Palma using the IO:O instrument. We obtained 5x150 s exposures in each of the SDSS r’ and z’ filters starting on 2026-08-12 at 23:59:13 UT, approximately 0.39 hr after the X-ray detection.\n\nWe detect the optical counterpart (Malesani et al., GCN 45367; Ma et al., GCN 45370; Gill et al., GCN 45371; Starling et al., GCN 45374) in both bands and measure the following photometry, calibrated to Pan-STARRS and not corrected for Galactic extinction:\n\n| t_mid - t0 (min) | Filter | AB magnitude |\n| ------------- | ------ | ------------ |\n| 31.8 | r’ | 20.33 +/- 0.03 |\n| 47.5 | z’ | 20.08 +/- 0.04 |\n\nOur photometry is consistent with that of Malesani et al. (GCN 45367) at a comparable time."
}