TITLE: GCN CIRCULAR NUMBER: 41341 SUBJECT: EP250812a: Liverpool Telescope upper limits DATE: 25/08/13 10:28:50 GMT FROM: A. Bochenek at Liverpool John Moores University <a.m.bochenek@2023.ljmu.ac.uk> A. Bochenek and D. A. Perley (LJMU) report: We observed the field of the fast X-ray transient EP250812a (Zhang et al., GCN 41327) using the IO:O optical camera on the 2m robotic Liverpool Telescope. We obtained 8x100s exposures in the SDSS r’ and z’ filters starting at 2025-08-13 03:13:06 UT, approximately 14 hours after the trigger. We do not detect any new objects within the EP/FXT error region of the transient (Zhang et al., GCN 41327; Zhang et al., GCN 41339). The 3-sigma limiting magnitudes on the stacked images are r > 21.71 mag and z > 21.53 mag. This is in agreement with the detection of an optical counterpart candidate by SVOM/VT at VT_R = 22.74 ± 0.15 at 14.3 hours (Xin et al., GCN 41340). View this GCN Circular online at https://gcn.nasa.gov/circulars/41341. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...