TITLE: GCN CIRCULAR NUMBER: 43739 SUBJECT: EP260213a: Liverpool Telescope optical upper limits DATE: 26/02/14 19:02:18 GMT FROM: Rob Eyles-Ferris at U of Leicester <raje1@leicester.ac.uk> R. A. J. Eyles-Ferris and R. L. C. Starling (Leicester) report on behalf of a larger collaboration: We observed the field of EP260213a (Yang et al., GCN 43729; Li et al., GCN 43730) with the 2m Liverpool Telescope on La Palma using the IO:O instrument. We obtained 6x150s exposures in each of the SDSS r’ and SDSS g’ filters starting at 2026-02-14 02:35:02 UT, approximately 6.6 hours after the X-ray detection. Within the EP/FXT localisation (Li et al., GCN 43730), we detect no new sources in our stacked images consistent with the results of Cotter et al. (GCN 43728), Wu et al. (GCN 43731), Maksut et al. (GCN 43732), Pankov et al. (GCN 43733), Li et al. (GCN 43734), Aryan et al. (GCN 43735), Fortin et al. (GCN 43737) and Lipunov et al. (GCN 43738). We derive 3-sigma upper limits of r’ > 23.2 and g’ > 23.5 with photometry calibrated to Pan-STARRS and not corrected for Galactic extinction. View this GCN Circular online at https://gcn.nasa.gov/circulars/43739. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...