TITLE: GCN CIRCULAR NUMBER: 45241 SUBJECT: GRB 260726A: Liverpool Telescope optical observations DATE: 26/07/28 11:04:58 GMT FROM: A. Bochenek at Liverpool John Moores University <a.m.bochenek@2023.ljmu.ac.uk> A. Bochenek, D. A. Perley (LJMU), report: We observed the field of GRB 260726A (Fermi GBM team, GCN 45218; Liang et al., GCN 45219; Brunet et al., GCN 45229) using the IO:O optical camera on the 2m robotic Liverpool Telescope. We obtained 8x120s exposures in SDSS r and i filters, starting at 2026-07-28 01:48:36 UT, approximately 26.06 hours after Fermi trigger. We detect a source in the i-band stacked image at the candidate counterpart position reported by Brunet et al. (GCN 45229) and Li et al. (GCN 45230), and a non-detection in the stacked r-band image, with photometry given below: MJD (mid) T_mid-T_0 Filter Mag. (AB) 61249.08219 26.23 h r > 22.03 61249.09609 26.56 h i 22.58 ± 0.16 The photometry is in the AB magnitude system, was calibrated using nearby PanSTARRS secondary standards and was not corrected for extinction. View this GCN Circular online at https://gcn.nasa.gov/circulars/45241. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...