GCN Circular 45914
Subject
GRB 261011A: Liverpool Telescope optical observations
Event
Date
2026-10-12T00:58:10Z (10 hours ago)
From
A. Bochenek at Liverpool John Moores University <a.m.bochenek@2023.ljmu.ac.uk>
Via
Web form
A. Bochenek, D. A. Perley (LJMU), report:
We observed the field of GRB 261011A (Huang et al., GCN 45895; Cenko et al., GCN 45896) using the IO:O optical camera on the 2m robotic Liverpool Telescope. We obtained 8x100s exposures in SDSS gr filters, starting at 2026-10-11 23:08:04 UT, approximately 9.36 hours after Swift trigger.
We detect a counterpart in the stacked images, at a position consistent with that reported by Cenko et al. (GCN 45896). Photometry is given below; the g-band detection is tentative.
| MJD (mid) | T_mid-T_0 | Filter | Mag. (AB) |
| ------------ | ------------ | --------- | ------------ |
| 61324.97054 | 9.51 h | g | 22.46 ± 0.29 |
| 61324.98405 | 9.84 h | r | 21.98 ± 0.16 |
The photometry is in the AB magnitude system, was calibrated using nearby PanSTARRS secondary standards and was not corrected for extinction.