TITLE:   GCN CIRCULAR
NUMBER:  38916
SUBJECT: EP250111a: KAIT optical observations
DATE:    25/01/12 05:08:43 GMT
FROM:    Weikang Zheng at UC Berkeley <weikang@berkeley.edu>

WeiKang Zheng (UCB), Xuhui Han (NAOC), Pinpin Zhang (NAOC) and

Alexei V. Filippenko (UCB) report on behalf of the KAIT GRB team:


The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at

Lick Observatory, observed the field of EP250111a (Zhao et al.,

GCN 38905) starting at 02:53:32 UT on 2025-01-11, ~1.55 hr after

the trigger. A set of clear (roughly R) band images were obtained.

We marginally detect the optical afterglow (Fu et al., GCN 38906;

Pankov et al., GCN 38913) in the 11x60s coadd image and measure

its brightness to be 20.5 +/- 0.3 (Vega) at a mid time of ~2.70 hr

after the trigger.