GCN Circular 44510
Subject
GRB 260509A: KAIT optical observations
Event
Date
2026-05-10T06:13:38Z (2 days ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
Via
email
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 GRB 260509A (Götz et al.,
GCN 44504 starting at 04:56 UT, 7.08 hours after the burst. A set
of clear (roughly R) filter images were obtained. We detected the
afterglow (O'Neill et al., GCN 44505; Saccardi et al., GCN 44506;
Wu et al., GCN 44507; Álvarez et al., GCN 44509) in our coadd image.
We measure its brightness to be 21.1 +/- 0.2 mag (Vega) at mid time
of 7.37 hours after the burst.