GCN Circular 44536
Subject
GRB 260511A: KAIT optical afterglow observations
Event
Date
2026-05-11T07:56:17Z (6 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 260511A (Fermi GBM Team,
GCN Circ. 44529; Godet et al., GCN Circ. 44532) starting at 06:15:44,
132 seconds after SVOM trigger. Observations were performed in
3 x 3 tiling mode, and a set of clear (roughly R) filter images
were obtained. The first image covered the optical afterglow
(Jiang et al., GCN 44533; Akl et al. GCN 44534 Saccardi et al.,
GCN 44535) was at 06:16:57, 205 seconds after the burst, in which
we measure the afterglow brightness to be 16.7 +/- 0.1 mag (Vega)
calibrated to APASS catalog. Observations are on going.