GCN 45549: GRB 260909A: KAIT optical upper limit

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, automatically responded to the SVOM GRB

260909A (Saccardi et al., GCN 45534) starting at 11:32:08, 14.1 min

after the burst. Observations were performed in 3 x 3 tiling mode,

and a set of clear (roughly R) filter images were obtained. In one

of the field coving the EP-FXT uncataloged fading X-ray source (Mao

et al., GCN 45543), we did not detect any new source in our clear

coadd images with a limiting mag of ~20.5 at a mid time of 31.5 min

after the burst.