GCN Circular 43110
Subject
EP251214a: KAIT optical upper limit
Event
Date
2025-12-15T07:28:01Z (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 EP251214a (Yin et al.,
GCN 43087; 43102) starting at 08:58, Dec 14 UT, about 6.52 hours
after the burst. A set of 129x60s clear (roughly R) filter images
were obtained. In our coadd image, we did not detect any new source
within the EP-WXT error circle (Yin et al., GCN 43087) down to a
limiting mag of 21.6 mag (Vega) at a mid-time of 8.88 hours after
the burst. Our result is consistent with the upper limit reported
by other groups (Basa et al., GCN 43092; Lipunov et al., GCN 43099).