TITLE:   GCN CIRCULAR
NUMBER:  37656
SUBJECT: EP240930a : KAIT optical upper limit
DATE:    24/10/01 18:06:52 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, responded to EP240930a (Tian et al., GCN 37648)

starting at 05:04 UT, Oct 1st, ~11.8 hours after the trigger. A

set of 30x60s images were obtained in the clear (roughly R) filters.

Preliminary analysis do not reveal any new optical counterpart

candidate within the EP-FXT source error circle (Peng et al., GCN

37653) neither in single image, nor in the co-add images. The typical

limiting magnitude of our single clear image is about 19.5 mag, and

about 20.5 mag in the co-add image.