TITLE:   GCN CIRCULAR
NUMBER:  37345
SUBJECT: GRB 240828B: KAIT optical upper limit
DATE:    24/08/29 23:40:38 GMT
FROM:    Weikang Zheng at UC Berkeley <weikang@berkeley.edu>

WeiKang Zheng and Alexei V. Filippenko (UCB),


SVOM JSWG: Jian-Yan Wei (NAOC, China), Bertrand Cordier (CEA, F),

Shuang-Nan Zhang (IHEP, CN), Stephane Basa (LAM, F), Jean-Luc Attéia

(IRAP, F), Arnaud Claret (CEA, F), Zi-Gao Dai (USTC, CN), Frederic Daigne

(IAP, F), Jin-Song Deng (NAOC, CN), Andrea Goldwurm (APC, F),

Diego  Götz (CEA, F), Xu-Hui Han (NAOC, CN), Cyril Lachaud (APC, F),

En-Wei Liang (GXU, CN), Yu-Lei Qiu (NAOC, CN), Susanna Vergani

(Obs. Paris, F), Jing Wang (NAOC, CN), Chao Wu (NAOC, CN), Li-Ping Xin

(NAOC, CN), Bing Zhang (UNLV, CN)


report on behalf of the KAIT GRB team:


The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at

Lick Observatory, responded to GRB 240828B from the SVOM/ECLAIRs

(Le Provost et al., GCN 37318) by observing the Swift/XRT afterglow

position (Page et al., GCN 37334) starting at 11:05 UT, Aug 29th,

~21.88 hours after the trigger. A set of of 48x60s clear (roughly R)

filter images were obtained. Preliminary analysis do not reveal any

new optical counterpart candidate within the X-ray afterglow error

circles (Page et al., GCN 37334), neither in single image, nor in

the co-add images. We estimate the limiting magnitude of our coadd

image to be ~20.5 mag.