TITLE: GCN CIRCULAR NUMBER: 41586 SUBJECT: EP250828a: KAIT optical upper limit DATE: 25/08/29 06:16:36 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, observed the field of EP250828a (Liu et al., GCN 41574) starting at 09:30, Aug 28 UT, about 1.97 hours after the burst. A set of clear (roughly R) filter images were obtained. In our coadd image, we did not detect the reported afterglow (Taguchi et al., GCN 41582; Yao et al., GCN 41583; Fu et al., GCN 41584) down to a limiting mag of 20.5 mag (Vega) at a mid-time of 2.67 hours after the burst. View this GCN Circular online at https://gcn.nasa.gov/circulars/41586. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...