TITLE: GCN CIRCULAR NUMBER: 40310 SUBJECT: GRB 250430A: KAIT optical observations DATE: 25/05/01 21:27:09 GMT FROM: Weikang Zheng at UC Berkeley <weikang@berkeley.edu> WeiKang Zheng 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 GRB 250403A (Parsotan et al., GCN 40292; Wang et al., GCN 40299) with a set of 120x60s images in the clear (roughly R) filters, at a mid time of 13.9 hours after the trigger. We marginally detected the optical afterglow (Parsotan et al., GCN 40292; Odeh et al., GCN 40295; Garnichey et al., GCN 40301; Komesh et al., GCN 40307) in the coadd image with a brightness of 21.7 +/- 0.3 mag (Vega). View this GCN Circular online at https://gcn.nasa.gov/circulars/40310. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...