TITLE: GCN CIRCULAR NUMBER: 38395 SUBJECT: GRB 241128A: AbAO optical upper limit DATE: 24/11/30 15:48:32 GMT FROM: Alexei Pozanenko at IKI, Moscow <grb.alex@gmail.com> N. Pankov (HSE), A. Pozanenko (IKI), E. Klunko (ISTP), A. Volnova (IKI), S. Belkin (HSE, Monash) report on behalf of GRB IKI FuN: We observed the field of GRB 241128A (Brivio et al., GCN 38367; Page, GCN 38368; Parsotan et al., GCN 38387) with AS-32 telescope of Abastumani observatory (AbAO) in R-filter on 2024-11-29 starting (UT) 14:47:06. We do not detect the afterglow (Hu et al., GCN 38371; Izzo and Malesani, GCN 38372; Gompertz et al., GCN 38373; Akl et al., GCN 38382; Pankov et al., GCN 38383). Preliminary photometry of the field is the following Date UT start t-T0 Exp. Filter OT Err. UL(3sigma) (mid, days) (s) 2024-11-29 14:47:06 0.96877 85x60 R n/d n/d 20.2 The photometry is based on nearby USNO-B1.0 R2 star View this GCN Circular online at https://gcn.nasa.gov/circulars/38395. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...