TITLE: GCN CIRCULAR NUMBER: 35609 SUBJECT: GRB 240123A: Mondy continued optical observations + correction of the GRB name in GCN 35605 DATE: 24/01/23 18:06:11 GMT FROM: Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru> N. Pankov (HSE, IKI), A. Pozanenko (IKI), E. Klunko (ISTP), S. Belkin (IKI) report on behalf of GRB IKI FuN: We continued to observe the afterglow of GRB 240123A (D'Ai et al., GCN 35602) with AZT-33IK telescope of Mondy observatory in R-filter originally started on 2024-01-23 (UT) 14:00:48 (Pankov et al., GCN 35605). We confirm the afterglow decay, which detected previously (D'Ai et al., GCN 35602; Pankov et al., GCN 35605). Preliminary photometry of the afterglow is following Date UT start t-T0 Exp. Filter OT Err. UL(3sigma) (mid, days) (s) 2024-01-23 16:03:39 0.227009 29x120 R 19.87 0.10 21.9 The photometry is based on nearby USNO-B1.0 R2 stars. We are also reporting the incorrect name of the GRB in GCN Circular No. 35605. The correct name of the GRB in GCN Circular #3560 should be GRB 240123A. View this GCN Circular online at https://gcn.nasa.gov/circulars/35609. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...