TITLE: GCN CIRCULAR NUMBER: 32255 SUBJECT: GRB 220623A: AbAO optical upper limit DATE: 22/06/24 01:50:04 GMT FROM: Alexei Pozanenko at IKI, Moscow N. Pankov (IKI), A. Pozanenko (IKI), R. Ya. Inasaridze (AbAO), S. Belkin (IKI), V. R. Ayvazian (AbAO), D. Datashvili (AbAO), G. V. Kapanadze (AbAO) report on behalf of GRB IKI FuN We observed the field of GRB 220623A detected by Swift (Sbarufatti et al., GCN 32243; Kennea et al., GCN 32244), AstroSat (Gopalakrishnan et al., GCN 32246) and AGILE (Ursi et al., GCN 32247) with AS-32 telescope of Abastumani Observatory (AbAO). We do not detect any optical sources within enhanced XRT position (Beardmore et al., GCN 32248). In particular we do not detect the source reported by Y.-D. Hu et al. (GCN 32251). Preliminary upper limit of a stacked image is following: Date, UT start, t-T0, Exp., Filter, OT, Err, UL(3 sigma) (mid, days) 2022-06-23 17:53:02 0.47313 65*60 R n/d n/d 21.5 The photometry is based on nearby USNO-B1.0 stars, R2 magnitude USNO-B1.0_id R2 1658-0059467 15.40 1658-0059509 15.39