TITLE: GCN CIRCULAR NUMBER: 26869 SUBJECT: GRB 200122A: Mondy optical upper limit DATE: 20/01/24 13:19:45 GMT FROM: Alexei Pozanenko at IKI, Moscow S. Belkin (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf of IKI-GRB-FuN: We observed the field of GRB 200122A (Sonbas et al. GCN 26844) with AZT-33IK telescope of Sayan observatory (Mondy) starting on Jan. 22 (UT) 20:23:25. We do not detect any optical object in the Enhanced Swift-XRT position (Osborne et al. GCN 26846). Preliminary photometry of the field is following. Date UT start t-T0 Filter Exp. OT UL(3sigma) (mid, days) (s) 2020-01-22 20:23:25 0.79876 R 30*120 n/d 23.3 Photometry is based on the USNO-B2.0 nearby stars USNO-B1.0_id R2 1175-0271901 16.74 1174-0271881 19.69