GCN Circular 28505
A. Pozanenko (IKI), S. Belkin (IKI), A. Volnova (IKI), P. Minaev (IKI), N. Pankov (HSE) report on behalf GRB IKI FuN collaboration: We observed the field of GRB 200922A (Moss et al., GCN 28471) with RC-1000 Chilescope observatory in r'-filter starting on 2020-09-22 (UT) 23:25:05. In a single obtained image of 1200 s exposure we cannot resolve the OT reported earlier (Moss et al., GCN 28471; Izzo et al., GCN 28478; Siegel et al., GCN 28482; Malesani et al., GCN 28492). Instead we subtract the flux of nearby star from SkyMapper DR1.1 from the (nearby star + OT) photometry. Preliminary photometry of the OT after the above-mentioned procedure is following. Date UT start t-T0 Filter Exp. OT(AB) Err. UL(AB) (mid, days) (s) 2020-09-22 23:25:05 0.478 r' 1200 18.92 0.05 20.7 The photometry is based on nearby SkyMapper DR1.1 stars.