GCN Circular 28925
A. Volnova (IKI), S. Belkin (IKI), A. Pozanenko (IKI), V. Rumyantsev (CrAO), N. Pankov (HSE) report on behalf of GRB IKI FuN: Below is a correction of the photometry reported in GCN 28883 after CrAO/ZTSh optical observations on Nov., 13 (UT) 22:58:04. Preliminary photometry of the afterglow is following Date UT start t-T0 Filter Exp. OT Err. UL. (mid, days) (s) 2020-11-13 22:58:04 10.21897 R 24*120 22.45 0.14 23.6 The photometry is based on the same stars used in GCNs 28862, 28875, 28883. We apologize for a possible confusion after erroneously reported photometry in GCN 28883.