TITLE: GCN CIRCULAR NUMBER: 24892 SUBJECT: GRB 190627A: NUTTelA-TAO optical observations DATE: 19/06/27 20:42:40 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Pozanenko (IKI), M. Krugov (AFIF), P. Мinaev (IKI), I. Reva (AFIF), B. Grossan (ECL), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf of larger GRB IKI FuN collaboration: We observed the field of the GRB 190627A (Sonbas al., GCN 24888) with CDK700 telescope (NUTTelA-TAO project) of Assy-Turgen observatory starting on June 27 (UT) 17:01:00 in R-filter. We clearly detect the optical afterglow (Sonbas al., GCN 24888; Siegel al., GCN 24889). Preliminary photometry of the afterglow is following. Date UT start t-T0 Filter Exp. OT Err. (mid, days) (s) 2019-06-27 17:19:20 0.25056 R 60 17.44 0.05 2019-06-27 19:10:35 0.32782 R 60 17.73 0.07 The photometry is based on the nearby USNO-B1 (R2) stars.