TITLE: GCN CIRCULAR NUMBER: 22403 SUBJECT: GRB 180205A: AbAO optical observations DATE: 18/02/08 07:52:59 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Pozanenko (IKI), A. Volnova (IKI), R. Inasaridze (AbAO), V. Ayvazian (AbAO), O. Kvaratskhelia (AbAO), G. Inasaridze (AbAO), I. Molotov (KIAM), report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 180205A (Evans et al., GCN 22381) with AS-32 (0.7m) telescope of Abastumani Observatory starting on Feb., 06 (UT) 23:53:51. We obtained several unfiltered images starting on Feb. 05 (UT) 12:54:29. The afterglow of GRB 180205A (Evans et al., GCN 22381; Zheng et al. GCN 22382; Bolmer et al. GCN 22383; Tanvir et al. GCN 22384; Volnova et al. GCN 22387; Falcon et al. GCN 22380; Xin et al. 22392; Zhu et al. 22395; Emery et al. 22396; Im et al., GCN 22397) is clearly detected in a stacked image. Preliminary photometry is following. Date UT start t-T0 Filter Exp. OT Err. UL (mid, days) (s) 2018-02-06 17:09:23 1.54515 CR 24*60 20.32 0.10 21.2 The photometry is based on several nearby SDSS DR9 stars SDSS_id R_Lupton J082719.98+113324.0 16.206 0.013 J082717.26+113400.0 16.092 0.013 J082715.06+113230.6 15.553 0.013