TITLE: GCN CIRCULAR NUMBER: 28218 SUBJECT: GRB 200806A: AbAO optical upper limit DATE: 20/08/07 12:55:16 GMT FROM: Alexei Pozanenko at IKI, Moscow S. Belkin (IKI), A. Pozanenko (IKI), R.Ya. Inasaridze (AbAO), N. Pankov (HSE), K. Kamyshnikov (HSE), V.R. Ayvazian (AbAO), G.V. Kapanadze (AbAO), E. Mazaeva (IKI), A. Volnova (IKI), I. Molotov (KIAM) report on behalf of GRB IKI FuN: We observed the field of Swift GRB 200806A (Ambrosi et al., GCN 28211) also registered by AstroSat CZTI (Gupta et al., GCN 28216) with AS-32 (0.7m) telescope of Abastumani Observatory starting on 2020-08-06 (UT) 23:42:53. We do not detect any object within the enhanced XRT position error circle (Beardmore et al., GCN 28214). Preliminary photometry of the field is following. Date UT start t-T0 Filter Exp. OT Err. UL (mid, days) (s) 2020-08-06 23:42:53 0.36498 R 63*60 n/d n/d 21.0 The photometry is based on nearby USNO-B1.0 stars USNO-B1.0_id R2 1270-0058216 15.48 1270-0058260 14.22 1270-0058260 14.98 1271-0065622 15.31