TITLE: GCN CIRCULAR NUMBER: 11772 SUBJECT: GRB 110223A: optical upper limits DATE: 11/03/03 14:41:32 GMT FROM: Alina Volnova at SAI MSU V. Rumyantsev(CrAO), N. Pit (CrAO), A. Pozanenko (IKI) report on behalf of larger  GRB  follow-up collaboration: We observed  the field of the Swift GRB 110223A (Sakamoto et al., GCN 11753) with AZT-11 telescope of CrAO starting on Feb. 23 (UT) 22:44 and under seeing of about 2.2 arsces. In the enhanced Swift-XRT position  (Evans et al., GCN 11759) we do not detect any object. We also do not detect the uncatalogued source reported by Guidorzi et al., GCN 11762. The photometry is based on the USNO B1.0 star 1775-0024257 (23 03 42.29 +87 32 38.4) assuming R=17.73. T0+      Filter,   Exposure, mag. (mid, d)              (s) 0.0965  R 21x180       >21.5 (3 sigma) The finding chart can be found at http://grb.rssi.ru/GRB110223A/GRB110223A_110223_azt11.gif