TITLE: GCN CIRCULAR NUMBER: 11979 SUBJECT: GRB 110422A: optical observations in CrAO, second epoch DATE: 11/04/26 20:25:41 GMT FROM: Alexei Pozanenko at IKI, Moscow V. Rumyantsev, K. Antoniuk (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 110422A (Mangano et al., GCN 11957) with AZT-11 telescope of CrAO between Apr. 24 (UT) 19:21 - 21:10. We detect the afterglow (Klunko et al. GCN 11958, Gres et al. GCN 11960, Xu et al. GCN 11961). The photometry is based on the USNO B1.0 star 1651-0050626 (07 28 13.15 +75 06 51.5) assuming R=18.56: T0+ Filter, Exposure, mag. (mid, d) (s) 2.1910 R 36x180 21.3 +/-0.3