TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4925 SUBJECT: GRB060211B: optical observation DATE: 06/03/27 11:55:31 GMT FROM: Alexei Pozanenko at IKI, Moscow D. Sharapov (MAO, and NOT, La Palma), M. Ibrahimov (MAO) and A. Pozanenko (IKI), on behalf of larger GRB follow up collaboration report: We observed GRB 060211B (Mateos et al., GCN 4739; Tueller et al., GCN 4747) with 1.5m telescope of Maidanak Astronomical Observatory in R-band on Feb. 20 (UT) 16:16 - 16:50 (Salyamov et al., GCN 4744). In combined image we marginally detect two objects within refined XRT error circle Page et al. (GCN 4745): id1: RA(J2000) = 05:00:17.11 Dec = +14:57:01.06 id2: RA(J2000) = 05:00:17.19 Dec = +14:56:55.74 Mid. time, Exp., id1, id2, Limit, Seeing (UT) (s) Feb.11.6895 6x300 22.1 +/-0.3 22.3 +/-0.3 22.1 ~1.3" The photometry and astrometry is based on USNO B1.0. The both objects are not detectable in separate images, in particular in the first image obtained starting 20.7 minutes from burst onset. Combined image can be found in http://grb.rssi.ru/GRB060211b/grb060211b_AZT22R.jpg