TITLE: GCN CIRCULAR NUMBER: 10446 SUBJECT: GRB DATE: 10/02/22 18:00:16 GMT FROM: Janos Kelemen at Konkoly Obs/Hungary GRB 100213B R band observations J. Kelemen (kelemen at konkoly.hu) on behalf of the GRB OT observing program at the Konkoly Observatory. On 15 february 2010 19:56:20 UT we observed the field of GRB 100213B detected by Swift (trigger #412220; Vetere et al., GCN 10412) with a 60/90 cm Schmidt telescope located at the Mountain Station of the Konkoly Observatory using R filter. The total exposure of the coadded images were 2700 s. We examined both the XRT position and the position reported D. Malesani et al. GCN 10413. No new object brighter than 21.3 +/- 0.2 was found. Time Mag Error. Flag. [s] [R] [1-sigma] ------------------------------------- 161866 21.30 0.2 Upper Limit ------------------------------------- This message can be cited.