TITLE: GCN CIRCULAR NUMBER: 12772 SUBJECT: GRB 111225A: Lightbuckets Optical Observations DATE: 11/12/29 20:12:26 GMT FROM: Tilan Ukwatta at MSU T. N. Ukwatta (MSU), E. Sonbas (GSFC/Adiyaman Univ.), T. Sakamoto (GSFC/UMBC), N. Gehrels (GSFC), J. Linnemann (MSU), K. Tollefson (MSU), and U. Abeysekara (MSU) We observed the field of Swift GRB 111225A (Siegel et al., GCN 12720) with the Lightbuckets 0.43m rental telescope LB-0002 in South Alpen, France. Ten 60 s observations were carried out in the R filter starting 2011-12-25 at 17:01:47 UT (~ 47 ks after the GRB trigger). We do not detect the optical afterglow both in the individual images and in the stacked image inside the XRT location. Our upper-limit based on the stacked observation (using the USNO-B1 catalog) is given below. Time after trigger Exposure (s) Filter Magnitude 13.2 hours 10 x 60 R > 19.7