GCN Circular 12758
Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR), Boer M. (OHP-CNRS), Atteia J.L. (IRAP-CNRS-OMP) report: We continue to obtain images of the field of GRB 111228A detected by SWIFT (trigger 510649) with the TAROT robotic telescope (D=25cm) located at the European Southern Observatory, La Silla observatory, Chile (early observations were done using TAROT Calern, reported in GCNC 12742 and GCNC 12746). Photometry is relative to the star NOMAD1 1083-0203467 (RA=150.0946028 DEC=+18.3231806 J2000) R=17.28 (V-R)=+0.69. Tstart Tend Rmag OT (min) (min) 788 837 19.0 +/- 0.4 840 890 19.2 +/- 0.3 Taking account for the magnitudes obtained earlier from TAROT Calern we deduce that the plateau phase may be now finished and an optical decay of ~0.5 could now occur. This message may be cited.