GCN Circular 4495
Klotz, A. (CESR-OMP), Boer M. (OHP), Atteia J.L. (LATT-OMP) report: We imaged the field of GRB 060111B detected by SWIFT (trigger 176918) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France. First image was acquired 28s after the GCN trigger (8s after the notice). The field elevation decreased from 28 degrees above horizon and weather conditions were good. We detected the OT source mentioned by Yost et al. (GCNC 4488) at the position (+/- 0.6 arcsec): RA(J2000.0) = 19 05 42.46 DEC(J2000.0) +70 22 32.3 OT was R~13.8 at 28s after GRB with a fading rate t^-1.74 (+/-0.1) until 200s. Magnitudes were estimated with the nearby USNO-B1 star: 1603-125792 (R=15.00). This message may be cited.