GCN Circular 5731
Klotz, A. (CESR-OMP), Boer M. (OHP), Atteia J.L. (LATT-OMP) report: We imaged the field of GRB 061019 detected by SWIFT (trigger 234516) with the TAROT robotic telescope (D=25cm) located at the La Silla observatory, Chile. The observations started 43.5s after the GRB trigger (5.3s after the notice). The elevation of the field increased from from 1 degrees above horizon and weather conditions were good. Unfortunately, the local horizon does not allow to obtain sky images before 902s after the trigger (when the source was higher than 4 deg. elevation). No OT was detected at the position of XRT (Guidorzi & Romano, GCNC 5729) nor at the position of REM (Covino et al. GCNC 5730). The date of trigger : t0 = 2006-10-19T04:19:06.816 The first image is 90.0s exposure: t0+902s to t0+992s : R > 14.8 We co-added a series of exposures: t0+904s to t0+1382s : R > 15.8 Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction. N.B. Galactic coordinates are lon=181.7352 lat= +4.2508 and the galactic extinction in R band is 3.1 magnitudes estimated from D. Schlegel et al. 1998ApJ...500..525S. N.B. Sky was cloudy at the TAROT Calern observatory. This message may be cited.