GCN Circular 12910
Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR), Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report: We imaged the field of GRB 120202A detected by INTEGRAL (trigger 6461) with the TAROT robotic telescope (D=25cm) located at the Calern observatory, France. The observations started 20s after the GRB trigger (14s after the notice). The burst was still active. The elevation of the field increased from 9 degrees above horizon and weather conditions were good. The first image is trailed with a duration of 60.0s (see the description in Klotz et al., 2006, A&A 451, L39). We do not detect any OT with a limiting magnitude of: t0+20s to t0+80s : R > 15.2 The second image is 30.0s exposure in tracking mode: t0+96s to t0+126s : R > 15.9 We co-added a series of exposures: t0+96s to t0+287s : R > 17.2 Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction. N.B. Galactic coordinates are lon=11.1564 lat=+79.4238 and the galactic extinction in R band is 0.05 magnitudes estimated from D. Schlegel et al. 1998ApJ...500..525S. This message may be cited.