TITLE: GCN CIRCULAR NUMBER: 6727 SUBJECT: GRB 070808 : Faulkes Telescope South Observations DATE: 07/08/09 16:43:13 GMT FROM: Andrea Melandri at Liverpool John Moores U A. Melandri, (Liverpool JMU), C. Guidorzi (Uni-Bicocca/INAF-OAB), R.J. Smith, I.A. Steele, C.G. Mundell, M.J. Burgdorf, C.J. Mottram, M.F. Bode, S.N. Fraser, S. Kobayashi, D.F. Bersier (Liverpool JMU), A. Gomboc (Ljubljana), P. O'Brien, E. Rol, N. Bannister, N. Tanvir (U. Leicester) report on behalf of larger GRB collaboration : On 2007 Aug 08 at 18:30:21 UT the Faulkes Telescope South automatically observed the field of GRB 070808 (trigger=287260, Cummings et al., GCN 6718). On our coadded frames we do not detect any source inside the refined XRT error circle (Starling et al., GCN 6725) down to a limiting magnitude of Filter Tstart(min) Tstop(min) Exposure(s) M_lim --------------------------------------------------------- R 2.35 62.9 960 20.6 i' 5.55 53.4 700 20.5 --------------------------------------------------------- Magnitudes are calibrated with respect to USNOB1 R2 in the R filter. For the SDSS-i' filter we used the magnitude derived from the pre-burst calibration field of Cool et al. (GCN 6720).