TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3592 SUBJECT: GRB050713B: Faulkes North Telescope observation DATE: 05/07/13 14:30:59 GMT FROM: Cristiano Guidorzi at ARI,Liverpool JMU C. Guidorzi, R.J. Smith, C.G. Mundell, A. Monfardini, A. Gomboc, I. A. Steele, C.J. Mottram, D. Carter, M.F. Bode (Liverpool JMU), P. O'Brien, N. Bannister, E. Rol (Leicester), on behalf of the RoboNet-1.0 collaboration report: "The 2-m Faulkes North Telescope followed up robotically the GRB050713B detected by SWIFT (Vaughan et al., GCN 3590) 3.3 min after the GRB trigger time. The automatic "detection mode" procedure didn't detect any obvious candidate to about R=18.2 from 3 10-s images (mean epoch of 3.8 min after the GRB), with FOV of 4.6'x4.6' centred on the BAT in-flight location. The above limit is also confirmed by visual inspection of the images. The limiting magnitude is automatically calculated with respect to the USNOB1.0 'R2' values of the field objects. Further observations are ongoing. This message can be cited"