GCN Circular 4035
C. Guidorzi, C.G. Mundell, A. Gomboc, I. A. Steele, C.J. Mottram, A. Monfardini, R.J. Smith, D. Carter, M.F. Bode (Liverpool JMU), E. Rol, P. O'Brien, N. Bannister (Leicester) report: "The 2-m Faulkes North Telescope robotically followed up Swift burst GRB050925 3.3 min after the GRB trigger time. The automatic "detection mode" procedure did not detect any obvious candidate brighter than about R=19 mag from 3x10-s images (mean epoch of 3.7 min after the GRB), with FOV of 4.6'x4.6' centred on the BAT in-flight location. The field is crowded and the extinction in V is about 6.3 mag (Schlegel et al. maps). Visual inspection of the images confirms the reported non-detection. The limiting magnitude is automatically calculated with respect to the USNOB1.0 'R2' values of the field objects."