TITLE: GCN CIRCULAR NUMBER: 7788 SUBJECT: Possible GRB080603: Faulkes Telescope North optical afterglow candidate DATE: 08/06/03 12:01:54 GMT FROM: Andreja Gomboc at LT,ARI,Liverpool JMU A. Gomboc (U. Ljubljana), I.A. Steele (Liverpool JMU), E. Rol, P. O'Brien (U. Leicester), A, Melandri, D. Bersier, C.G. Mundell, R.J. Smith, D. Carter, S. Kobayashi, M. Burgdorf, M. Bode (Liverpool JMU), C. Guidorzi (INAF-OAB), N. Bannister, N. Tanvir (U. Leicester) report: The 2-m Faulkes Telescope North (Hawaii) automatically reacted to the INTEGRAL trigger 5283 and possible GRB 080603 and started observing the field at 1.3 min after the trigger. We detect an optical afterglow candidate at: RA 18:37:38.1, dec +62:44:39.4. We estimate the magnitude of the source (calibrated to USNO-B1.0 catalogue) to be I=20.3+-0.3 at t_0+5.93 min and R=19.6+-0.3 at t_0+7.37 min.