TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5593 SUBJECT: GRB060923C: Faulkes Telescope North optical observations DATE: 06/09/23 15:21:20 GMT FROM: Andreja Gomboc at LT,ARI,Liverpool JMU A. Gomboc (University of Ljubljana), C. Guidorzi (Univ Bicocca & INAF-OAB), A. Melandri, I.A. Steele, R.J. Smith, C.G. Mundell, A. Monfardini, D. Carter, S. Kobayashi, D. Bersier, M. Bode (Liverpool JMU), P. O'Brien, E. Rol, N. Bannister (Leicester) report: The 2m Faulkes North Telescope (Hawaii) automatically reacted to the Swift burst GRB060923C (trigger 230711, Stamatikos et al. GCN 5591). Observations started about 4.2 min after the trigger time and were performed in R and i' bands. From the stacked images we do not detect any new source down to: Filter Start(min from GRB) End(min from GRB) TotExp(s) Lim --------------------------------------------------------------------- R 4.22 20.00 220 19.0 i' 6.52 22.70 220 17.5 ----------------------------------------------------------------------