TITLE: GCN CIRCULAR NUMBER: 23199 SUBJECT: GRB 180904A: LT early observations DATE: 18/09/05 09:57:11 GMT FROM: Cristiano Guidorzi at Ferrara U,Italy C. Guidorzi, R. Martone (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell (U. Bath), A. Gomboc (U. Nova Gorica), I.A. Steele (LJMU) on behalf of a large collaboration report: The 2-m robotic Liverpool Telescope automatically began observing Swift GRB 180904A (D'Ai et al. GCN 23194) with the polarimeter RINGO3 and the IO:O camera on September 04, 21:32:12 UT (219 seconds from the GRB trigger time). Within the enhanced Swift-XRT error circle (Osborne et al. GCN 23196) we do not detect any object down to a limit of r' > 21.2 mag in a 6x10s exposure at a mid time of 37 minutes post burst, as calibrated against nearby Pan-STARRS objects, in agreement with previous reports (Malesani et al. GCN 23195; Izzo et al. GCN 23197; Moskvitin et al. GCN 23198).