GCN Circular 23370
R. Martone, C. Guidorzi (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell (U. Bath), A. Gomboc (U. Nova Gorica), I.A. Steele (LJMU), A. Cucchiara, D. Morris (U. of Virgin Islands) on behalf of a large collaboration report: We observed Swift GRB 181022A (Marshall et al., GCN Circ. 23364) with the LCO 1-m unit at Sutherland on October 22, from 22:20 to 22:51 UT (about 5 hours from the GRB trigger time) with the SDSS i' filter. Within the enhanced Swift-XRT error circle (Marshall et al. GCN Circ. 23364) we do not detect any source down to i���>19.0 mag from a 10x120s exposure at a mid time of about 5.05 hours after the GRB trigger time, as calibrated against nearby USNOB1 objects.