TITLE: GCN CIRCULAR NUMBER: 32349 SUBJECT: GRB 220708A: BOOTES-5/JGT early optical upper limit DATE: 22/07/08 14:25:49 GMT FROM: Youdong HU at IAA-CSIC Y.-D. Hu, E. Fernandez-Garcia, A. J. Castro-Tirado, I. Perez-Garcia, M.D. Caballero-Garcia, R. Sanchez-Ramirez (IAA-CSIC), D. Hiriart and W. H. Lee (UNAM), C. J. Perez del Pulgar and I. Carrasco (UMA), I. H. Park (SKKU) on behalf of a larger collaboration, report: Following the detection of GRB 220708A by Swift (D'Elia et al. GCNC 32343), the BOOTES-5/JGT 0.6m robotic telescope at Observatorio Astronomico Nacional in San Pedro Martir (Mexico) observed the GRB location starting on Jul 08, 04:40:14 UT (~ 45 s after trigger). In the early co-added image (30 x 10 s exposures in the clear filter), no optical afterglow is detected within the enhanced Swift/XRT error region (Osborne et al. GCNC 32347) down to 20.5 mag. We thank the staff at Observatorio Astronomico Nacional in San Pedro Martir for their excellent support.