TITLE: GCN CIRCULAR NUMBER: 26420 SUBJECT: GRB 191213A: BOOTES-5/JGT optical limit DATE: 19/12/14 08:38:06 GMT FROM: Alberto J. Castro-Tirado at IAA-CSIC I. Carrasco (UMA), Y.-D. Hu, E. Fernandez-Garcia, M. A. Castro Tirado and A. J. Castro-Tirado (IAA-CSIC), D. Hiriart and W. H. Lee (UNAM), S. Jeong and I. H. Park (SKKU) and M. D. Caballero-Garcia (ASU-CAS, CZ) on behalf of a larger collaboration, report: The 60cm BOOTES-5/JGT robotic telescope at Observatorio Astronomico Nacional in San Pedro Martir (Mexico) observed GRB 191213A ( Cenko et al., GCNC 26398 ) starting at 13:16 UT (~9.17 hr after trigger) at high airmass. Within the refined Swift/BAT error position ( Lien et al., GCNC 26418 ), no optical afterglow is found down to 18.6 mag in the clear filter on the co-added 15 images (60s each). We thank the staff at Observatorio Astronomico Nacional in San Pedro Martir for its excellent support.