New prime focus rotator system for the WHT by San Vicente, A, Murzka, G, Uriarte, I, Fernandez, D, Hernandez, JMD, Alfonso, J, Aguerri, L, Herreros, JM, Bonifacio, P, Burgal, JA, Vallenari, A, Carrasco, E, Abrams, DC, Dalton, G, Gribbin, F, Llomeh, E, Dee, K, Skvarc, J, Martin, C, Urratia, R, Mugica, A, Campo, R, de Bilbao, L, Kosmalska, A, Arino, J, Middleton, K, Trager, S