a 3.6m ESO (La Silla)     EFOSC1 June 1990
b JKT (La Palma)          CCD    July 1990
c 0.90m Dutch (La Palma)  CCD    March 1994
d 2.5m NOT (La Palma)     ALFOSC June 2000
e 2.5m NOT (La Palma)     ALFOSC May 2001
f 3.6m ESO (La Silla)     EFOSC2 June 2003