HartmutVB: M45 - Pleiades
HartmutVB: Double Cluster (NGC869 and NGC884) in Perseus
HartmutVB: NGC457
HartmutVB: M11 (Wild Duck Cluster)
HartmutVB: M52 Open Cluster and Bubble Nebula
HartmutVB: M103
HartmutVB: M44 Praesepe