APR 13, 2006
Star Cluster Dreams
DEC 7, 2007
Double Cluster in Perseus
JAN 3, 2009
Double Cluster in Perseus
DEC 4, 2009
The Double Cluster
OCT 14, 2010
Clusters, Hartley, and the Heart
JAN 23, 2014
Double Cluster in Perseus
SEP 24, 2016
Heart and Soul and Double Cluster
AUG 23, 2018
Comet, Heart and Soul
OCT 8, 2021
The Double Cluster in Perseus