Links zu den abgebildeten Objekten 
Astronomy Picture of the Day: "NGC 869 & NGC 884: A Double Open Cluster"
NGC 869 und NGC 884 bei SEDS
Jean-Claude Mermilliod's WEBDA cluster page for NGC 869
Jean-Claude Mermilliod's WEBDA cluster page for NGC 884
SIMBAD Data of h Persei, NGC 869
SIMBAD Data of Chi Persei, NGC 884
Publications on NGC 869 (NASA ADS)
Publications on NGC 884 (NASA ADS)
Observing Reports for NGC 869 (IAAC Netastrocatalog)
Observing Reports for NGC 884 (IAAC Netastrocatalog)
NGC Online data for NGC 869
NGC Online data for NGC 884
Die veränderlichen Roten Überriesen in h und chi Persei
Deep Sky-Archiv: NGC 869 "h Persei" | NGC 884 "Chi Persei"