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Thanks for the interesting information, Dana.
Though I still feel we need a new class of DSO - maybe an OGC (Open Globular Cluster) to distinguish between the clusters that look almost the same as Globular Clusters (the ones that formed when the galaxies formed, and haven't formed stars since (except for Omega Centauri)) and regular open clusters which usually don't look much like globular clusters and have less stars.
Regards,
Renato.
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