M5 Globular Cluster in Serpens


M5 is one of the oldest globular clusters, with a computed age of 13 billion years. Its diameter is about 140 light years, making it one of the larger globular clusters.

At its distance of 24,500 light years and contains the considerably large number of 105 known variable stars. M5 is receding from us at about 50 km/sec.

I take this image through a Celestron refractor 102mm f/5 on Pixcel 237 CCD. Image is composite of 19x10 second unguided exposures (median combine in CCDSoft v5).





(C) Copyright 1996 - 2022 by Andjelko Glivar. All rights reserved. This material may not be published in any form without permission.



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