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Leo Triplet
Realm of Galaxies
Globular Clusters
M02
M03
  M05.jpg -  M5     NGC5904   Globular Cluster   distance: 24,500 ly     actual size: 165 ly     image size 25'x25'  FLI PL-16803 camera     12.5" Planewave scope @ 2500mm  (f/8)     AP900 mount 7 hour total exposure     LRGB 80:120:120:100 subs 10:10:10:10 binned 1:2:2:2     (0.73" per pixel unbinned)   MMOAG with ST402-ME camera guiding   M5 is one of the largest globular clusters known. At 13 billion years old, it is one of the older globulars associated with the Milky Way. It contains between 100,000 and 500,000 stars. The cluster includes several RR Lyrae type variable stars  (similar to Cepheid variables). Astronomers can determine the distance to them  (and thus all stars in the cluster) by analyzing their brightness over time.   
M09
M13 Hercules
M15
M56
M71

M5     NGC5904
Globular Cluster

distance: 24,500 ly     actual size: 165 ly     image size 25'x25'

FLI PL-16803 camera     12.5" Planewave scope @ 2500mm (f/8)     AP900 mount
7 hour total exposure     LRGB 80:120:120:100 subs 10:10:10:10 binned 1:2:2:2     (0.73" per pixel unbinned)
MMOAG with ST402-ME camera guiding

M5 is one of the largest globular clusters known. At 13 billion years old, it is one of the older globulars associated with the Milky Way. It contains between 100,000 and 500,000 stars. The cluster includes several RR Lyrae type variable stars (similar to Cepheid variables). Astronomers can determine the distance to them (and thus all stars in the cluster) by analyzing their brightness over time.

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