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IC 1101
Leo Triplet
Realm of Galaxies
Globular Clusters
M02
  M03.jpg -  M3      NGC5272   Globular Cluster   distance: 33,900 ly     actual size: 180 ly     image size: 25'x25'  FLI PL-16803 camera     12.5" Planewave scope @ 2500mm  (f/8)     AP900 mount 6.2 hour total exposure     LRGB 120:90:80:80 subs 10:10:10:10 binned 1:2:2:2     (0.73" per pixel unbinned)   MMOAG with ST402-ME camera guiding   M3 is one of the largest and brightest globular clusters. It is believed to be about 8 billion years old. It is visible to the naked eye under very good conditions. The cluster is extremely rich in variable stars. It also contains a relatively large number of Blue Stragglers, blue Main Sequence stars which appear to be much younger than the rest of the cluster – largely a mystery since their discovery in 1953.   
M05
M09
M13 Hercules
M15
M56

M3     NGC5272
Globular Cluster

distance: 33,900 ly     actual size: 180 ly     image size: 25'x25'

FLI PL-16803 camera     12.5" Planewave scope @ 2500mm (f/8)     AP900 mount
6.2 hour total exposure     LRGB 120:90:80:80 subs 10:10:10:10 binned 1:2:2:2     (0.73" per pixel unbinned)
MMOAG with ST402-ME camera guiding

M3 is one of the largest and brightest globular clusters. It is believed to be about 8 billion years old. It is visible to the naked eye under very good conditions. The cluster is extremely rich in variable stars. It also contains a relatively large number of Blue Stragglers, blue Main Sequence stars which appear to be much younger than the rest of the cluster – largely a mystery since their discovery in 1953.

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