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Globular Clusters
M02
M03
M05
M09
  M13 Hercules.jpg -  M13     NGC6205     Great Hercules Cluster   Globular Cluster   distance: 25,000 ly     actual size: 145 ly     image size: 25'x25'  FLI PL-16803 camera     12.5" Planewave scope @ 2500mm  (f/8)     AP900 mount 7.7 hour total exposure     LRGB 80:130:130:120 subs 10:10:10:10 binned 1:2:2:2     (0.73" per pixel unbinned)   MMOAG with ST402-ME camera guiding   M13 is one of the best known globular clusters. It is composed of about a half million stars and is barely visible with the naked eye on a very clear night.   
M15
M56
M71
M92
Open Clusters

M13     NGC6205     Great Hercules Cluster
Globular Cluster

distance: 25,000 ly     actual size: 145 ly     image size: 25'x25'

FLI PL-16803 camera     12.5" Planewave scope @ 2500mm (f/8)     AP900 mount
7.7 hour total exposure     LRGB 80:130:130:120 subs 10:10:10:10 binned 1:2:2:2     (0.73" per pixel unbinned)
MMOAG with ST402-ME camera guiding

M13 is one of the best known globular clusters. It is composed of about a half million stars and is barely visible with the naked eye on a very clear night.

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