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Globular clusters are very tighly bound, spherical collections of stars that orbit the galactic core in a satellite relationship. Globular clusters, which are found in the halo of a galaxy, contain many more stars and are much older than the less dense open cluster, which are found within the substance proper of the galaxy.

According to some sources, the Milky Way contains about 150 globular clusters. Larger galaxies like M31 in Andromeda may contain as many as 500, and some giant elliptical galaxies like M87 may contain 10,000 of these tightly bound clots of stars.

Globuar clusters contain, generally, the oldest stars in the galaxy.

Earlier images are taken on an Atlas EQ-G mount with EQMOD software and an EQDIR adapter using PHD guiding.

M2 in Aquarius

M2 in Aquarius

M30 in Capricornus

M30 in Capricornus

M22 in Sagittarius

M22 in Sagittarius

M22 in Sagittarius - Frame Crop

M22 in Sagittarius - Frame Crop

M55 in Sagittarius

M55 in Sagittarius

M55 in Sagittarius - Frame Crop

M55 in Sagittarius - Frame Crop

M62 in Ophiuchus

M62 in Ophiuchus

M62 in Ophiuchus - Frame Crop

M62 in Ophiuchus - Frame Crop

M4 in Scorpius

M4 in Scorpius

M4 in Scorpius - Frame Crop

M4 in Scorpius - Frame Crop

M19 in Ophiuchus

M19 in Ophiuchus

M19 in Ophiuchus - Frame Crop

M19 in Ophiuchus - Frame Crop

M80 in Scorpius - Widefield View

M80 in Scorpius - Widefield View

NGC 5466 in Bootes

NGC 5466 in Bootes

M3 in Canes Venatici

M3 in Canes Venatici

M56 in Lyra

M56 in Lyra

M13 in Hercules

M13 in Hercules

M15 in Pegasus

M15 in Pegasus

M4 and NGC 6144 in Scorpius

M4 and NGC 6144 in Scorpius

M75 in Sagittarius

M75 in Sagittarius