
Images
M23
Messier 23 is an open cluster of stars in the constellation Sagittarius. It was discovered by Charles Messier in 1764. It is in front of "an extensive gas and dust network". The cluster is centered about 2,050 light years away. Estimates for the number of its members range from 169 up to 414, with a directly-counted mass of 1,206 sun masses. The cluster is around 330 million years old.
M107
Messier 107, also known as the Crucifix Cluster, is a very loose globular cluster in the constellation Ophiuchus. It was discovered by Pierre Méchain in April 1782, and added to the Messier catalogue only in 1947 by Helen Sawyer Hogg together with three other objects found by Méchain. M107 is close to the galactic plane and about 20,900 light-years from Earth
M29
Messier 29, also known as the Cooling Tower Cluster, is a quite small, bright open cluster of stars just south of the central bright star Gamma Cygni in the constellation Cygnus. It was discovered by Charles Messier in 1764. Its age is estimated at 10 million years, as its five hottest stars are all giants of spectral class B0.
M6
Messier 6, also known as the Butterfly cluster, is an open cluster of stars in the southern constellation of Scorpius. The first astronomer to record its existence was Giovanni Battista Hodierna in 1654. 120 stars, ranging down to visual magnitude 15.1, have been identified as most likely cluster members. Most of the bright stars in this cluster are hot, blue B-type stars but the brightest member is a K-type orange giant star, BM Scorpii, which contrasts sharply with its blue neighbours in photographs.
M62
Messier 62, also known as the Flickering Globular Cluster, is a globular cluster in the constellation of Ophiuchus. It was discovered in 1771 by Charles Messier. M62 is about 21.5 thousand light years from Earth. The cluster may prove to be the galaxy's richest in terms of RR Lyrae variables. It is hypothesized that this cluster may be host to an intermediate mass black hole.
M11
Messier 11, also known as the Wild Duck Cluster, is one of the richest and most compact open star clusters known, located in the constellation Scutum. The cluster is approximately 6,200 light-years away from Earth and has an estimated age of around 220 million years. It contains thousands of stars, many of which are brighter and younger than our Sun.
M53
Messier 53 is a globular cluster located in the constellation Coma Berenices. It is one of the most distant globular clusters associated with the Milky Way, lying approximately 58,000 light-years from Earth. M53 is often observed alongside its neighbouring globular cluster, NGC 5053, which lies nearby in the sky.
M67
Messier 67 is an open star cluster located in the constellation Cancer. It is one of the oldest known open clusters, with an estimated age of around 4 billion years, making it significantly older than most other open clusters in the Milky Way. M67 is situated approximately 2,700 light-years from Earth and contains over 500 stars, many of which are similar in age and composition to the Sun.
M48
Messier 48 is an open star cluster in the constellation Hydra, the Water Snake. The cluster is situated approximately 1,500 light-years from Earth, making it one of the clusters closest to our solar system. M48 contains roughly 80 stars, most of which are young, hot, blue-white main-sequence stars.
M37
M37 is the brightest open cluster in the constellation of Auriga. Many of its 500 stars are fairly young bright blue stars, but the big star in the center (HD39183) is a yellow giant. M37 is photographed here during two consecutive full moon periods in December 2024 and January 2025 respectively.