Posts about cluster

The Beehive Cluster / Praesepe M 44 in constellation cancer and seven asteroids

Messier 44, also known as the Beehive Cluster or Praesepe, is a bright and prominent open star cluster located in the constellation Cancer. It is located approximately 610 light-years away from Earth. It is one of the closest open star clusters to our solar system. As the cluster lies close to the ecliptic, asteroids from the solar system can often be observed in its vicinity, depending on the date of capture.

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M 44 and seven asteroids, image data: f=430mm, f/3.3 35x180s Canon EOS 6Da ISO800

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The Pleiades, Messier 45, in Constellation Taurus

The Pleiades also known as the Seven Sisters, Messier 45, and other names by different cultures, is an asterism and an open star cluster containing middle-aged, hot B-type stars in the north-west of the constellation Taurus. At a distance of about 444 light years, it is among the nearest star clusters to Earth. It is the nearest Messier object to Earth, and is the most obvious cluster to the naked eye in the night sky.

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Messier 45, the Pleiades, image data: f=430mm, f/3.3 50x180s Canon EOS 6Da ISO800

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NGC 225 - Open Cluster in Constellation Cassiopeia

NGC 225 is an open cluster in the constellation Cassiopeia. It is located roughly 2,200 light-years from Earth. It is about 100 to 150 million years old. The binary fraction, or the fraction of stars that are multiple stars, is 0.52. It is also known as sailboat cluster. But what's happening at the top of the mast? The boat is obviously being boarded by an octopus - the more clearer, the longer you expose (or if you drink too much red wine)... Beside the quite nice, probably not so well known star cluster you can see interesting dust clouds and a reflection nebula, which are cataloged as LDN 1291 and LBN 604.

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NGC 225, the sailboat cluster in Constellation Cassiopeia, Telescope Newton 10" f/4, Camera Atik 460EXM, Total Exposure Time 11h05min

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The globular cluster M13 in constellation Hercules - and a telescope first light

M13 ist probably one of the most well known globular clusters of the northern hemisphere and very simple to find in the constellation Hercules. When it is comfortably warm in the northern hemisphere in spring and early summer the cluster stands high in the sky and is a popular object for observation. For its high stellar density and apparent brightness astronomical photographers often choose it as a reference object to test a new optical setup for its image quality. This was my major motivation for this image, too. In the end the result was convincing and I chose to present it on this page.

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Image data: M13 and surrounding f=430mm, f/3.3 20x180s, 30x120s, 30x60s HDR

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