Open Star Cluster
Open star clusters are groups of stars which formed from the same huge cloud of gas and dust.
Open star cluster M41 is the most promient deep sky object in Canis Major.
List of Constellations
Winter Sky ...
Open star cluster A loose association of stars numbering from a few dozen to hundreds.
Opposition When a celestial body is opposite the Sun in the sky.
Orbit The path followed by one body as it moves around another.
Open Star Cluster
A cluster of 10 to 10,000 stars with an open, transparent appearance. The stars are not tightly grouped. Usually relatively young and located in the disk of the galaxy.
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Open star cluster NGC 6025
General:
This nice little constellation is located close to circumpolar regions of the south pole of the sky. It is lying between DECL=-60 degrees and DECL=-70 degrees and RA=17h and RA=15h.
Open star cluster NGC752 is visible without optics but becomes quite a bevy of stars with a telescope.
NGC891 can be seen as a spiral galaxy in a 4.5inch(112.5mm) telescope.
Open star cluster Messier 7
The Ptolemy Cluster (also known as Messier Object 7 or NGC 6475) is an open cluster in the constellation Scorpius.
Open Star Clusters is the SEDS site with details and extensive links to other related sites. There is a matching page on Globular Clusters.
Open Star Clusters @ SEDS Messier pages
A general overview of open clusters
Open and globular clusters overview
The moving cluster method
Open Clusters - Information and amateur observations ...
An open star cluster in the constellation of Taurus, the Pleiades is easy to see with the naked eye. Those with good eyesight can see six stars but binoculars reveal many more.
Another open star cluster in Puppis is M47. This is a bright cluster than can be seen with the naked eye under good conditions. It is a tight cluster, containing about 50 bright stars in a region approximately 12 light-years in diameter.
Identify Open Star Clusters
Find out how to locate, and tell the difference between, the Pleiades, the Hyades and the Beehive cluster.
The Pleiades open star cluster with many bright B stars
Class B stars are extremely luminous and blue. Their spectra have neutral helium, which are most prominent at the B2 subclass, and moderate hydrogen lines.
NGC 346 is an open star cluster, 210,000 light-years distant. The cluster is a star forming region. It is associated with a nebula that lies in the Small Magellanic Cloud.
The stars of the open star cluster NGC 752 are scattered over a large area. Therefore it is best viewed with binoculars. The member stars (about 100) show magnitudes between 9 and 10. NGC 752 is located near 56 And.
NGC 6193 is a large open star cluster located eight degrees west of Alpha Arae. Binoculars will show about 30 stars, the brightest of which shining at 6th magnitude.
NGC 6208 is an elusive open star cluster located 1.
(h´dz), in astronomy, open star cluster in the constellation Taurus, located immediately to the right of the bright star Aldebaran. The cluster is about 130 light-years from the earth.
On October 4, 2006, another team of astronomers announced the finding of evidence that Sol formed in a large open star cluster with hundreds to thousands of members.
When we come to study the older populations of the Magellanic Clouds, we look past the brilliant associations with their blue supergiants and HII regions, past the Cepheid variables, and the numerous open star clusters until we see in each Cloud only ...
Brent Archinal (formerly of the U.S. Naval Observatory), an expert on open star clusters. Dr.
Located in the constellation Taurus, the open star cluster Pleiades (M45) consists of over 500 stars, of which only six are visible to the bare eye, as mentioned earlier in this node.
A typical open star cluster, like that shown in Figure 19.18, may measure 10 pc across and contain 1000 or more stars. Less massive, but more extended, clusters are usually known as associations.
Another name for an open star cluster. They are often termed Galactic Clusters because they are found mainly in the plane of our galaxy (The Milky Way).
The Pleiades, a beautiful open star cluster in the constellation Taurus. It is 410 light-years away. [C95]
M51
The Whirlpool Galaxy, a stunning spiral in the constellation canes venatici. [C95]
M81 ...
Mathieu and colleague Aaron Geller report their observations of an old, open star cluster NGC 188, which hosts 21 blue stragglers. They used the 3.
File:Pleiades Lanoue.pngIn astronomy, the Pleiades are an open star cluster in the constellation of Taurus . It is among the nearest star clusters to Earth, and Randall Munroe's favorite astronomical object....
cluster
Open cluster ...
ShareHovering about the galactic plane and locked in the embrace of a spiral galaxy's arms, open star clusters usually contain up to a few hundred members and generally span around thirty light years across.
He found one new globular cluster, 5 new open star clusters, one new supercluster of 1,800 galaxies and several new small galaxy clusters, one new comet, about 775 new asteroids, but no new planet except Pluto.
Deep Sky Objects in Monoceros: NGC 2237, a large diffuse nebula ("Rosette Nebula") which engulfs the open star cluster NGC 2244 (see below).
(Added 06/01/04) The Pleiades, an open star cluster, has had a controversy surrounding its distance for the past seven years - ever since the European Hipparcos satellite measured a distance to it 10% shorter than the previously accepted distance.
LUPUS
Lupus (the wolf) is a in the Southern Hemisphere. It is located between Centaurus to the west, Scorpius to the northeast. The open star cluster NGC 5822 is in Lupus.
LUPUS
Lupus (the wolf) is a constellation in the Southern Hemisphere. It is located between Centaurus to the west, Scorpius to the northeast. The open star cluster NGC 5822 is in Lupus.
They contain an inconsiderable amount of interstellar matter, no young stars (consisting of old, Population II stars), and no open star clusters.
 See also: Star Cluster, Open, Cluster, Star, Constellation
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