M45 = Pleiades ( 3h 47.0m +24°07´, 1.2 mag. )
Pleiades were known since antiquity and featured in (among others) Greek myths. Messier included this nearby open cluster in Taurus in his catalogue anyway - he listed it on March 4, 1769.
M45, the Pleiades
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.
M45 The Pleiades
Description: The Seven Sisters, or Subaru (open cluster)
Constellation: Taurus
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M45 is an object that has been known since the earliest times. Most commonly known as the Pleiades, it is a galactic cluster of about 500 young stars located within the constellation of Taurus.
Image of M45, The Pleiades star cluster, by kind permission of Graham Pattison who acquired the image and provided the following information: ...
The Pleiades (M45), a young star cluster
The basic difference between a star and a planet is that a star emits light produced in its interior by nuclear 'burning', whereas a planet only shines by reflected light.
M45 (Pleiades)
M50 (NGC 2323)
M51 (NGC 5194, Whirlpool Galaxy)
M57 (NGC 6720, Ring Nebula)
M63 (NGC 5055, Sunflower Galaxy)
M64 (NGC 4826, Black Eye Galaxy)
M74 (NGC 628, spiral galaxy)
M76 (NGC 650, Little Dumbbell Nebula) ...
Charles Messier measured the position of the cluster and included it as M45 in his catalogue of comet-like objects, published in 1771.
databases combine the many catalogue designations an object might have, so that a search for the Pleiades will also find papers which list the famous open cluster in Taurus under any of its other catalogue designations or popular names, such as M45, ...
Most famous in this constellation are certainly the Pleiades (also called "Seven Sisters"), M45.
(pl´dz, pl´-), in astronomy, famous open star cluster in the constellation Taurus; cataloged as M45. The cluster consists of some 500 stars, has a diameter of 35 light-years, and is 400 light-years distant from the earth.
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.
The Pleiades Open Cluster, M45.
Where in the galaxy would you typically expect to find open clusters like the Pleiades?
Perseus lies between the Pleiades (M45), the distinctive naked-eye star cluster in Taurus, and Cassiopeia and it rises just before Andromeda.
It contained objects M1-M45. The first supplement included up through M68 and was published in the Connaissance des Temps for 1783 (published in 1780). M69 and M70 were added in a separate contribution to the end of the same volume.
The Pleiades (M45), also known as the "Seven Sisters" (and "Subaru" in Japan), is the brightest open cluster of stars in the sky. It is located in the constellation Taurus. Six of the stars in the Pleiades are visible without a telescope.
M1 The Crab Nebula (supernova remnant)
M45 The Pleiades (The Seven Sisters), or Subaru (open cluster)
This is one of the 13 constellations of the Zodiac.
Taurus is one of the many animals hunted by Orion, the Hunter.
The Pleiades is also known by its Messier catalogue number, M45. Although nicknamed the Seven Sisters (map identifying stars of the Pleiades), M45 is actually formed by over 100 stars.
Figure 17.23 (a) The Pleiades cluster (also known as the Seven Sisters, or M45) lies about 120 pc from the Sun. The naked eye can see only its brightest stars. (b) The stars of this well-known open cluster yield an H"R diagram.
The Orion Nebula, a star-forming region in the constellation Orion. [C95]
M45
The Pleiades, a beautiful open star cluster in the constellation Taurus. It is 410 light-years away. [C95]
M51 ...
Infrared Astronomy
Nebulae
Pleiades Cluster, M45
Spitzer Space Telescope ...
Your best way of finding it is if there are major planets in it that you can work around. Failing that, a line from Aldeberan in Taurus through the Pleiades (M45) will clip the left-hand side of Aries through a red 4th magnitude star, ...
Bright nebulosity in the Pleiades (M45, NGC 1432), distance 490 light-years.[Credit: Hale Observatories ©1961]
Horsehead Nebula[Credit: © Anglo-Australian Observatory]
Milky Way Galaxy as seen from Earth[Credit: © Dirk Hoppe] ...
about a few hundred stars, the stars are mainly younger stars. The typical diameter of an open cluster is less than 100 light years. They are called open because their stars are relatively far apart and their shapes are irregular. An example is M45 ...
M78 and the Merope nebula in M45 (both reflection nebulae) did not improve at all with the OIII filter as expected, and finally the Rosette nebula was invisible from the city, even with the filter, probably due to the overwhelming light pollution.
 See also: Cluster, Pleiades, Star, Star Cluster, Light
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