M10 (globular cluster)
See also: M10
M10 is a globular Amas located in the constellation of Ophiuchus discovered by Charles Messier in 1764. It was solved in stars by William Herschel.
Characteristic
The cluster is one of closest to the Solar system since it is located only at 14 300 light-years. In spite of a modest diameter of only 60 light-years, its apparent diameter is thus raised and is equivalent enough to half of that of the Full moon. The cluster is very low in variable stars, it contains only 3 of them. The most brilliant stars of the cluster have a Magnitude connect of 13.
Observation
Because of its magnitude of 6,6, the cluster is easily visible with the Jumelles in the shape of a milky spot. It keeps the same aspect in a Lunette of 60 Misters Starting from an instrument 150 mms in diameter, the cluster starts to be solved out of stars and has a granulous aspect then. A Télescope of 200 mm makes it possible to have a beautiful vision of it.
External bond
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