Globular Cluster in the constellation of Aquarius.
Image:
Abstract:
Globular Cluster in the constellation of Aquarius.
This cluster is about 37500 light-years distnat from Earth and it is at 175 light-years in diameter, so it is one of the larger globular clusters known. It is 13 billion years old and one of the older globulars associated with Milky Way. The cluster is compact and rich in stars, about 150000, inluding 21 known variable stars.
Photograph: combination o a serie of 3x120 second images on each of the Johnson BVR filters taken with the T150 telescope.
