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| Messier 4 in the constellation Scorpius. Credit: COAST Robotic Telescope, Open University, Open Observatories, telescope.org |
" This rather beautiful globular star cluster appears in our sky during mid-summer but very low and near to the southern horizon. The above image was captured recently, using the COAST robotic telescope, located much further south and at altitude on the island of Tenerife. The data was collected through BVR and Clear filters and was put together and processed, here at the Jodrell Plank Observatory, using Affinity Photo2 software.
A globular star cluster is a ball of ancient stars held together by gravity and usually located on the outer fringes of galaxies. Messier 4 is 75 light years across, approximately 6000 light years distant and as such is the nearest globular star cluster to the Earth. At the cluster's centre there may exist a black hole. Some of the oldest white dwarf stars in our galaxy reside in this cluster" - Joel Cairo CEO of the Jodrell Plank Observatory.
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