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Thursday, November 26, 2009

Older photos with DSLR - Clusters

M13 Globural Cluster & NGC6207 Galaxy
Skywatcher ED80 - Canon 400D - HEQ5 Pro



Messier 13 or M13 (also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster) is a globular cluster in the constellation of Hercules.M13 is about 145 light-years in diameter, and it is composed of several hundred thousand stars, the brightest of which is the variable star V11 with an apparent magnitude of 11.95. M13 is 25,100 light-years away from Earth.


NGC 884 & NGC 869 - The Double Cluster in Persei
Skywatcher ED80 - Canon 400D - HEQ5 Pro



The Double Cluster is the common name for the naked-eye open clusters NGC 884 and NGC 869, which are close together in the constellation Perseus. NGC 884 and NGC 869 are at distances of 7600 and 6800 light-years away, respectively, so they are close to one another in space as well. They are relatively young clusters, with NGC 869 5.6 million years and NGC 884 at 3.2 million years according to the 2000 Sky Catalogue.


M4 - Globural Cluster
Skywatcher ED80 - Canon 400D - HEQ5 Pro



Messier 4 or M4 (also designated NGC 6121) is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1746 and catalogued by Charles Messier in 1764. It was the first globular cluster in which individual stars were resolved.M4 is a rather loosely concentrated cluster of class IX and measures 75 light years across.


M45 - Pleiades Open Cluster
Skywatcher ED80 - Canon 400D - HEQ5 Pro


M13 Globural Cluster & NGC6207 Galaxy
Skywatcher ED80 - Canon 400D - HEQ5 Pro

In astronomy, the Pleiades, or Seven Sisters (Messier object 45), is an open star cluster containing middle-aged hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. Pleiades has several meanings in different cultures and traditions.

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