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Star Clusters



Pleiades. Canon 7D Mark II, 500mm f4, tracked with Astro Trac.
Ten one minute exposures, images stacked in Deep Sky Stacker


The orange star is Antares, a giant star in the constellation Scorpius. There are large interstellar dust clouds visible in the image. If Antares was placed where our sun is, it would fill the solar system out to Mars. This was with a 500mm, f4.5, ISO 1600. The two star clusters are M4 and NGC 6144.


Omega Centauri, a very large star cluster, it is about 150 light years in diameter
and contains an estimated 10 million stars, located 15,800 light years from Earth.


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