Open star cluster NGC7789 in constellation Cas
This is a 300mm shot of the dazzling star cluster NGC 7789, or Caroline's Rose, as it is more poetically named after its discoverer, Caroline Herschel. The open cluster in Cassiopeia, according to some sources, is about 8000 light-years away. As open clusters go, it is very old, 1.6 billion years. The picture also shows that it is incredibly rich. In winter it can be found high up in the sky with almost every instrument, even small binoculars. [Released December 9, 2019]
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