The galaxy cluster Abell 21
Red-band image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Fairfield , Abell 21 is visible in the dawn sky, rising at 21:24 (EDT) – 8 hours and 14 minutes before the Sun – and reaching an altitude of 71° above the south-eastern horizon before fading from view as dawn breaks around 04:16.
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Name
Abell 21
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Object Type
Galaxy Cluster
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