Observation by Graeme Coates: Abell 1656 - The Coma Cluster

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Graeme Coates


Graeme Coates


2021 Mar 01 - 00:00


2021 Mar 23 - 10:52


The Coma Cluster (Abell cluster 1656)

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Coma Berenices

Field centre

RA: 12h59m
Dec: +27°57'
Position angle: -94°37'

Field size

2°27' × 1°48'

  • Skywatcher Esprit 80ED
  • MI-250
  • STF-8300M
  • Baader Filters

22.5hrs total (75x10m L, 20x10m RGB)



Target name

Abell 1656


Abell 1656 - The Coma Cluster

About this image

Abell 1656 - The Coma Cluster is a large cluster of galaxies in the direction of Coma Berenices, containing upwards of 1000 identified galaxy members at an average distance of about 320 million light years (99Mpc). This a wide field view of the cluster - there are 84 entries in the NGC/IC catalogues in this field alone, as well as a further 838 objects in the PGC/LEDA catalogue - and an almost uncountable number of further fainter objects in the background. Worth having a look at the enlarged image to explore the background!

Image acquisition: P Tribe, G Coates (Jan/Feb/Mar 2021)

Processsing: G Coates

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