Astrobin: https://www.astrobin.com/lniuig/D/ According to Markarian in “Physical Chains of Galaxies in the Virgo Cluster and Its Dynamic Instability”, The Astronomical Journal, vol.66, n.10 – December…
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ACO 2197 Group region in Hercules
A mind-blow cropped detail about ACO 2197 Galaxies group region in Hercules with focus on NGC6180, NGC6175, NGC6174, NGC6173, NGC6160, NGC6160, NGC6146, NGC6147 and NGC6145.…
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