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Abell 1656, the Coma galaxy cluster

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#1 fmeschia

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Posted 18 May 2021 - 04:28 PM

Abell 1656 is a large cluster of galaxies found in the direction of the constellation Coma Berenices, at over 300 million light years from us. It is known to have over 1000 galaxies in it, about 500 of which are visible in this image of mine.

This cluster is well known for being the first one to which Fritz Zwicky applied, in 1933, the virial theorem, finding that the visible matter wasn’t enough to explain for the velocities being observed, and ushering in the idea of some invisible "dark matter", necessary to explain the observed gravitational effects.

 

Full acquisition data, high-res imagery and annotated version (a must see!) are at the Astrobin page. Comments and critique are very welcome.

 

Francesco

 

51188837314_2295c21b32_k_d.jpg


  • Jim Thommes, Ptarmigan, mikefulb and 24 others like this

#2 Hobby Astronomer

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Posted 18 May 2021 - 09:20 PM

Wow!

 

Great image.



#3 lambermo

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Posted 23 May 2021 - 01:16 PM

17h pays off,  looks great.

I like galaxy clusters. And I learned a bit about this one wrt. Zwicky's dark matter remark.

Thanks for posting !



#4 bernhardhubl

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Posted 24 May 2021 - 12:32 AM

Hello Francesco,

 

very nice rendition of the Coma galaxy cluster!

 

best,

Bernhard



#5 fmeschia

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Posted 25 May 2021 - 07:24 PM

Thank you all very much!



#6 andysea

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Posted 26 May 2021 - 09:47 PM

Wonderful image. Out of curiosity, what camera did you use?



#7 fmeschia

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Posted 26 May 2021 - 09:58 PM

Wonderful image. Out of curiosity, what camera did you use?

Thank you! It’s a Lifepixel-modified Nikon D5500.


Edited by fmeschia, 26 May 2021 - 11:00 PM.


#8 Jim Thommes

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Posted 26 May 2021 - 11:40 PM

Nice one Francesco.




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