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The sombrero galaxy is not always the one you think...

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#1 bertandlaville

bertandlaville

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Posted 19 March 2020 - 03:07 PM

Hi All,

 

All of us know perfectly M 104, the sombrero galaxy.

But I'm not sure everybody knows Abell 70.

 

The number 70 of the Abell catalogue is a very strange object: the large and faint ring of a planetary nebula AND a little galaxy exactly on line of view of it.

And cherry on the cake (in this case, it's the very right expression), the galaxy is on the top of the ring, slightly leaned on one side, looking as a sombrero on a round head !

 

If you look at it without filter, the ring is almost rubbed, and if you use an OIII filter the galaxy vanishes.

Here is how I saw it with my 25" dobson: http://www.deepsky-d...l-70/dsdlang/fr

 

Clear sky

Bertrand

http://www.deepsky-drawings.com/

 

P.S.  Oups ! The yellow numbers must be inverted in the first and second view. 

Attached Thumbnails

  • Abell 70  T635 PN vs Glx.jpg

Edited by bertandlaville, 19 March 2020 - 03:17 PM.

  • frank5817, Astrojensen, Jef De Wit and 10 others like this

#2 cloudbuster

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Posted 19 March 2020 - 03:23 PM

Tried it once (in Obterre in France smile.png ) but I could not see the galaxy... Even the planetary itself was very weak and on the verge of visibility.

 

Thanks for sharing your beautiful comparison, now I know better what to look for next time.

 

Regards, Martijn



#3 Asbytec

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Posted 21 March 2020 - 12:52 AM

Oh, wow! I may have to try it, even is futile. That looks like something to see. Thanks, Bertrand. 




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