Re: Two unusual galaxies


Bernard Miller
 

Nice work Gregg. You and Dan seem to be in a contest to see who can image the smallest galaxy 😊

 

Bernard

 

 

-----Original Message-----
From: DarkSkyNewMexico@groups.io On Behalf Of Gregg Ruppel
Sent: Thursday, February 25, 2021 11:32 AM
To: undisclosed-recipients:
Subject: [DarkSkyNewMexico] Two unusual galaxies

 

Hi all:

 

UGC 6446 and NGC 3658 are two galaxies about 30 arcminutes apart, just below the bowl of the Big Dipper.  UGC 6446 is a low surface brightness irregular galaxy (that appears spiral-like to me).  NGC 3656 (on the right side of this image) is also Arp 155, cataloged as "disturbed with interior absorption".  It's companion is magnitude 15 MCG+9-19-64 just a couple of arcminutes to the east:

 

http://www.greggsastronomy.com/IMAGES/ugc6446-LRGB.jpg

 

1.3X crop of UGC 6446:

http://www.greggsastronomy.com/IMAGES/ugc6446-LRGBcrop.jpg

 

LRGB, 7.5 hours total exposure.

 

--

Clear skies,

 

Gregg

Visit my astronomy & astrophotography site http://www.greggsastronomy.com/

 

 

 

 




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