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NGC 7640 with Faint Foreground Cirrus

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#1 Jim Thommes

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Posted 18 March 2023 - 11:35 PM

NGC 7640 is a barred galaxy close to edge-on - SB(s)c. It lies in a relatively dense foreground star field along with some faint cirrus. NGC 7640 is about 26 million light years distant by Tully-Fisher estimate and about 26.8 million light years (by redshift estimate).   

 

There are a number of background galaxies - one identified by PGC ID others by 2MASS - none have distance estimates. There are a number of other visible background galaxies, but they are only identified as IR sources. The visible Quasars are are from 4.279 to 9.165 billion years (Lookback or light travel time).

 

Image and details can be accessed at the link below (or by clicking on the image crop below). The annotated image has a link below but it can also be accessed from the main image webpage as well - or seen on astrobin. The full FOV image can be accessed from the image webpage and has an image scale of about 0.59 arcsec/pixel.
 

NGC7640_Edge7_PI1_AF3_small.jpg

NGC 7640 Region

 

 

Annotated Image:
NGC 7640 Region Annotated

 

Images also available on astrobin - https://www.astrobin.com/l3tw9y/

 

Scope: Celestron 9.25 Edge HD 235 mm at f/7
Camera: ASI294MM (Baader  LRGB Filters)
Location: DAA Observatory, Shelter Valley, CA


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#2 Astro-Master

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Posted 19 March 2023 - 12:51 AM

Jim,

 

Nice image of NGC 7640



#3 Mert

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Posted 19 March 2023 - 04:30 AM

That's a great image Jim, beautiful colors and detail.
The distance estimates by the 2 different methods match quite well!

#4 bernhardhubl

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Posted 19 March 2023 - 12:44 PM

Hello Jim,

 

Nice image of this galaxy including faint cirrus!

 

best,

Bernhard



#5 Jim Thommes

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Posted 19 March 2023 - 09:08 PM

Thanks for the comment folks!




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