Celestial hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  IC 803
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Arp 149, 



    
        

            Gary Imm
Arp 149, 



    
        

            Gary Imm

Arp 149

Getting plate-solving status, please wait...
Arp 149, 



    
        

            Gary Imm
Arp 149, 



    
        

            Gary Imm

Arp 149

Acquisition details

Dates:
May 8, 2021 ·  May 9, 2021
Frames:
Astrodon Gen2 I-Series Tru-Balance Blue: 30×120(1h) (gain: 120.00) -20°C bin 2×2
Astrodon Gen2 I-Series Tru-Balance Green: 30×120(1h) (gain: 120.00) -20°C bin 2×2
Astrodon Gen2 I-Series Tru-Balance Lum: 60×120(2h) (gain: 120.00) -20°C bin 2×2
Astrodon Gen2 I-Series Tru-Balance Red: 30×120(1h) (gain: 120.00) -20°C bin 2×2
Integration:
5h
Avg. Moon age:
27.02 days
Avg. Moon phase:
7.17%

RA center: 12h39m36s.721

DEC center: +16°3515.84

Pixel scale: 0.343 arcsec/pixel

Orientation: 0.939 degrees

Field radius: 0.116 degrees

More info:Open 

Resolution: 2013x1369

File size: 726.4 KB

Locations: Backyard (Mag 20.8 - Bortle 4.5), Onalaska, Texas, United States

Data source: Backyard

Description

This Astrobin Debut Object is a pair of interacting galaxies located 370 million light years away in the constellation of Coma Berenices at a declination of +17 degrees. In his Arp catalog, Dr. Arp classified this object into the category of Galaxies with Jets, although I don't see any jets here.

This magnitude 15 object spans 1.3 arc-minutes in our apparent view, which corresponds to a width of 140,000 light years. The galaxy on the left is IC 803, with an orange core and blue star clusters at the left and right edges. The galaxy on the right is LEDA 215034, with a bright white core.

This structure is fascinating. Both galaxies appear edge-on to us and form a perfect arc. A star stream bridge connects the 2 disks. This object reminds me a bit of Arp 193, although the galaxy cores of this object have more separation.

The orange edge-on galaxy immediately to the right and below Arp 149 is galaxy 2MASX J12393224+1634410. It is much further away, at almost 1 billion light years.

I find it very odd that so many edge-on galaxies, at least 7, are seen in this image.

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