Celestial hemisphere:  Southern  ·  Constellation: Canis Major (CMa)  ·  Contains:  IC 2163  ·  NGC 2207
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NGC 2207 and IC 2163, 



    
        

            Gary Imm
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NGC 2207 and IC 2163

Getting plate-solving status, please wait...
NGC 2207 and IC 2163, 



    
        

            Gary Imm
Powered byPixInsight

NGC 2207 and IC 2163

Acquisition details

Dates:
Feb. 1, 2020 ·  Feb. 2, 2020
Frames:
Astrodon Gen2 I-Series Tru-Balance Blue: 60×60(1h) (gain: 139.00) -20°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Green: 60×60(1h) (gain: 139.00) -20°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Lum: 120×60(2h) (gain: 139.00) -20°C bin 1×1
Astrodon Gen2 I-Series Tru-Balance Red: 60×60(1h) (gain: 139.00) -20°C bin 1×1
Integration:
5h
Avg. Moon age:
7.32 days
Avg. Moon phase:
49.36%

RA center: 06h16m24s.100

DEC center: -21°2222.59

Pixel scale: 0.402 arcsec/pixel

Orientation: -5.002 degrees

Field radius: 0.231 degrees

More info:Open 

Resolution: 3171x2645

File size: 3.4 MB

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

Data source: Backyard

Description

This object is a pair of colliding spiral galaxies located 120 million light-years away in the southern constellation of Canis Major at a declination of -21 degrees. This object spans 4.7 arc-minutes in our apparent view, which corresponds to a width of 165,000 light years. I am really puzzled why this object was not selected for the Arp catalog.

The larger galaxy ( NGC 2207) is an intermediate spiral galaxy and the smaller companion galaxy (IC 2163) is a barred spiral galaxy. The smaller galaxy has an elongated arm to the left, likely due to gravitation interaction with the larger galaxy. The galaxy cores are separated by 50,000 light years. A dust lane from NGC 2207 is visible in front of the core of IC 2163, which is confirmation that the larger galaxy is the nearer object.

The galaxies are surrounding by a bright and colorful star field. Bluish star clusters and dark dust lanes are evident throughout. Since both galaxies are still intact, they appear to be in the early stages of merging.

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