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Contains:  NGC 474, NGC 470, NGC 467
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Arp 227 NGC 474

Technical card

Resolution: 4087x2721

Frames:
Astrodon Blue: 63x300" bin 2x2
Astrodon Green: 64x300" bin 2x2
Astrodon Lum: 54x1800" bin 1x1
Astrodon Red: 54x300" bin 2x2

Integration: 42.1 hours

Astrometry.net job: 2967628

RA center: 19.905 degrees

DEC center: 3.337 degrees

Pixel scale: 0.534 arcsec/pixel

Orientation: 356.880 degrees

Field radius: 0.364 degrees

Locations: e-Eye, Fregenal de la Sierra, Extramadura, Spain

Data source: Own remote observatory

Remote source: e-EyE Extremadura

Description

An unusual group of galaxies i(ARP 227) in the constellation of Pisces. Outer shells may have been created from gravitational interaction between galaxies. The largest galaxy is NGC 474. It is 100 million light years away, and about 250,000 light years across. The outer shells are extremely faint and have necessitated 1800s luminance exposures.

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Author

PeterGoodhew
Peter Goodhew
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Arp 227 NGC 474, 





    
        

            Peter Goodhew