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Contains:  NGC 467, NGC 470, NGC 474, NGC467, NGC470, NGC474
Getting plate-solving status, please wait...

Imaging telescopes or lenses: APM Telescopes TMB - LZOS Apo refractor 152/1200

Imaging cameras: QSI 6120wsg-8

Mounts: 10Micron GM2000HPS II

Guiding cameras: Starlight Xpress Lodestar Autoguider X2

Filters: Astrodon Blue  ·  Astrodon Lum  ·  Green  ·  Red  ·  Astrodon SII 5nm  ·  Astrodon OIII 3 nm  ·  Astrodon 5nm H-Alpha filter

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

Integration: 42.1 hours job: 2967628

RA center: 1h 19' 37"

DEC center: +3° 20' 14"

Pixel scale: 0.533 arcsec/pixel

Orientation: 3.128 degrees

Field radius: 0.364 degrees

Resolution: 4087x2721

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

Data source: Own remote observatory

Remote source: e-EyE Extremadura


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.



Peter Goodhew


Sky plot

Sky plot


Arp 227 NGC 474, 


            Peter Goodhew