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Hoag's Object, 


            Frank Zoltowski
Hoag's Object

Hoag's Object

Technical card

Resolution: 1780x1264

Astrodon E Series Gen 2 B: 12x360" -25C bin 1x1
Astrodon E Series Gen 2 G: 12x360" -25C bin 1x1
Astrodon E Series Gen 2 L: 31x240" -25C bin 1x1
Astrodon E Series Gen 2 R: 12x360" -25C bin 1x1

Integration: 5.7 hours job: 1244002

RA center: 229.314 degrees

DEC center: 21.586 degrees

Pixel scale: 0.397 arcsec/pixel

Orientation: 0.633 degrees

Field radius: 0.120 degrees

Locations: Tebbutt Observatory, Edgewood, New Mexico, United States


Hoag's Object, also known as PGC 54999 is a rare ring galaxy approximately 600 million light years away. The galaxy is named after Arthur Hoag who initially thought is was a planetary nebula or an “Einstein Ring” from a quasar. But later spectroscopic studies show that both the core and ring have the same redshift, hence the same distance. The core consists of older stars, while the 45 arc second diameter ring contains younger hot blue stars. The diameter is slightly larger than the Milky Way.



Frank Zoltowski
License: Attribution-NonCommercial-ShareAlike Creative Commons

Sky plot

Sky plot


Hoag's Object, 


            Frank Zoltowski