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Contains:  NGC 5189
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Spiral Planetary, NGC 5189, 





    
        

            Geoff
Spiral Planetary, NGC 5189

Spiral Planetary, NGC 5189

Technical card

Resolution: 1926x1548

Dates:June 20, 2015

Frames: 40x600"

Integration: 6.7 hours

Avg. Moon age: 3.82 days

Avg. Moon phase: 15.60%

Astrometry.net job: 679386

RA center: 203.404 degrees

DEC center: -65.975 degrees

Orientation: 1.940 degrees

Field radius: 0.251 degrees

Locations: Wiruna Dark Sky Site, Ilford, NSW, Australia

Description

NGC 5189 (also Gum 47, IC 4274 and nicknamed the Spiral Planetary Nebula) is a planetary nebula in the constellation Musca. It was discovered by the Scottish Australian astronomer James Dunlop in 1 July 1826. For many years, well into the 1960s, it was thought to be a bright emission nebula. It was Karl Gordon Henize in 1967 who first described NGC 5189 as quasi-planetary based on its spectral emissions.

Seen through the telescope it seems to have an S shape, reminiscent of a barred spiral galaxy.
The unusual shape appears consistent with a hypothesis that the dying central star is part of a binary star system with a precessing symmetry axis. NGC 5189 spans about three light years and lies about 3,000 light years away toward the southern constellation of Musca.

Comments

Author

Geoff
Geoff
License: None (All rights reserved)
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Revisions

  • Spiral Planetary, NGC 5189, 





    
        

            Geoff
    Original
  • Final
    Spiral Planetary, NGC 5189, 





    
        

            Geoff
    B

Sky plot

Sky plot

Histogram

Spiral Planetary, NGC 5189, 





    
        

            Geoff