Hemisphere:  Southern  ·  Constellation: Reticulum (Ret)  ·  Contains:  NGC 1313  ·  NGC1313

Image of the day 11/25/2018

Getting plate-solving status, please wait...
Topsy Turvy galaxy through IFN, 



    
        

            Geoff
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Topsy Turvy galaxy through IFN

Image of the day 11/25/2018

Getting plate-solving status, please wait...
Topsy Turvy galaxy through IFN, 



    
        

            Geoff
Powered byPixInsight

Topsy Turvy galaxy through IFN

Imaging telescopes or lenses: Plane Wave Instruments CDK 12.5"

Imaging cameras: Finger Lakes Instruments Proline 16803

Mounts: AP900GTO

Guiding telescopes or lenses: Plane Wave Instruments CDK 12.5"

Guiding cameras: Starlight Xpress Lodestar guide camera

Software: PixInsight  ·  MaximDL

Filters: Astronomik L R G B H alpha Series II


Dates:Nov. 8, 2018Nov. 9, 2018Nov. 10, 2018

Frames:Astronomik L R G B H alpha Series II: 72x600" (12h) bin 1x1

Integration: 12h

Avg. Moon age: 1.81 days

Avg. Moon phase: 4.29%


Astrometry.net job: 2381283

RA center: 3h 18' 57"

DEC center: -66° 34' 26"

Pixel scale: 0.729 arcsec/pixel

Orientation: -91.254 degrees

Field radius: 0.574 degrees


Resolution: 3971x4033

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

Data source: Traveller

Description

NGC 1313 (also known as the Topsy Turvy Galaxy) is an isolated barred spiral galaxy discovered by James Dunlop in 1826. It has a diameter of about 50,000 light-years, or about half the size of the Milky Way. It has a strikingly uneven shape and its axis of rotation is not exactly in its centre. There is also strong starburst activity and associated supershells. The galaxy is dominated by scattered patches of intense star formation, which gives it a rather ragged appearance. The uneven shape, the ragged appearance and the strong starburst can all be explained by a galactic collision in the past. However, NGC 1313 is an isolated galaxy with no direct neighbours, so the source of the disturbance is unclear. Possibly it has swallowed a small companion in the past.

There is also integrated flux nebulosity (IFN) throughout the field. This is an extremely faint glow caused by the combined light of the stars of the Milky Way reflected and re-emitted by interstellar gas and dust. It’s most easily seen in images far from the plane of the Milky Way.

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Topsy Turvy galaxy through IFN, 



    
        

            Geoff