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NGC5128 - VC200L
NGC5128 - Galaxy Centaurus A
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Centaurus A (also known as NGC
5128) is a lenticular galaxy about 14 million
light-years away in the constellation Centaurus.
It is one of the closest radio galaxies to Earth,
so its active galactic nucleus has been
extensively studied by professional astronomers.
The galaxy is also the fifth brightest in the sky,
making it an ideal amateur astronomy target,
although the galaxy is only visible from low
northern latitudes and the southern hemisphere.
A relativistic jet which
extracts energy from the vicinity of what is
believed to be a supermassive black hole at the
centre of the galaxy is responsible for emissions
in the X-ray and radio wavelengths. By taking
radio observations of the jet separated by a
decade, astronomers have determined that the inner
parts of the jet are moving at about one half of
the speed of light. X-rays are produced farther
out as the jet collides with surrounding gases
resulting in the creation of highly energetic
particles.
As observed in other starburst
galaxies, a collision is responsible for the
intense burst of star formation. Using the Spitzer
Space Telescope scientists confirm that Centaurus
A is going through a galaxy collision by devouring
a spiral galaxy.
the new objects
text here..
(From Wikipedia, the free encyclopaedia)
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Exposure Data
 | Instrument: Vixen VC200L |
| F/stop: 9 |
| Exposure: 5 x 5min |
| Camera: Hutech Canon EOS 40D DSLR |
| Sensitivity: ISO 1600 |
| Mount: Skywatcher EQ6 Pro |
| Date: March 28, 2009 |
| Exposure start: |
| Location: Heathcote, Victoria |
| Autoguider: Orion ED80 + DSI 2 + PHD Guiding |
| Enhancement: Stacked with Deep Sky Stacker,
Adobe Photoshop CS2. |
| Notes: Very poor alignment on the night, but
this objects relative position in sky was favourable for
the PHD Guiding to compensate for the bad alignment. |
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