NGC1097 (John Dziuba)

NGC1097

NGC1097 is a barred spiral galaxy about 45 million light years away from us in the Fornax constellation. It is interacting with a companion galaxy, the blob visible in the upper right quadrant. This interaction is causing clear tidal distortion in the galaxy's outer band.

There are four visible narrow optical jets emanating from the galaxy's nucleus. The lack of hydrogen gas in these features leads to the current theory that these are not tidal tails as is commonly observed, but rather stars that have been ejected from the system. The theory suggests that these stars are the shattered remnants of an unfortunate dwarf galaxy that was long ago cannibalized by NGC1097.

A bright ring is visible around the center. This ring is an intense star forming region which is caused by the supermassive black hole at the center drawing in and concentrating material. The ring is approximately 5,000 light-years in diameter and the spiral arms of the galaxy extend tens of thousands of light-years beyond the ring.

Processing was actually a huge challenge. Bringing out the colors while maintaining a natural appearance was tough. Also choosing the right continuum reduction for the rather faint Ha data and then the extent to which it is blended in to the RGB data took many hours of trial and error.

Unfortunately, a busy work schedule meant that I did not have as much time to spend on this one as I usually do. So, this result is more of a resignation than a completion. I believe I could still improve the color and detail in the core, but will have to leave that for another project.

Hope you like it

CS

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F
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G

Fine Art Astrophotography
GHS Made a Substantial Difference
Southern Hemisphere Astro
Takahashi Refractors
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Status	Advanced success
Started	...
Astrometry.net job	8945402
PixInsight job	GWH877HVM3S41U7547WYP9P15DXCMDTX
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h46m24s.330
RA (top/left)	02h47m28s.242
RA (top/right)	02h45m21s.530
RA (bottom/right)	02h45m19s.550
RA (bottom/left)	02h47m26s.741

Dec (center)	-30°14′38″.58
Dec (top/left)	-30°03′56″.84
Dec (top/right)	-30°03′28″.42
Dec (bottom/right)	-30°25′18″.49
Dec (bottom/left)	-30°25′46″.89

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