25hr NGC3199 RGBHOS Powerful Stellar Winds (Jeff Weiss)

Celestial hemisphere: Southern · Constellation: Carina (Car) · Contains: NGC 3199

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25hr NGC3199 RGBHOS Powerful Stellar Winds

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25hr NGC3199 RGBHOS Powerful Stellar Winds

NGC 3199 lies about 12,000 light-years away, a glowing cosmic cloud (emission nebula) in the southern constellation of Carina. The nebula is about 75 light-years across ..and more or less a complete ring shape, with one much brighter edge. ... Near the center of the ring is a Wolf-Rayet star, (WR-18 ), a massive, hot, short-lived star that generates an intense stellar wind. In fact, Wolf-Rayet stars are known to create nebulae with interesting shapes as their powerful winds sweep up surrounding interstellar material .. in a bow shock produced as the star plowed through a uniform medium. But measurements have shown the star is not really moving directly toward the bright edge. So a more likely explanation is that the material surrounding the star is not uniform, but clumped and denser near the bright edge of windblown NGC 3199. [Excerpts from NASA APOD write-up from 2008]:

This is a 25.3 hr RGBHOS image taken at DeepSkyWest Chile 14-28 February 2021 and processed here 27 April 2021. It is HOS with RGB stars. With the HOS color mapping to RGB, the main colors in the image have the following emission line content:

Yellow = Ha + SII

Cyan = SII + OIII

Magenta = Ha + OIII

Original
B
C
Final
E

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Status	Advanced success
Started	...
Astrometry.net job	4470474
PixInsight job	XVREQVCF78RLTESDZ7P4X930GVG5ZYJF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	10h17m19s.46
RA (top/left)	10h19m26s.33
RA (top/right)	10h15m29s.92
RA (bottom/right)	10h15m11s.30
RA (bottom/left)	10h19m10s.43

Dec (center)	-57°55′04″.6
Dec (top/left)	-57°44′02″.1
Dec (top/right)	-57°41′09″.8
Dec (bottom/right)	-58°05′59″.3
Dec (bottom/left)	-58°08′54″.1

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25hr NGC3199 RGBHOS Powerful Stellar Winds

25hr NGC3199 RGBHOS Powerful Stellar Winds

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25hr NGC3199 RGBHOS Powerful Stellar Winds

25hr NGC3199 RGBHOS Powerful Stellar Winds

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