SH2-71 Planetary Nebula (Albert Christensen)

Celestial hemisphere: Northern · Constellation: Aquila (Aql)

SH2-71 Planetary Nebula, Albert Christensen

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SH2-71 Planetary Nebula

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SH2-71 Planetary Nebula

Discovered in 1946 by Rudolph Minkowski, Sharpless 2-71 (Sh2-71) is located in the direction of the constellation Aquila. Apparent size: 2 arc min... Magnitude: 14.0...Distance: 3,260 Light Years

For most of its recorded history, astronomers assumed that the nebula formed from the death throes of an obvious bright star (a known binary system) near its center. Arguments against that claim, however, have turned this case into a classic mystery of uncertain parentage.

The image shows the long-assumed central star shining as the brightest object very close to the center of the nebula’s beautiful gas shell. But new observations have shown that the nature of a dimmer, bluer star – just to the right, and a bit lower than the obvious central star – might provide a better fit for the nebula’s “birth parent.”

The uncertainty arises from the fact that the brighter central star doesn’t appear to radiate enough high-energy (ultraviolet) light to cause the surrounding gas to glow as intensely as it does, whereas the dimmer, bluer star likely does. (Wikipedia) - Unfortunately the blue star does not show in my image.

I am presenting the early data from the short summer evening to go to bed and wait for the Astrospheric weather forecast to inform me when the next clear evening will arrive. RGB star data and perhaps also Ha and O3 time is desired.

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Astrometry.net job	5918030
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SH2-71 Planetary Nebula

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SH2-71 Planetary Nebula

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