Jacoby 1 Planetary Nebula (Albert Christensen)

Celestial hemisphere: Northern · Constellation: Boötes (Boo)

Jacoby 1 Planetary Nebula, Albert Christensen

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Jacoby 1 Planetary Nebula

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Jacoby 1 Planetary Nebula

Just discovered in 1995. Jacoby 1 is an ancient planetary nebula of exceedingly low surface brightness, ejected by an ultra-hot white dwarf star with a temperature of 140 000 degrees Kelvin on its exterior.

Planetaries, so called because their generally round shapes reminded early observers of planets, represent a late stage in the evolution of Sun-like stars from red giant to white dwarf. Powerful stellar winds emanating from the star's core blow away its outer layers, creating an expanding shell of gas and dust.

The remaining core, compressed and heated to more than 46,000°F (26,000°C) becomes a white dwarf.

The planetary nebula phase is brief, lasting only around 10,000 years before the cast-off cloak become so distended it fades from view. Only the lonely white dwarf and whatever planets it might still possess soldier on. Such will be the fate of the Sun, one of the reasons that observing planetaries gives pause to reflect on the future of our own Solar System. (Internet)

I was attracted by the challenge of a very low surface brightness exhibited by several gorgeous captures presented in Astrobin. It's very available circumpolar location makes it a good target for my location this time of the year.

It also gave the opportunity to try to isolate the cause for some strange gradients which had shown previously with my favorite O3 filter. (At this point the main cause for the gradients seems to result from poor flats.)

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Description: Reprocess with new flats.

Uploaded: ...

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Description: Reprocess

Uploaded: ...

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Basic success
Started	...
Astrometry.net job	7835874
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Jacoby 1 Planetary Nebula

Jacoby 1 Planetary Nebula

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Image Index:

Contribution Index (beta):

Jacoby 1 Planetary Nebula

Jacoby 1 Planetary Nebula

Equipment

Acquisition details

Description

Comments

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E

Sky plot

Histogram

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