APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

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APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by APOD Robot » Wed Mar 13, 2013 4:05 am

Image NGC 6751: The Glowing Eye Nebula

Explanation: Planetary nebulae can look simple, round, and planet-like in small telescopes. But images from the orbiting Hubble Space Telescope have become well known for showing these fluorescent gas shrouds of dying Sun-like stars to possess a staggering variety of detailed symmetries and shapes. This composite color Hubble image of NGC 6751, the Glowing Eye Nebula, is a beautiful example of a classic planetary nebula with complex features. It was selected in April of 2000 to commemorate the tenth anniversary of Hubble in orbit, but was reprocessed recently by an amateur as part of the Hubble Legacy program. Winds and radiation from the intensely hot central star (140,000 degrees Celsius) have apparently created the nebula's streamer-like features. The nebula's actual diameter is approximately 0.8 light-years or about 600 times the size of our Solar System. NGC 6751 is 6,500 light-years distant in the high-flying constellation of the Eagle (Aquila).

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by Beyond » Wed Mar 13, 2013 4:12 am

It looks nice... but to me, it just doesn't seem to glow.
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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by inertnet » Wed Mar 13, 2013 9:07 am

The nebula's actual diameter is approximately 0.8 light-years or about 600 times the size of our Solar System
I think that depends on what you consider being part of our Solar System. That statement goes nowhere if you include the Oort cloud.

What orbits at 0.00066667 light-years of our Sun?
Last edited by inertnet on Wed Mar 13, 2013 9:13 am, edited 1 time in total.

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by rstevenson » Wed Mar 13, 2013 11:58 am

"The nebula's actual diameter is approximately 0.8 light-years or about 600 times the size of our Solar System" seems a bit hyperbolic to me too. 0.8 ly = 50,592 AU. The Kuiper Belt has a diameter of roughly 100 AU. So this nebula is roughly 500 times larger than the Kuiper Belt. But if you include the Oort Cloud, with a diameter of anywhere from 10,000 to 100,000 AU, as part of the Solar System (which I think is common practice) this nebula is very roughly the same size as the Solar System.

Rob

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by K1NS » Wed Mar 13, 2013 12:36 pm

' . . . but was reprocessed recently by an amateur . . . "

Doesn't the "amateur" have a name? Come on, credit where due.

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by Lordcat Darkstar » Wed Mar 13, 2013 1:03 pm

K1NS wrote:' . . . but was reprocessed recently by an amateur . . . "

Doesn't the "amateur" have a name? Come on, credit where due.
Donald Waid. His name is under the pic :ssmile:

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by Boomer12k » Wed Mar 13, 2013 1:37 pm

Sauron!!!!


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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by MargaritaMc » Wed Mar 13, 2013 2:08 pm

Boomer12k wrote:Sauron!!!!

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The name has already been taken!
http://www.wired.com/wiredscience/2013/ ... -confirmed
Rogue Planet Confirmed Orbiting Around 'Eye of Sauron'

Astronomers have confirmed that a controversial exoplanet called Fomalhaut b actually does exist and have calculated its potential orbit. The results show that the object is even stranger than scientists could have imagined, dubbing it a “rogue planet.”

The uncertainty about this object started in 2008, when scientists released an image taken with NASA’s Hubble space telescope of a tiny dot of light in the debris disk of a young, bright star called Fomalhaut, which is about 25 light-years away in the constellation Piscis Austrinus. At the time, they presented only two data points, showing the exoplanet as it existed in 2004 and 2006. It was a sensational image — the enormous debris disk made the star resemble the “Eye of Sauron” from the Lord of the Rings movies — and was one of the first directly imaged extrasolar planets ever seen.
"In those rare moments of total quiet with a dark sky, I again feel the awe that struck me as a child. The feeling is utterly overwhelming as my mind races out across the stars. I feel peaceful and serene."
&mdash; Dr Debra M. Elmegreen, Fellow of the AAAS

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by Psnarf » Wed Mar 13, 2013 3:11 pm

Wow!
Beautiful flower - It must be getting close to Spring.
Even captured the glowing part of the stem.

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by JM Melanson » Wed Mar 13, 2013 8:13 pm

Do you see the figure holding a wand? It looks like he just produced the star burst!

Image

Right-Click on word image above then click on view image to see an enhanced cropped area of the bottom right...
My wife Judy noticed this and I thought it was worth mentioning.

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by neufer » Wed Mar 13, 2013 8:37 pm

Click to play embedded YouTube video.
JM Melanson wrote:
Do you see the figure holding a wand? It looks like he just produced the star burst!

Image

Right-Click on word image above then click on view image to see an enhanced cropped area of the bottom right...
My wife Judy noticed this and I thought it was worth mentioning.
Art Neuendorffer

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by Beyond » Wed Mar 13, 2013 9:05 pm

E-e-e-yup :!: He's recuperated. :yes: YEE-HAA :!: :!: :cowboy:
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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by saturno2 » Wed Mar 13, 2013 11:13 pm

0.8 light year = 292 light days
292 light days / 600 = 0.48 light day ( This is the diameter of Solar
System by this APOD)
The diameter of Solar System ( classic opinion ) has the end in the
orbit of Pluto. This diameter is aprox. = 0.5 light day or 12 light hours

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Re: APOD: NGC 6751: The Glowing Eye Nebula (2013 Mar 13)

Post by Mactavish » Thu Mar 14, 2013 1:06 am

Neufer . .
It has been over 50 years since I’ve seen “Fantasia”, and that was when I took my son (then about 5 or 6 years old), and the movie was already about 25 years old at that time. It is another rare and timeless masterpiece that occasionally comes out of Hollywood. Mickey as the apprentice to the music of Dukas was Disney at his best. Thank you for posting it!