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Watched some history channel shit on "dark matter" today over noon.
What is Dave Lane's assessment of dark matter? |
frankie's mind?
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Also the distances and variety are so vast. I'm seeing things we may never even visit as a species ever. Pretty cool stuff in my opinion, your mileage may vary. |
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The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb (the tail of the swan and its brightest star). The remarkable shape of the emission nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico. It is sometimes incorrectly called the "North American Nebula".
The North America Nebula is large, covering an area of more than four times the size of the full moon; but its surface brightness is low, so normally it cannot be seen with the unaided eye. Binoculars and telescopes with large fields of view (approximately 3°) will show it as a foggy patch of light under sufficiently dark skies. However, using a UHC filter, which filters out some unwanted wavelengths of light, it can be seen by the naked eye under dark skies. Its prominent shape and especially its reddish color (from the hydrogen Hα emission line) show up only in photographs of the area. Cygnus's Wall is a term for the "Mexico and Central America part" of the North America Nebula. The Cygnus Wall exhibits the most concentrated star formations in the nebula. The North America Nebula and the nearby Pelican Nebula, (IC 5070) are in fact parts of the same interstellar cloud of ionized hydrogen (H II region). Between the Earth and the nebula complex lies a band of interstellar dust that absorbs the light of stars and nebulae behind it, and thereby determines the shape as we see it. The distance of the nebula complex is not precisely known, nor is the star responsible for ionizing the hydrogen so that it emits light. If the star inducing the ionization is Deneb, as some sources say, the nebula complex would be about 1800 light years distance, and its absolute size (6° apparent diameter on the sky) would be 100 light years. The nebula was discovered by William Herschel on October 24, 1786, from Slough, England. |
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Just an odd out of the box thought... |
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An improved version of the Back of the Pelican Nebula with added frames in Hydrogen Alpha.
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Oh and heres a 2 minute video of the observatory roof opening. sorry for the shakiness. Now all I need is my pier to make it usable.
<iframe width="560" height="349" src="http://www.youtube.com/embed/nJOSavcruPo" frameborder="0" allowfullscreen></iframe> |
Dave, this is cool on so many different levels.
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Oh and of course the earth is only 6,000 years years old /religion |
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Here's where this second shot was taken the North America Nebula next to the Pelican
The highlighted area is roughly where the shot was taken. |
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One of my favorite things in the sky.
Unspeakable beauty and unimaginable bedlam can be found together in the Trifid Nebula. Also known as M20, this photogenic nebula is visible with good binoculars towards the constellation of Sagittarius. The energetic processes of star formation create not only the colors but the chaos. The red-glowing gas results from high-energy starlight striking interstellar hydrogen gas. The dark dust filaments that lace M20 were created in the atmospheres of cool giant stars and in the debris from supernovae explosions. Which bright young stars light up the blue reflection nebula on the right is still being investigated. The light from M20 we see today left perhaps 3,000 years ago, although the exact distance remains unknown. Light takes about 50 years to cross M20. |
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http://throughthewormhole.net/season...-the-universe/ |
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