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Originally posted by oxbow
reply to post by CaptChaos
We won't be bathed in the ion tail of Elenin on 25-27 September. We won't be anywhere near its tail, unless 30+ million miles away counts as near these days. My fingers are worn down to bloody stumps from having to write this so often.
The streams of dust and gas each form their own distinct tail, pointing in slightly different directions. The tail of dust is left behind in the comet's orbit in such a manner that it often forms a curved[citation needed] tail called the type II or dust tail. At the same time, the ion or type I tail, made of gases, always points directly away from the Sun, as this gas is more strongly affected by the solar wind than is dust, following magnetic field lines rather than an orbital trajectory.
On occasions a short tail pointing in the opposite direction to the ion and dust tails may be seen – the antitail. These were once thought to be somewhat mysterious, but are merely the end of the dust tail apparently projecting ahead of the comet due to our viewing angle.[25]
While the solid nucleus of comets is generally less than 50 km (31 mi) across, the coma may be larger than the Sun, and ion tails have been observed to extend one astronomical unit (150 million km) or more.[11]
The observation of antitails contributed significantly to the discovery of solar wind.[26] The ion tail is formed as a result of the photoelectric effect[dubious – discuss] of solar ultra-violet radiation acting on particles in the coma. Once the particles have been ionized, they attain a net positive electrical charge which in turn gives rise to an "induced magnetosphere" around the comet. The comet and its induced magnetic field form an obstacle to outward flowing solar wind particles. As the relative orbital speed of the comet and the solar wind is supersonic, a bow shock is formed upstream of the comet, in the flow direction of the solar wind. In this bow shock, large concentrations of cometary ions (called "pick-up ions") congregate and act to "load" the solar magnetic field with plasma, such that the field lines "drape" around the comet forming the ion tail.
f the ion tail loading is sufficient, then the magnetic field lines are squeezed together to the point where, at some distance along the ion tail, magnetic reconnection occurs. This leads to a "tail disconnection event".[27] This has been observed on a number of occasions, one notable event being recorded on April 20, 2007, when the ion tail of Encke's Comet was completely severed while the comet passed through a coronal mass ejection. This event was observed by the STEREO space probe.[28]
Telescope: Celestron Nexstar 11GPS
Camera: Starlight Express MX7c CCD, one shot colour 752x582 pixels. resolution of 1.9" per pixel at f/3.3 with C11 setup.
Digital Camera: canon 300D + 90-300mm zoom lens. Telescope control: Guide 8 software
Image Processing: Astroart Version 3 Observatory codes: D87 Brooklyn Park, D82 Wallaroo, 427 Stockport.
Originally posted by foreshadower99
Guy's whatever!!!!!!!
What do you give or gain from proving that Elenin is still intact?
If it is going to bring a new age then we will see it come once it's time.
If it is going to bring destruction then it just will nothing to do about it.
ITS TO LATE TO CHANGE ANYTHING IF ELENIN WILL BRING APOCALYPSE JUST LIVE.
THERE IS NO DEATH.end of caps.
40x10second exposures stacked on comet. C11 SCT and Starlight Express MX7c CCD imager
10x10second exposures. C11 SCT and Starlight Express MX7c CCD imager.
40x10second exposures stacked on comet. C11 SCT and Starlight Express MX7c CCD imager
10x10 second exposure stacked on stars.
Originally posted by camaro68ss
reply to post by CaptChaos
How do we go from comit dust to Carrington event? you lost me a little here. Can you explain?edit on 22-9-2011 by camaro68ss because: (no reason given)
Originally posted by Chadwickus
reply to post by The Old American
You claim there is no consistency with his photos which isn't entirely true, he always uses a 10 second exposure when using his Starlight Express camera.
Originally posted by CaptChaos
Whoops, guess I do run on. The ion tail is still there, and when it comes between the Earth and the Sun on Sept 25-27, it will be pointing RIGHT AT US.
I know, I know, nobody's looking at those orbital diagrams correctly, the comet is not really in line with the plane of the ecliptic, right? Well, what all you "scientists" keep failing to point out is this: This is a long period comet. REAL long period. In recorded history, or as long as you "scientists" have been keeping records and trying to figure out what's going on around us, there have only been THREE long period comets with an inclination to the ecliptic of five degrees or less. And guess which one is the winner?
That's right, THIS one with a whopping 1.8! And WHEN did it cross the plane of the ecliptic? Why, just a few days ago on the 10th, so it is still quite close to being perfectly in line. On its over ten thousand year orbit, which is pretty long, it's crossing the plane of the ecliptic only two weeks before it gets in line.
But wait, there's more!
The radial electric field the Sun puts out goes in all directions, but is mostly concentrated on the plane of the SUN'S equator. Massive hubris on man's part puts the plane of the ecliptic, which everything else is measured to, as the plane the Earth is orbiting in. Most of the planets are on similar planes, but not quite exactly aligned with each other. But, the Earth's orbit is inclined seven degrees to the Sun's equator, which really should be the baseline here, but that's another ball of wax.
WHEN does the comet cross the actual ecliptic, the plane of the Sun's equator, where the current flow is highest?
Oh yeah.
TOMORROW.
So we've got the comet crossing the ecliptic a week in advance, then crossing the real ecliptic TWO DAYS before transiting the Sun. The ion tail will be pointing RIGHT AT THE EARTH. This has NEVER happened before in recorded history. But yeah, no big deal. Nothing will happen.
I'm hoping nothing will happen. But this easily could be another Carrington event. en.wikipedia.org... Back then they were nowhere near as dependent on electricity as we are now.
Now, see, it's not the end of the world. But another Carrington event? Or even stronger? It would literally be TEOTWAWKI. Everyone knows how people seem to totally freak out and start rioting and looting during major blackouts. Imagine EVERY CITY IN THE WORLD having that happen at once? And then the power just DOESN"T COME BACK ON? We're talking pretty much collapse of civilization there.
Now, I'm hoping it doesn't happen. But, I've got a big sailboat, loaded with food and weapons. I'm gonna just go for a little ride just in case. Hopefully I'll see you guys next week. If not, been nice knowing ya.
I claim that space.com, a website that is looked to by hundreds of thousands, if not millions, of amateur and professional astronomers for accurate information and news, published an article claiming that two pictures may show "proof" that comet Elenin is breaking up
even though the second picture is clearly taken differently than the first, and in which the dimness can be explained by a shorter exposure, not necessarily by the comet breaking up.
There are star trails in the first pic, no star trails in the second. The photographer can use tintype for all I give a crap. But space.com might as well be Wikipedia for all the accuracy of this article has in it.
Let's look at two images he took on August 23rd.
40x10second exposures stacked on comet. C11 SCT and Starlight Express MX7c CCD imager
Compared with....
10x10 second exposure stacked on stars.