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#1212047 - 30/09/2013 21:06 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Registered: 30/01/2011
Posts: 1508
Loc: Oxley Brisbane Qld
COMET ISON


Evening all... didn't think I'd make it in time to quickly tell you all. Have been away so I haven't had much internet access.

Comet ISON is about to do it's fly by of Mars 1st October 2013 on it's way to pass around the Sun in two months time. It will pass Mars at a distance of 0.07AU which is 6 times closer than what it will come to Earth. So now is the time to start practicing with your telescopes as it won't be long and it will pass Earth smile

Not sure if Curiosity will get a good view. But HiRise which is a newish satelite orbiting Mars will hopefully get a view and some imagery. NASA will be attempting to position all Mars rovers to get a birds eye view. So fingers crossed they are able to.

Here is the latest from ScienceatNASA on ISON's close flyby with the Red Planet.




Did you know over 16 satellites will be keenly observing comet ISON along with those in our ISS.


Here is an image showing Comet ISON, and Asteroid 433 Eros and Mars all in one frame. Comet ISON has a buddy smile




In this video you will see them moving through space together, this imagery was released this week and has had many a buzz with excitement and the conspiracy theorists out and about, so please ignore it if you go in search of more information.





Here is a beautiful colour enhanced image of Comet ISON




So watch very closely from now on in the Sun's response to ISON and her magnetic flux. She will as she already has started to respond to this celestial visitor.


Here we go something a little fun for the kids an interactive depiction of comet ISON approaching and passing the Sun.

http://www.solarsystemscope.com/ison/



Here is just the link to http://www.solarsystemscope.com/ incredible technology now days.



Stay tuned smile
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#1213098 - 10/10/2013 20:35 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Registered: 30/01/2011
Posts: 1508
Loc: Oxley Brisbane Qld
Evening Folks,

How are we all? Tomorrow's Friday and then the weekend woo hoo smile

I have a comet ISON update as shared on Spaceweather.com today.

Quote:
GREEN COMET ISON: Comet ISON is brightening as it approaches the sun. At the moment it is glowing like a 10th magnitude star, too dim for naked eye viewing but an easy target for many telescopes on Earth. "This is what the comet looked like on Oct. 8th using the 0.8m (32 inch) Schulman Telescope," reports Adam Block from the University of Arizona Skycenter atop Mount Lemmon:




Quote:
ISON's green color comes from the gases surrounding its icy nucleus. Jets spewing from the comet's core contain cyanogen (CN: a poisonous gas found in many comets) and diatomic carbon (C2). Both substances glow green when illuminated by sunlight in the near-vacuum of space.

"I am certain more images of Comet ISON will be coming out shortly as it increases in brightness during its dive towards the Sun," adds Block. "Here is hoping it survives that rendezvous on Nov. 28th and emerges as something spectacular on the other side!"




Currently there is another Sun Diving comet heading towards the Sun

Another smaller comet from the Kreutz family was seen approaching the Sun today. The below snapshot is taken from(SOHO) which monitored the comet's death plunge:




Here is the animated footage - for those of you who follow me in the spaceweather thread will know I have mentioned to always observe to see if a CME is released by the Sun as Comets approach. This CME is quite minor and not as explosive as some.




I didn't know this but the vast majority of Kreutz comets are small (no more than ~10 m wide) and they evaporate completely as they approach the sun.


Comet ISON, on the other hand, is large (~0.5 km wide) and widely expected to survive its brush with the sun on 28th November 2013.



The Sydney Observatory - http://www.sydneyobservatory.com.au

Just surfing the net I came across this update from the Sydney Observatory.

Quote:
The path of comet ISON is believed to be very similar to that of the comet of 1680. This bright comet had an important role in the history of science for Isaac Newton carefully plotted its path and established that it was a parabola as required under his Universal Law of Gravitation. Newton’s success in establishing the path of this comet inspired Edmond Halley to look at the paths of past comets and so led to the discovery of Halley’s Comet.



The path of Comet ISON in the inner solar system is shown in orange when above the plane of the ecliptic and in yellow below. The position of the comet is shown a day after its closest approach to the Sun.


Quote:
Comet ISON will pass just 1.2 million km from the Sun on 29 November 2013 (Australian time). From Earth it will be about one degree from the Sun. At that time it may appear sufficiently bright to be visible in daytime, however, comets are notoriously fickle and this one may not perform as expected.

In the week or two before closest approach to the Sun or perihelion the comet will be visible low in the east before sunrise. It should be getting brighter, but also closer to the horizon each morning. If the comet grows a visible tail, it should be pointing upwards, away from the rising Sun.

After perihelion as the comet moves towards the Earth we will not be able to get much of a look from the southern hemisphere. It will be neither an evening nor a morning object for in the evenings the comet will set before the Sun and in the mornings it will rise with the Sun.

Assuming the comet does not fade away like some comets of the past, for those of us in the southern hemisphere the best chance to see Comet ISON will be from mid to late November 2013 in the mornings before sunrise and in the daytime about the date of perihelion on 29 November 2013. As indicated above, watch this blog for updates and take extreme care when looking in the direction of the Sun.





So at this point we sit and wait with anticipation and hope that Comet ISON will be visible even in daylight as it would be such a spectacle. Pop in your diary 28 November 2013 smile


On that note I will bid you goodnight.

SDx
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#1213210 - 11/10/2013 22:09 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Registered: 30/01/2011
Posts: 1508
Loc: Oxley Brisbane Qld
Howdy just a quickie smile

Now this link is a must save by all.... It has all of STEREO/SOHO satellite imagery on one page that will I believe constantly update as ISON approaches and when it first appears. It currently shows the projected path so you know what to look for. And don't worry I will share when it is all unfolding smile

http://stereo-ssc.nascom.nasa.gov/comet_ison/

adios.....
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#1214270 - 19/10/2013 19:18 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Posts: 1508
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Comet ISON from the Southern Hemisphere

Directly from Sydney Observatory...




Comet ISON and the planet Mars as seen from Sydney at dawn in November 2013. The position of the comet is shown for different dates, eg ISON 8 means is its position on 8 November 2013. The direction of the tail, which always points away from the Sun, is marked. The length of the tail on different dates is purely indicative.



Spaceweather.com has started building a really good collection of images.

http://spaceweathergallery.com/index.php?title=ison



Currently you want to be aiming your telescopes in the general direction of Mars

Comet ISON, which will fly through the atmosphere of the sun on Nov. 28th, is now flying past the planet Mars. The green comet and the Red Planet are just 1o apart in the eastern sky before dawn. Parks Squyres photographed the odd couple from his private observatory in SaddleBrooke, Arizona, on 16 October

Mars is almost as bright as a 1st-magnitude star, easy to find in the constellation Leo near the blue star Regulus. The comet, on the other hand, is invisible to the unaided eye. Mid-sized backyard telescopes are required to see it.

The comet is green because its vaporizing nucleus emits diatomic carbon, C2, a gas which glows green in the near-vacuum of space. Mars is red because its rocky surface is widely rusted. The two colors make a heavenly ensemble.






Here is a site that is seemingly posting up to date info and all factually presented.

http://www.cometisonnews.com/

He or she who owns the site though needs to update the 'Current Distant' page smile



Stay tuned I guess, presently as per the hubblesite ISON still is looking OK and intact http://hubblesite.org/newscenter/archive/releases/2013/42/


Have a good weekend

SDx
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#1217205 - 10/11/2013 08:20 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Registered: 30/01/2011
Posts: 1508
Loc: Oxley Brisbane Qld
Comet ISON update


Time for the good news...

The time has come to start looking to the sky for all of you keen to observe Comet ISON - some of you may have already begun tracking ISON in the early dawn skies.

Comet ISON is currently within Earths orbit and is brightening as it approaches the sun. Multiple observers now report that it is visible in 10x50 binouclars and is currently shining around a magnitude 8. Currently ISON is travelling at a mere 103,000 mph (46 km/s), mind blowing speed really and still looks solid to survive its close encounter with the Sun smile


Here is a really informative link to read from ABC Science on what we can expect some of which I have quoted below http://www.abc.net.au/science/articles/2013/11/01/3880970.htm


Where to look....Comet ISON is currently moving through the constellation Virgo low in the eastern sky before dawn. Shining like an 8th magnitude star, it is still too dim for naked eye viewing, but an increasingly easy target for backyard optics. As it is low on the horizon, especially in our southern states, the best time to look is an hour and a half before local sunrise - a time known as nautical twilight.

What a great animated image to help us find it





Time for the bad news....

If comet ISON survives it's fiery encounter with the Sun it will be those in the Northern Hemisphere that will get to view comet ISON in daylight hours with the naked eye.... Big Sigh frown

So for most of us in the Southern Hemisphere November is the month to get out there and look for it. Otherwise we can turn to Solar instruments to capture amazing footage - like what occurred with comet Lovejoy. But in saying that those of you in Cairns may also get to see comet ISON in daylight hours due to the higher latitude.






Some more good news....


Quoted from ABC Science link above


By the middle of the month — around 14 November — ISON should be easily seen in binoculars and just visible to the unaided eye about five hand spans diagonally east of Mars. But the comet is also sinking towards the horizon, so you will have to wait deeper in the twilight for the comet to get reasonably high above the horizon, as the sky brightens the comet will be more difficult to see, offsetting its own rise in brightness.

The comet is also moving much more quickly now, as it begins its final dive into the sun. Over the next four days the comet quickly approaches the bright star Spica, the obvious and brightest star in the constellation of Virgo.

By 18 - 19 November the comet should brighten rapidly and be easy to find less than a finger-width from the star Spica — the brightest star in the constellation of Virgo.

After this time, things start moving even more quickly. The comet rapidly brightens as it sinks into the brightening dawn sky. It may be that comet ISON will be easily seen, or you might still need binoculars to locate it. At this stage we cannot tell which of these possibilities it might be, but it should be a very nice sight even if it's only visible clearly in binoculars.

On 28 November, if ISON rounds the Sun, it may be bright enough to be theoretically visible in daylight, but as it will be only a finger width from the Sun, do not attempt to observe it. Unless you are a very experienced observer with specialised equipment you risk severe eye damage or blindness from the Sun.

This time is crucial for comet ISON's development, if the comet disintegrates completely then its journey is over. If it survives, or breaks into two or three big pieces, then there should be a spectacular tail, somewhere between that splendor of McNaught's tail and the pale searchlight of Lovejoy.

If you live at the latitudes of Cairns or above you may be lucky enough to see it
. Hopefully, the rest of us will be able to vicariously enjoy comet ISON via images from the northern hemisphere as it returns to the depths of space.



Telescopes and co-ordinates

For those of you that have a GOTO telescopes the following links will take you to co-ordinates you can enter in to track and observe ISON.

http://scully.cfa.harvard.edu/cgi-bin/returnprepeph.cgi?d=c&o=CK12S010

Special dates of interest are Nov. 17th and 18th when the comet will pass the bright star Spica.

SkyMap for 11 November - looking east before dawn

SkyMap for 12 November - looking east before dawn

SkyMap for 13 November - looking east before dawn




Let's hope ISON survives it's encounter with the Sun and for those of you in the higher latitudes of Australia get to see it in spectacular fashion.

Off to make a coffee
Take care
SDx
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#1218056 - 12/11/2013 20:01 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Registered: 30/01/2011
Posts: 1508
Loc: Oxley Brisbane Qld
Update directly from Spaceweather.com



COMET ISON SPROUTS A DOUBLE TAIL: Amateur astronomers are getting a better look at Comet ISON as it dives toward the sun for a Nov. 28th close encounter with solar fire. As the heat rises, the comet brightens, revealing new details every day.


This photo, taken Nov. 10th by Michael Jäger of Jauerling Austria, shows a beautiful double tail:





One tail is the ion tail. It is a thin streamer of ionized gas pushed away from the comet by solar wind. The filamentary ion tail points almost directly away from the sun.

The other tail is the dust tail. Like Hansel and Gretel leaving bread crumbs to mark their way through the forest, ISON is leaving a trail of comet dust as it moves through the solar system. Compared to the lightweight molecules in the ion tail, grains of comet dust are heavier and harder for solar wind to push around. The dust tends to stay where it is dropped. The dust tail, therefore, traces the comet's orbit and does not point directly away from the sun as the ion tail does.
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#1218802 - 14/11/2013 20:20 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Registered: 30/01/2011
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Loc: Oxley Brisbane Qld
Our lovely little comet Lovejoy is back in town and like last time is putting on a good show smile


Directly from spaceweather.com

THIS COMET IS BRIGHTER THAN ISON: Comet ISON is getting all the press, but another comet is outshining the media-favorite by nearly an order of magnitude. Comet Lovejoy (C/2013 R1) is almost 10 times brighter than Comet ISON as it passes just outside the orbit of Earth in mid-November: 3D orbit. Rolando Ligustri took this picture of Comet Lovejoy on November 12th using a remotely-controlled telescope in New Mexico:




The comet's pale green atmosphere is almost twice as wide as the planet Jupiter, and there are no fewer than three tails streaming behind the comet's nucleus. Sky watchers in dark sky sites say that can now see this lovely comet as a faint smudge using averted vision--no optics required. A telescope is, however, recommended.

Comet Lovejoy is one of four comets now rising in the east before dawn. The other three are exploding Comet LINEAR X1, sungrazing Comet ISON, and short-period Comet Encke, and the brightest of them all. All four are easy targets for backyard optics. Dates of special interest include Nov. 15-18 when Comet LINEAR X1 passes by the bright star Arcturus, Nov 17-18 when Comet ISON has a close encounter with Spica, and Nov. 18-20 when Comet Encke buzzes Mercury. These stars and planets make excellent naked-eye guideposts for finding the comets. Meanwhile, bright Comet Lovejoy is approaching the Big Dipper; if you can't see it with your unaided eye, a quick scan with binoculars will reveal it.





Wonder if if Comet Lovejoy will survive the Sun again?

Cheers
SDx
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Anyone who says sunshine brings happiness has never danced in the rain smile

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#1219021 - 15/11/2013 17:23 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
Locke Offline
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Registered: 27/12/2007
Posts: 3608
Loc: Brisbane
Over the past 24 hours Comet Ison has brightened significantly and is now visible to the naked eye in areas where there is little light pollution.

If this brightening trend continues Ison might just end up living up to its hype.

The other possibility is that the current brightening is due to Ison beginning to break apart and that were now seeing its "death throes".

Personally, as someone who will be in a prime viewing location should the comet survive its passage around the sun, I sure hope it survives.

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#1219518 - 16/11/2013 19:39 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
Ms Milo Offline
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Registered: 17/03/2010
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Loc: Angourie, North Coast NSW
Really enjoying the comet thread. Think I may need to get a telescope & space out
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#1219531 - 16/11/2013 20:23 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Posts: 1508
Loc: Oxley Brisbane Qld
RARE DOUBLE-COMET FLYBY OF MERCURY:

NASA's MESSENGER spacecraft is about to get a close-up view of Comet ISON's outburst. On Nov. 18-19 Comet ISON and Comet Encke both will fly by Mercury, the planet MESSENGER is orbiting.






Two Comets to Fly By Mercury


http://science.nasa.gov/science-news/science-at-nasa/2013/15nov_twocomets/



Quote:
Nov. 15, 2013: What are the odds? On Nov. 18th and 19th not one but two comets will fly by the planet Mercury.

"This is a unique coincidence," says Ron Vervack an astronomer at the Johns Hopkins University Applied Physics Lab and a member of the science team for NASA's MESSENGER spacecraft, "and a golden opportunity to study two comets passing close to the sun.”
On Nov. 18th Comet Encke will pass within 0.025 AU of Mercury, followed a day later by Comet ISON at 0.24 AU (1 AU is the distance between the sun and Earth, 150 million km). The MESSENGER spacecraft, which is orbiting Mercury, will turn its sensors toward the passing comets for a point-blank investigation of both.



Quote:
The double flyby is exciting, says Vervack, but "it makes things a little crazy. We have to rush to complete our observations of Comet Encke, then do it all over again for Comet ISON. Everything is happening at more or less the same time."

MESSENGER was designed to study Mercury, not comets, “but it is a capable spacecraft with a versatile instrument package,” he adds. “We hope to get some great data.” Onboard spectrometers will analyze the chemical makeup of the two comets while MESSENGER's cameras snap pictures of atmospheres, jets and tails.



Quote:
Comet ISON is already a media favorite. Astronomers have been tracking it since Sept. 2012 when it was discovered on a trajectory that would take it perilously close to the sun. On Nov. 28th of 2013, Thanksgiving Day in the USA, Comet ISON will pass through the sun's atmosphere little more than a million kilometers above the sun's fiery surface. If the icy comet survives, it could emerge as a beautiful naked-eye object for observers in the northern hemisphere. MESSENGER’s glimpse of Comet ISON as it plunges inward could give astronomers the data they need to predict the comet’s fate.

Comet Encke is less well known, but no less interesting. For one thing, it is the source of the Taurid meteor shower, a slow display of midnight fireballs that occurs every year in early- to mid-November. Comet Encke dips inside the orbit of Mercury every 3.3 years, so it is regularly exposed to solar activity.





Here is the Messenger Mission website
http://messenger.jhuapl.edu/

I would expect updates to be posted on this website and Spaceweather.com
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#1219539 - 16/11/2013 20:35 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Registered: 30/01/2011
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Loc: Oxley Brisbane Qld
I would love to be in the middle of the outback now Miss Milo just to be able to observe them with millions of stars littering the night sky and yes space out hehe

For ages I have wanted a telescope but more to view the Sun, then of course I would have to have another one to view comets and other planets/stars. I guess there is Christmas smile



Here we go Comet ISON is still continuing to brighten.


Directly from Spaceweather.com

COMET ISON OUTBURST CONTINUES: The abrupt brightening of Comet ISON on Nov. 14th has pushed the comet into the range of naked eye visibility. Dark-sky observers around the world report seeing it with their unaided eyes on the morning of Nov. 15th. To the human eye, ISON is just a faint smudge of magnitude +5.5. Backyard telescopes are revealing much more. The effects of the outburst have propagated into the comet's suddenly riotous tail, as shown in this image taken on the morning of Nov. 15th by Damian Peach:


Photo credit Damian Peach


"It's hard to believe this is the same comet I photographed on Nov. 10th," says Peach. "Now that ISON has experienced an outburst, the show has really begun."

The increase in brightness and emergence of multiple gaseous streamers could be caused by fresh veins of ice opening up in the comet's nucleus. Rapid vaporization of ice by solar heat is a sure-fire way to boost a comet's visibility. But, as NASA's Comet ISON Observing Campaign states, "we have no idea." The comet's nucleus is hidden from view by a hazy green atmosphere, so events in the interior remain a mystery.

"I have a strong suspicion that this is Comet LINEAR (C/1999 S4) all over again," says Mark Kidger of the ESA's European Space Astronomy Centre in Madrid. In the year 2000, Kidger other astronomers monitored Comet LINEAR as it disintegrated en route to the sun. "The sudden appearance of ISON's gas tail, the increasing fuzziness of its coma, and now this sudden outburst all remind me of C/1999 S4 just before it broke apart."

To reiterate: No one knows what is happening to Comet ISON. This could be the comet's death throes--or just the first of many brightening events the comet experiences as it plunges toward the sun for a close encounter on Thanksgiving Day (Nov. 28th).


The below image is taken by Charles Coburn on November 14, 2013 and shows the brightening of the comet.


Photo credit Charles Coburn



Fingers are crossed for you Locke but to date Comet ISON is looking good. I just cannot wait to catch satellite imagery of it close to the Sun.

I might just jump into the spaceweather thread, sunspot numbers just exploded.

Have a wonderful evening
SDx
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#1219900 - 17/11/2013 20:49 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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COMET ISON UPDATE:

Directly from Spaceweather.com....



Reports of naked-eye sightings of Comet ISON are coming in from around the world. Experienced observers put the comet's magntitude at +5.5 on Nov. 16th. This means it is now fully 10 times brighter than it was only three days ago before the outburst. To the naked eye, ISON appears as a faint smudge of pale green light low in the pre-dawn sky. The view through a telescope is more dramatic. The comet's tail has become a riotous crowd of gaseous streamers stretching more than 3.5 degrees across the sky.

Amateur astronomer Waldemar Skorupa sends this picture from Kahler Asten, Germany




The tail is so long, he couldn't fit the whole thing in the field of view. How long is it? Comet ISON's tail extends more than 8 million kilometers behind the comet's nucleus. For comparison, that's 21 times the distance between Earth and the Moon.

Because so much gas and dust is spewing from the comet's core, it is impossible to see clearly what caused Comet ISON's outburst on Nov. 13-14. One possibility is that fresh veins of ice are opening up in the comet's nucleus, vaporizing furiously as ISON approaches the sun. Another possibility is that the nucleus has completely fragmented.

"If so, it will still be several days before we know for sure," says Karl Battams, an astronomer with NASA's Comet ISON Observing Campaign. "When comet nuclei fall apart, it’s not like a shrapnel-laden explosion. Instead, the chunks slowly drift apart at slightly different speeds. Given that ISON’s nucleus is shrouded in such a tremendous volume of light-scattering dust and gas right now, it will be almost impossible to determine this for at least a few days and perhaps not until the comet reaches the field of view of NASA's STEREO HI-1A instrument on November 21, 2013. We will have to wait for the chunks to drift apart a sufficient distance, assuming they don't crumble first."

In short, no one knows for sure what is happening to Comet ISON. This could be the comet's death throes--or just the first of many brightening events the comet experiences as it plunges toward the sun for a close encounter on Thanksgiving Day (Nov. 28th).




Anyone getting up to view it yet?

Let us know if you do

Cheers
SDx
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#1221668 - 24/11/2013 08:58 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
duckweather Offline
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Registered: 20/12/2010
Posts: 1879
Loc: Wantirna, Vic
This is fascinating..have a look at the comets ISON and Encke moving in the same NASA video here - "Signs in the heavens? Two comets racing towards Earth and Sun: ‘unprecedented’" - EP

Cheers, Duck.

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#1222079 - 25/11/2013 12:57 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
Locke Offline
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Registered: 27/12/2007
Posts: 3608
Loc: Brisbane
I'm feeling much more optimistic about Ison's chances now than I was a month ago when many were writing it off as overhyped and likely to disintegrate before it even reached perihelion.

Were now only 4 days from perihelion and whilst the view of Ison is currently being hampered by its proximity to the sun, its that very proximity that may well provide a truly spectacular show as we head into December. Were already seeing some amazing photos.

All systems are go now for me to be in the Arctic Circle in the first week in December far away from the lights of civilization. In just over a week I hope to have some awesome photo's of ISON in all its grandeur assuming it survives its encounter with the sun.

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#1222548 - 27/11/2013 18:29 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
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Registered: 30/01/2011
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Loc: Oxley Brisbane Qld
Hi Locke and WZ folks.

How exciting you are not far from going on a trip of a life time Locke. Keep us posted if you are able too as I would love it. And I will wish you some of the grandest auroras ever captured. I will take a look at the Sun a little later and do a report, comet ISON surviving is dependent I think now on upcoming Solar activity, which way it approaches the Sun i.e. if it approaches at its closest over a busy active region it might just cop a glancing blow that could spell the end or give it a whollup smile



Lets see what comet ISON is upto.....

To start with here is imagery of both comet ISON and ENCKE approaching the Sun back on 25/11/2013 UTC time.

Again you will note their tails wavering in the Solar wind stream, they almost look like they are about to collide




Fast forward to today and here is the absolute latest imagery shown on Spaceweather.com

Click on this link to go to their site http://spaceweather.com/archive.php?view=1&day=26&month=11&year=2013

Then click on the image as shown below for it to download and view








To save me downloading time I found another pretty recent film of Comet ISON






***Now how to download you own movies to stay abreast of Comet ISON's approach


LASCO C3 - SOHO Data


In the first image on the left shows the predicted hour-by-hour position of Comet ISON in the LASCO C3 (blue) and C2 (red) fields-of-view on SOHO, between the dates of November 27-30, 2013 UT time.
In the second image on the right you will see comet ISON is now coming into view on the LASCO C3 (blue) imagery.





Below are the instructions on how to download your own latest imagery of comet ISON as it has just come into view on the LASCO C3 images. It will come into view on the LASCO C2 imagery shortly I would imagine, it isn't showing yet.


1. Click on this link http://sohodata.nascom.nasa.gov/cgi-bin/data_query
2. Select LASCO C3 - under Image Type or try LASCO C3
3. Select 512 - under Resolution if you select 1024 it will take longer to load
4. Select Movie - under Display
5. Enter 2013-11-26 in the Start Date field and enter the current date in the End Date field i.e. 2013-11-27
6. Click on the Search button.


OR... to be quick and simple you could click on this link to view the last 48 hours of real time data imagery http://soho.nascom.nasa.gov/data/realtime/gif/

Than click on the image titled LASCO/C3 (blue) or LASCO/C2 (red)

* Note when I clicked on the image as I was putting this post together it seemed to stall and was showing imagery back on the 23rd November, so who knows what is going on smile See how you go with it. Hopefully there is no censoring going on. smile




STEREO Ahead HI1 - Stereo Data

Below are instructions on downloading your own movie in watching comet ISON approach the Sun as shown on Spaceweather.com above via the STEREO Ahead HI1 imagery.

1. Click on this link http://stereo.gsfc.nasa.gov/cgi-bin/images
2. Select Ahead HI1 - under Telescope
3. Select 512x512 - under Resolution
4. Select Sideshow - under Display
5. Enter 20131121 in the Start Date field and then put the current date in the End date field.
6. Hit the search button and new page will pop up where it shouldn't take long for the images to load in a movie to view.




At this point comet ISON is intact. It is too early to speculate whether observation of so called fading emission lines which could indicate the nucleus has been disrupted or in other words the comet could appear to be fragmenting as it is realising substantially more volumes of dust. On the other hand this is also expected as it is getting closer to the incredible heat of the Sun.


So let us stay tuned for what I hope will be incredible images just like little comet LOVEJOY.
I shall post again shortly now that it has come into view smile and keep you abreast of any developments.

Take Care
SDx
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#1222550 - 27/11/2013 18:40 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
Weatherzone Addict

Registered: 30/01/2011
Posts: 1508
Loc: Oxley Brisbane Qld
Here we go folks fantastic I'm a little excited - SDO have created a viewing page/website dedicated to catching near real time imagery of comet ISON's approach, perihelion and departure.

http://cometison.gsfc.nasa.gov/#

Explore all the links.

Just note it will be on December 28 that the SDO spacecraft will pick up images as it's viewing is much different to the other spacecraft's telescopes as it picks up the different heat wavelengths of the Sun.
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Anyone who says sunshine brings happiness has never danced in the rain smile

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#1222582 - 27/11/2013 20:56 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
Weatherzone Addict

Registered: 30/01/2011
Posts: 1508
Loc: Oxley Brisbane Qld
Directly from spaceweather.com

COMET ISON, SO FAR SO GOOD:


Quote:

Comet ISON is hurtling toward the sun today at 148,000 mph and, despite the rising heat, the comet appears to be intact. Yesterday, reports of fading spectral lines from the comet's core raised concerns that the icy nucleus might be disintegrating. Current images from NASA and ESA spacecraft, however, show the comet still going strong. Comet ISON has just entered the field of view of the Solar and Heliospheric Observatory (SOHO):


Click on this link... http://spaceweather.com/images2013/27nov13/isoncme_anim.gif?PHPSESSID=upg9crrda5grb052ktmj5bp3u5

To view the animated version of this...




Quote:

The comet's entrance coincides with a bright CME racing away from the sun's southwestern limb. Astronomers have been wondering what might happen if a CME strikes Comet ISON. This CME, however, will probably miss. The source of the cloud is a farside active region, which is not directly facing the comet.
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Anyone who says sunshine brings happiness has never danced in the rain smile

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#1222606 - 27/11/2013 21:44 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
SunnyDays Offline
Weatherzone Addict

Registered: 30/01/2011
Posts: 1508
Loc: Oxley Brisbane Qld

This page from SOHO's website 'HOTSHOTS' should also stay up to date with the latest imagery to make it quick for you.

http://soho.nascom.nasa.gov/hotshots/index.html/

If you click on all the red links it will take you to the imagery.


I also posted an update on Comet ISON and the Sun in the Spaceweather thread you might also be interested in.

http://forum.weatherzone.com.au/ubbthrea..._20#Post1222602


Night all... cannot wait to see the imagery in the morning.
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Anyone who says sunshine brings happiness has never danced in the rain smile

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#1222674 - 28/11/2013 13:32 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: SunnyDays]
Locke Offline
Weatherzone Addict

Registered: 27/12/2007
Posts: 3608
Loc: Brisbane
Thanks for all the awesome information Sunnydays. Exciting times ahead indeed.

If my timing is correct I will be aboard an A380 airbus, in a window seat, facing the sun at approx 40,000ft when Ison hits perihelion. I'm trying to get a solar filter tonight that might allow me to take photos on the flight though I'm not sure what I might see.

Many have written off Ison over the past 2 months but calmer heads have observed that comets can be unpredictable particularly ones that may be making their first visit to the inner solar system.

My hope for Ison is that we get a display as spectacular as Comet McNaught unexpectedly provided in 2007. If that transpires I will be a happy man indeed.

The little hotel I'm staying at inside the Arctic Circle in Sweden does unbelievably have wireless internet so I hope to be posting pictures on or around 3rd December.

What those pictures will display is still anybodys guess.

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#1222676 - 28/11/2013 13:50 Re: 2013 Year of the Comets - LEMMON, Pan-STARRS, ISON [Re: Locke]
duckweather Offline
Weatherzone Addict

Registered: 20/12/2010
Posts: 1879
Loc: Wantirna, Vic
Hey Locke, you are one lucky duck to be going to see and experience what you will in/near the Arctic Circle.
Can you pack a Duck, SunnyDays and the rest of the gang in your luggage??? wink
Can't wait to see the pictures you get.
Best of luck for your trip.

Cheers, Duck.

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