chillardbee
Well-Known Member
Not even 12 hours and this is how much Ison has moved
comet ISON
- Thread starter Mad Oshea
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Not even 12 hours and this is how much Ison has moved
chillardbee
Well-Known Member
From Sky and Telescope: http://www.skyandtelescope.com/observing/highlights/193909261.html
Looking East-Southeast, 30 minutes before sunrise [IF it survives grazing the sun].
The comet's tail (perhaps visible only with binoculars) does not trail its movement. It simply points away from the sun.
If you have a clear view of the horizon to the East-Southeast, this Sunday morning, just before dawn should be the brightest. Note that the Moon is only a "fingernail" that day. (The blue 10º bar is roughly the width of your fist held at arms length.)
Bob
Looking East-Southeast, 30 minutes before sunrise [IF it survives grazing the sun].
The comet's tail (perhaps visible only with binoculars) does not trail its movement. It simply points away from the sun.
If you have a clear view of the horizon to the East-Southeast, this Sunday morning, just before dawn should be the brightest. Note that the Moon is only a "fingernail" that day. (The blue 10º bar is roughly the width of your fist held at arms length.)
Bob
chillardbee
Well-Known Member
If it survives perihelion, I'm thinking that this comet is not going live up to all the hype. The nucleus is only 4 Miles wide.
chillardbee
Well-Known Member
My gosh, Yesterday when I looked the comet was 12 million miles away from the sun and closing fast at a speed of 145 Km/second and just now I looked (Nov 28th) in less than 24 hours she has closed the gap to 5 million miles and is now travelling at a wopping 230 Km/second that thing is moving very, very, very, very, very, very fast.
chillardbee
Well-Known Member
chillardbee
Well-Known Member
[video]http://www.spaceweather.com/images2013/28nov13/rip_anim.gif?PHPSESSID=f19cpfsbviuohmf8k23m4a2d74[/video]
[video]http://science.nasa.gov/media/medialibrary/2013/11/28/sundiver_anim3.gif[video]
[video]http://science.nasa.gov/media/medialibrary/2013/11/28/sundiver_anim3.gif[video]
chillardbee
Well-Known Member
looks like it is disentigrating 
Don't think the sun grazer is going to survive its perihelion.
Don't think the sun grazer is going to survive its perihelion.
chillardbee
Well-Known Member
she survived but just barely.
BarG
Founding Member
Damn I missed it: Heres some highlights.
I had no idea there were so many other "astronomers" on this site. I myself have a "10 inch". I've tried to use that as a pickup line at the bar but it never seemed to work...
I'm going to go out tomorrow morning about 4:30 with my binocs to check out Ison and Lovejoy.
Where's the fun in that?...
I thought by law that you had to get up early in the morning, put on several layers of clothes, make something hot to drink, try to wake up to no avail the sleepyheads in your house, trudge on outside in the cold, look up and strain your neck, get your feet soaking wet from the dew and finally get disgusted because there is only one cloud in the entire sky and it has settled over your viewing area... now that's fun!...
From Sky and Telescope: http://www.skyandtelescope.com/observing/highlights/193909261.html
Looking East-Southeast, 30 minutes before sunrise [IF it survives grazing the sun].
The comet's tail (perhaps visible only with binoculars) does not trail its movement. It simply points away from the sun.
If you have a clear view of the horizon to the East-Southeast, this Sunday morning, just before dawn should be the brightest. Note that the Moon is only a "fingernail" that day. (The blue 10º bar is roughly the width of your fist held at arms length.)
Bob
Comet ISON Fizzles as it Rounds the Sun
Maybe the writer meant "sizzles" as it rounds the sun. Looks like the party is over for the comet.
It looks like a massive debris field is all the remains of the comet. Has anyone considered this happening and when or if earth's orbit will `intersect with this debris?
Maybe the writer meant "sizzles" as it rounds the sun. Looks like the party is over for the comet.
It looks like a massive debris field is all the remains of the comet. Has anyone considered this happening and when or if earth's orbit will `intersect with this debris?
skychaser
Well-Known Member
I've been on Spaceweather.com's e-mail alert list since they first started doing it, I received this e-mail from them today at 2:40 pm.
Space Weather News for Nov. 28, 2013
http://spaceweather.com
"RIP, Comet ISON? Evidence is mounting that Comet ISON did not survive its brush with the sun on Nov. 28th. SOHO coronagraph images show the comet apparently disintegrating, while first-look images from the Solar Dynamics Observatory did not detect the comet moving along its expected path through the sun's atmosphere."
But apparently some portion of it did survive it's encounter with the sun. This is on their site as of 10 pm.
"CANCEL THE EULOGY ... FOR NOW: Comet ISON flew through the sun's atmosphere on Nov. 28th and the encounter did not go well for the icy comet. Just before perihelion (closest approach to the sun) the comet rapidly faded and appeared to disintegrate. This prompted reports of ISON's demise. However, a fraction of the comet might have survived.
http://spaceweather.com/images2013/28nov13/rip_anim5.gif?PHPSESSID=7gurpvorh3u05fglvqfhp49dj4
In the movie, Comet ISON seems to be falling apart as it approaches the sun. Indeed, researchers working with NASA's Solar Dynamics Observatory said they saw nothing along the track that ISON was expected to follow through the sun's atmosphere. Nevertheless, something has emerged. Whether this is a small scorched fragment of Comet ISON's nucleus or perhaps a "headless comet"--a stream of debris marking the remains of the comet's disintegrated core--remains to be seen."
Space Weather News for Nov. 28, 2013
http://spaceweather.com
"RIP, Comet ISON? Evidence is mounting that Comet ISON did not survive its brush with the sun on Nov. 28th. SOHO coronagraph images show the comet apparently disintegrating, while first-look images from the Solar Dynamics Observatory did not detect the comet moving along its expected path through the sun's atmosphere."
But apparently some portion of it did survive it's encounter with the sun. This is on their site as of 10 pm.
"CANCEL THE EULOGY ... FOR NOW: Comet ISON flew through the sun's atmosphere on Nov. 28th and the encounter did not go well for the icy comet. Just before perihelion (closest approach to the sun) the comet rapidly faded and appeared to disintegrate. This prompted reports of ISON's demise. However, a fraction of the comet might have survived.
http://spaceweather.com/images2013/28nov13/rip_anim5.gif?PHPSESSID=7gurpvorh3u05fglvqfhp49dj4
In the movie, Comet ISON seems to be falling apart as it approaches the sun. Indeed, researchers working with NASA's Solar Dynamics Observatory said they saw nothing along the track that ISON was expected to follow through the sun's atmosphere. Nevertheless, something has emerged. Whether this is a small scorched fragment of Comet ISON's nucleus or perhaps a "headless comet"--a stream of debris marking the remains of the comet's disintegrated core--remains to be seen."
Well there you have it. We'll finally be able to see the alien spaceship that was encapsulated inside the comet. Those Hale-Bopp people were right after all.
skychaser
Well-Known Member
From spaceweather.com
COMET ISON LIVES! Cancel the funeral. Comet ISON is back from the dead. Yesterday, Nov. 28th, Comet ISON flew through the sun's atmosphere and appeared to disintegrate before the cameras of several NASA and ESA spacecraft. This prompted reports of the comet's demise. Today, the comet has revived and is rapidly brightening. Click to view of a SOHO coronagraph movie of the astounding flyby:
http://science.nasa.gov/media/medialibrary/2013/11/29/weird_anim.gif
Before the flyby, experts had made many predictions about what might happen to the comet, ranging from utter disintegration to glorious survival. No one predicted both.
Karl Battams of NASA's Comet ISON Observing Campaign says, "[colleague] Matthew Knight and I are ripping our hair out right now as we know that so many people in the public, the media and in science teams want to know what's happened. We'd love to know that too! Right now, here's our working hypothesis:
"As comet ISON plunged towards to the Sun, it began to fall apart, losing not giant fragments but at least a lot of reasonably sized chunks. There's evidence of very large dust in the long thin tail we saw in the [SOHO coronagraph] images. Then, as ISON plunged through the corona, it continued to fall apart and vaporize, losing its coma and tail completely just like sungrazing Comet Lovejoy did in 2011. What emerged from the Sun was a small but perhaps somewhat coherent nucleus that has resumed emitting dust and gas for at least the time being."
Battams emphasizes that it is too soon to tell how big the remnant nucleus is or how bright the resurgent comet will ultimately become. "We have a whole new set of unknowns, and this ridiculous, crazy, dynamic and unpredictable object continues to amaze, astound and confuse us to no end. We ask that you please be patient with us for a couple of days as we analyze the data and try to work out what is happening."
COMET ISON LIVES! Cancel the funeral. Comet ISON is back from the dead. Yesterday, Nov. 28th, Comet ISON flew through the sun's atmosphere and appeared to disintegrate before the cameras of several NASA and ESA spacecraft. This prompted reports of the comet's demise. Today, the comet has revived and is rapidly brightening. Click to view of a SOHO coronagraph movie of the astounding flyby:
http://science.nasa.gov/media/medialibrary/2013/11/29/weird_anim.gif
Before the flyby, experts had made many predictions about what might happen to the comet, ranging from utter disintegration to glorious survival. No one predicted both.
Karl Battams of NASA's Comet ISON Observing Campaign says, "[colleague] Matthew Knight and I are ripping our hair out right now as we know that so many people in the public, the media and in science teams want to know what's happened. We'd love to know that too! Right now, here's our working hypothesis:
"As comet ISON plunged towards to the Sun, it began to fall apart, losing not giant fragments but at least a lot of reasonably sized chunks. There's evidence of very large dust in the long thin tail we saw in the [SOHO coronagraph] images. Then, as ISON plunged through the corona, it continued to fall apart and vaporize, losing its coma and tail completely just like sungrazing Comet Lovejoy did in 2011. What emerged from the Sun was a small but perhaps somewhat coherent nucleus that has resumed emitting dust and gas for at least the time being."
Battams emphasizes that it is too soon to tell how big the remnant nucleus is or how bright the resurgent comet will ultimately become. "We have a whole new set of unknowns, and this ridiculous, crazy, dynamic and unpredictable object continues to amaze, astound and confuse us to no end. We ask that you please be patient with us for a couple of days as we analyze the data and try to work out what is happening."
chillardbee
Well-Known Member
The latest image from SOHO shows that she might of survived very well indeed.
chillardbee
Well-Known Member
From Sky and Telescope: http://www.skyandtelescope.com/observing/highlights/193909261.html
Looking East-Southeast, 30 minutes before sunrise [IF it survives grazing the sun].
The comet's tail (perhaps visible only with binoculars) does not trail its movement. It simply points away from the sun.
If you have a clear view of the horizon to the East-Southeast, this Sunday morning, just before dawn should be the brightest. Note that the Moon is only a "fingernail" that day. (The blue 10º bar is roughly the width of your fist held at arms length.)
Bob
If your not wanting to get up early to see it in the east, It will also be visible in the west as well. It will evenually even get high enough to be a circumpolar object.
Mad Oshea
Taking a break
I wasn't sure If our sun was hungry? I guess just a tast.LOL Still goin out te see if it is actualy smaller? Hale Bopp was a flop some died for. Guess no one is that stupid today.
Where's ISON?
Last night, I walked the fence row along the road, using my compass to determine the best location for the clearest view of the horizon to the East-Southeast. Once I had located the spot, I attached a small (backpacker's) camera tripod to the top of a steel fencepost. Then I counted the paces back to the head of my driveway. I would need this to locate the fence in the darkness.
This morning, in 15º temps under a clear sky, I dressed and went out in total darkness with my little digital camera, and counted off the paces. After mounting the camera on the fencepost, I set it to ISO 800 (no control of the effective f-stop), turned off the flash, and set the shutter for a 10 second delay, with the focus mode set to infinity. Despite all the camera's fancy features (face recognition, blink recognition, auto-tracking, and much, much more), there is no way to set the actual exposure parameters--"shutter" speed and exposure time.
I took a bazillion shots. One thing is certain about ISON: if it still exists, my camera won't be able to capture it. If you look at even the darkest sky in my photos, you will see no stars. I had better stick to photographing tobacco.
Bob
Last night, I walked the fence row along the road, using my compass to determine the best location for the clearest view of the horizon to the East-Southeast. Once I had located the spot, I attached a small (backpacker's) camera tripod to the top of a steel fencepost. Then I counted the paces back to the head of my driveway. I would need this to locate the fence in the darkness.
This morning, in 15º temps under a clear sky, I dressed and went out in total darkness with my little digital camera, and counted off the paces. After mounting the camera on the fencepost, I set it to ISO 800 (no control of the effective f-stop), turned off the flash, and set the shutter for a 10 second delay, with the focus mode set to infinity. Despite all the camera's fancy features (face recognition, blink recognition, auto-tracking, and much, much more), there is no way to set the actual exposure parameters--"shutter" speed and exposure time.
I took a bazillion shots. One thing is certain about ISON: if it still exists, my camera won't be able to capture it. If you look at even the darkest sky in my photos, you will see no stars. I had better stick to photographing tobacco.
Bob
Mad Oshea
Taking a break
Bob, That is some great shots buddy! That is why I use My 35 mil.1,000 speed film. Now if that aint ISON in the trees, It may be a chupicobra watchin You. I would blow those pictures and frame them. Call em- Morning for ISON. Good job!
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