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Comet C/2012 S1 ISON is being followed

 
Anonymous Coward
User ID: 143678
Canada
01/17/2013 08:29 PM
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Comet C/2012 S1 ISON is being followed
What is the bright dot/pixel that is following behind the movement on the comet?

[link to www.digitalsky.org.uk]
Circulator 38 (OP)
User ID: 143678
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01/17/2013 08:31 PM
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Re: Comet C/2012 S1 ISON is being followed
Comet C/2012 S1 ISON Facebook Page - [link to facebook.com]
Anonymous Coward
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01/17/2013 08:33 PM
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Re: Comet C/2012 S1 ISON is being followed
chances are, just what's left of your brian
Anonymous Coward
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01/17/2013 08:34 PM
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Re: Comet C/2012 S1 ISON is being followed
Comets are being stalked

GeezinGA
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01/17/2013 08:35 PM
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Re: Comet C/2012 S1 ISON is being followed
theres "pixels" moving all over the video...i am "Certain", its video translation from the original vid to the compressed version.
Anonymous Coward
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01/17/2013 08:42 PM
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Re: Comet C/2012 S1 ISON is being followed
What is the bright dot/pixel that is following behind the movement on the comet?

[link to www.digitalsky.org.uk]
 Quoting: Anonymous Coward 143678


The thought that came to me when I viewed this:

You know how NASCAR drivers will tail gate another car in a race to conserve fuel, by getting the car in front of them to break the wind and therefore ride in the wind stream with less resistance and save fuel, less pit stops...

Could this be the same phenomena when attempting deep space travel? When traveling great distances at high speeds even in space although there's no wind resistance every little bit helps to reduce a drag effect.

Even the Apollo missions used the moon's gravity to sling shot themselves back to Earth.

I'm not sure my physics is sound....
Anonymous Coward
User ID: 4123634
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01/17/2013 08:44 PM
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Re: Comet C/2012 S1 ISON is being followed
yeah, remember the heavens gate cult? they thought that too, and then they castrated themselves and committed suicide. some ideas are dangerous
Anonymous Coward
User ID: 28959013
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01/17/2013 08:49 PM
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Re: Comet C/2012 S1 ISON is being followed
What is the bright dot/pixel that is following behind the movement on the comet?

[link to www.digitalsky.org.uk]
 Quoting: Anonymous Coward 143678


The thought that came to me when I viewed this:

You know how NASCAR drivers will tail gate another car in a race to conserve fuel, by getting the car in front of them to break the wind and therefore ride in the wind stream with less resistance and save fuel, less pit stops...

Could this be the same phenomena when attempting deep space travel? When traveling great distances at high speeds even in space although there's no wind resistance every little bit helps to reduce a drag effect.

Even the Apollo missions used the moon's gravity to sling shot themselves back to Earth.

I'm not sure my physics is sound....
 Quoting: 4Evergirl


My thoughts say a tag along should orbit the object rotating axialy about
It's direction of travel..... $0.02
Circulator 38 (OP)
User ID: 143678
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01/17/2013 09:26 PM
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Re: Comet C/2012 S1 ISON is being followed
"At the time of shooting the comet was chased by some asteroids"

[link to translate.google.com]
Anonymous Coward
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01/17/2013 09:33 PM
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Re: Comet C/2012 S1 ISON is being followed
I see three small spots following.
Considering the distance involved here, these things are not close to the comet.
Interesting none the less!
Anonymous Coward
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01/17/2013 09:40 PM
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Re: Comet C/2012 S1 ISON is being followed
its photoshop 1 square pixel no shadowing
Dr. AstroModerator
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01/18/2013 12:16 AM

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Re: Comet C/2012 S1 ISON is being followed
"At the time of shooting the comet was chased by some asteroids"

[link to translate.google.com]
 Quoting: Circulator 38 143678


Completely different image taken a month prior. The original OP image shows mostly hot pixels "chasing" the comet. The hot pixels show the tracking drift of the telescope over time. Hot pixels are distinct from real point-like light sources in the image such as stars and asteroids by the fact that they do not form point spread functions, they're just sharp dots. There are hot pixels in the italian time lapse you posted there as well, but they move vertically in the image in that example.

There is an asteroid in the OP image besides the comet, but they're not physically close; the asteroid (2002 TY164) was about 1.3 AUs from earth vs about 4.1 AUs for the comet. They both move in prograde orbits around the sun so for short time intervals such as the 2 hours in which the timelapse was taken, you can't readily tell the different in their motion just by eye. Here's a crop of the OP image centered on the asteroid:
[link to i319.photobucket.com]
Notice how it forms a point-spread function like the stars around it. Based on astrometry I performed on the image (here's a version of the astrometrically solved image you can open in google sky: [link to nova.astrometry.net] ) I confirmed that it is 2002 TY164, which was the closest asteroid to the comet in the sky that night.
astrobanner2
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01/18/2013 12:17 AM

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Re: Comet C/2012 S1 ISON is being followed
its photoshop 1 square pixel no shadowing
 Quoting: Anonymous Coward 29091186


Actually that indicates it's a hot pixel, but what you're getting at is that it does not form a point-spread function and indeed that is how you can easily distinguish between noise in the camera (hot pixels and cosmic ray hits) and real point-like light sources such as stars and asteroids.
astrobanner2
Anonymous Coward
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01/18/2013 03:32 AM
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Re: Comet C/2012 S1 ISON is being followed
QUICK... buy your sweat pants and KoolAid
CleverMoniker
User ID: 19931300
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01/18/2013 05:45 AM
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Re: Comet C/2012 S1 ISON is being followed
its photoshop 1 square pixel no shadowing
 Quoting: Anonymous Coward 29091186


Actually that indicates it's a hot pixel, but what you're getting at is that it does not form a point-spread function and indeed that is how you can easily distinguish between noise in the camera (hot pixels and cosmic ray hits) and real point-like light sources such as stars and asteroids.
 Quoting: Dr. Astro


I think you're a shill for Big Pixel.


;)
Anonymous Coward
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01/18/2013 11:10 AM
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Re: Comet C/2012 S1 ISON is being followed
why do the hot pixles dim same time as Ison dims ?
[link to www.youtube.com]
you can see it if you zoom in.I was thinkink lense flare myself ?
Anonymous Coward
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01/18/2013 11:19 AM
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Re: Comet C/2012 S1 ISON is being followed
[link to www.youtube.com]
Anonymous Coward
User ID: 32360712
United Kingdom
01/18/2013 11:20 AM
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Re: Comet C/2012 S1 ISON is being followed
fuck

this means i'll have to buy some new sneakers!
Anonymous Coward
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01/18/2013 11:31 AM
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Re: Comet C/2012 S1 ISON is being followed
[link to webpages.charter.net]
Dr. AstroModerator
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01/18/2013 12:10 PM

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Re: Comet C/2012 S1 ISON is being followed
why do the hot pixles dim same time as Ison dims ?
 Quoting: Anonymous Coward 29014015


All depends on how the camera handles the gain and how the images were processed.
astrobanner2
Anonymous Coward
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01/18/2013 12:12 PM
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Re: Comet C/2012 S1 ISON is being followed
why do the hot pixles dim same time as Ison dims ?
 Quoting: Anonymous Coward 29014015


All depends on how the camera handles the gain and how the images were processed.
 Quoting: Dr. Astro


thanks
Anonymous Coward
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01/18/2013 12:16 PM
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Re: Comet C/2012 S1 ISON is being followed
all kinds of stuff following this "comet"





GLP