Author Topic: Particle Strike Collection  (Read 64761 times)

Rookwings

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Re: Particle Strike Collection
« Reply #180 on: January 29, 2012, 07:17:49 pm »
Aha, thanks, jules  :D
[ In the wash, eh? Please watch out for the spin cycle! I suppose you'd need to dry it in the LHC?  :o ]

Quialiss

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Re: Particle Strike Collection
« Reply #181 on: January 29, 2012, 08:27:18 pm »
:D :D  Ouch, poor disguise! 

On a science note, Tina named the noise in the COR image correctly, it's caused by high energy protons(Hydrogen Nuclei) hitting the CCD directly and causing errors.  Direct contrast to the particle strikes which are dust particles extremely close to the optics, reflecting light.  It's worth noting that the STEREO instruments don't have a problem with the proton noise in storms like these, because of the advances in technology between the spacecraft.  I was wondering about this the other day, which is why I'm waxing on about it now...

It's also curious that STEREO sees FAR more particle strikes in it's COR2 imagers than SOHO sees in its.  I think a possible explanation is that SOHO is sitting in the L1 point, I think the relative velocities of all the little dust bits there would be much smaller than out in Earth trailing/leading orbit.  I don't know though.   Maybe it's actually something to do with the different instrumentation, or the filters on the imagers, or something completely different.   ??? ???

jules

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Re: Particle Strike Collection
« Reply #182 on: January 31, 2012, 03:11:52 pm »
I think you might be right with the L1 theory. If I remember correctly (and I really should check before jumping in with both feet... ::)) the L1 and L2 points are stable and clear of dust unlike the L4 and L5 points - which are dusty trojan hideouts. L3 is the one "behind" the Sun I think so not often used.

Quialiss

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Re: Particle Strike Collection
« Reply #183 on: January 31, 2012, 07:07:02 pm »
Who doesn't love jumping?  The reason L1 and 2 are 'clean' and L4 and L5 are messy is because L1 and L2 are actually less stable than L4 and L5, without a form of propulsion to stay on target things fall out of L1 and 2, whereas 4 and 5 can 'trap' objects... like dust(Have to stay on topic somehow!).


jules

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Re: Particle Strike Collection
« Reply #184 on: January 31, 2012, 09:33:05 pm »
 ;D
Yep "stable" was the wrong word! More here.

watersnake

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Re: Particle Strike Collection
« Reply #185 on: February 24, 2012, 08:20:23 pm »
An interesting strike  in this evenings Incoming :
26.50 to 28.00
http://www.solarstormwatch.com/favourites/5640

jules

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Re: Particle Strike Collection
« Reply #186 on: February 24, 2012, 10:14:35 pm »
Nice. There's an interesting loop of material in the previous frame too.

abe27633

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Re: Particle Strike Collection
« Reply #187 on: March 11, 2012, 05:37:27 am »
Particle strikes are common, but hard to find. I found a few but I don't have the links.

abe27633

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Re: Particle Strike Collection
« Reply #188 on: March 11, 2012, 07:24:50 am »
http://www.solarstormwatch.com/favourites/5743
Hard to miss biggest one I've seen yet.  At 12.40 seconds.
« Last Edit: March 11, 2012, 07:26:47 am by abe27633 »

jules

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Re: Particle Strike Collection
« Reply #189 on: March 11, 2012, 08:32:02 pm »
You're on a roll abe27633! Welcome to Solar Stormwatch forum.

abe27633

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Re: Particle Strike Collection
« Reply #190 on: March 12, 2012, 03:20:44 am »
Thanks jules.

emandity

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Re: Particle Strike Collection
« Reply #191 on: June 29, 2012, 08:48:06 pm »
Big Particle Strike!

http://www.solarstormwatch.com/favourites/6207

occurs at 12.40.

jules

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Re: Particle Strike Collection
« Reply #192 on: June 29, 2012, 09:28:03 pm »
Big Particle Strike!

http://www.solarstormwatch.com/favourites/6207

occurs at 12.40.
Certainly is! Quite impressive - I've attached a pic. Stereo A took a battering.

Thanks emandity - and welcome to the forum! :)

Struck

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Re: Particle Strike Collection
« Reply #193 on: July 07, 2012, 09:47:46 pm »
In this video you can find many small 'Particle Strikes'.

At 11.80 and 16.10 you can see the big ones. ;)

http://www.solarstormwatch.com/favourites/5467

Struck

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Re: Particle Strike Collection
« Reply #194 on: July 08, 2012, 01:44:51 pm »
After a few small 'Particle Strikes', at 19.60 you can find a massive 'Particle Strike':

http://www.solarstormwatch.com/favourites/6228