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Sub-Auroral Ion Drifts discovered to cause unusual purple aurora



 
 
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  #1  
Old March 15th 18, 04:10 AM posted to sci.astro.amateur
Quadibloc
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Default Sub-Auroral Ion Drifts discovered to cause unusual purple aurora

I ran across this news item:

https://phys.org/news/2018-03-myster...cientists.html

John Savard
  #2  
Old March 15th 18, 07:20 AM posted to sci.astro.amateur
Chris.B[_3_]
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Default Sub-Auroral Ion Drifts discovered to cause unusual purple aurora

On Thursday, 15 March 2018 04:10:43 UTC+1, Quadibloc wrote:
I ran across this news item:

https://phys.org/news/2018-03-myster...cientists.html

John Savard


Cue RichA to complain about light pollution:
  #3  
Old March 16th 18, 09:15 AM posted to sci.astro.amateur
RichA[_6_]
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Default Sub-Auroral Ion Drifts discovered to cause unusual purple aurora

On Thursday, 15 March 2018 02:20:14 UTC-4, Chris.B wrote:
On Thursday, 15 March 2018 04:10:43 UTC+1, Quadibloc wrote:
I ran across this news item:

https://phys.org/news/2018-03-myster...cientists.html

John Savard


Cue RichA to complain about light pollution:


Aurora can ruin observing.
  #4  
Old March 16th 18, 11:25 AM posted to sci.astro.amateur
Chris.B[_3_]
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Default Sub-Auroral Ion Drifts discovered to cause unusual purple aurora

On Friday, 16 March 2018 09:15:16 UTC+1, RichA wrote:
On Thursday, 15 March 2018 02:20:14 UTC-4, Chris.B wrote:
On Thursday, 15 March 2018 04:10:43 UTC+1, Quadibloc wrote:
I ran across this news item:

https://phys.org/news/2018-03-myster...cientists.html

John Savard


Cue RichA to complain about light pollution:


Aurora can ruin observing.


So can the sun or the moon. Both are valid targets for observation in their own right.

Why do those who suffer from light pollution demand dark skies for deep sky viewing? That's like living on the beach in Florida and expecting local ski resorts!
  #5  
Old March 18th 18, 06:49 AM posted to sci.astro.amateur
RichA[_6_]
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Posts: 1,076
Default Sub-Auroral Ion Drifts discovered to cause unusual purple aurora

On Friday, 16 March 2018 06:25:32 UTC-4, Chris.B wrote:
On Friday, 16 March 2018 09:15:16 UTC+1, RichA wrote:
On Thursday, 15 March 2018 02:20:14 UTC-4, Chris.B wrote:
On Thursday, 15 March 2018 04:10:43 UTC+1, Quadibloc wrote:
I ran across this news item:

https://phys.org/news/2018-03-myster...cientists.html

John Savard

Cue RichA to complain about light pollution:


Aurora can ruin observing.


So can the sun or the moon. Both are valid targets for observation in their own right.

Why do those who suffer from light pollution demand dark skies for deep sky viewing? That's like living on the beach in Florida and expecting local ski resorts!


More like wish for than demand. I've seen aurora cover 2/3rds of the sky, at a measly 44 deg. N. latitude.
  #6  
Old March 18th 18, 07:59 AM posted to sci.astro.amateur
Chris.B[_3_]
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Posts: 1,001
Default Sub-Auroral Ion Drifts discovered to cause unusual purple aurora

On Sunday, 18 March 2018 06:49:32 UTC+1, RichA wrote:

More like a wish for than demand. I've seen aurora cover 2/3rds of the sky, at a measly 44 deg. N. latitude.


Measly? I'm @55N and only rarely get any purple rain on my parade.
It seems that your paranoia has quite a firm base after all.
Have you considered moving to somewhere more hospitable?
I hear Florida is nice, for those who routinely walk on water. ;-)
  #7  
Old March 18th 18, 10:01 AM posted to sci.astro.amateur
Paul Schlyter[_3_]
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Posts: 1,344
Default Sub-Auroral Ion Drifts discovered to cause unusual purple aurora

On Sat, 17 Mar 2018 22:49:29 -0700 (PDT), RichA
wrote:
Why do those who suffer from light pollution demand dark skies

for deep sky viewing? That's like living on the beach in Florida and
expecting local ski resorts!

More like wish for than demand. I've seen aurora cover 2/3rds of

the sky, at a measly 44 deg. N. latitude.

That must have happened in North America. And then your geomagnetic
latitude was more like 60 degrees.
 




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