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ApacheTrout

Space Weather Discussion

503 posts in this topic

Are Bz and Kp related? For example will a positive Bz hurt the Kp or are the 2 indicies unrelated? 

Bz is measured a million miles out in space at the L1 point, and Kp is derived from how disturbed a global network of ground level magnetometers are.

 

A lower Bz will allow a greater disruption of the earths magnetic field and the Kp will rise as a result.

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After years of trying to catch the odd spike to Kp 7, I'm not sure what I expected hours and hours of Kp 8 to look like, but it sure wasn't this. lol

Like you said, we're waiting for a substorm.  

 

Even with the 6 hours of Kp 9 in 2003, the actual show lasted maybe an hour before reverting to the bland green arc along the horizon.

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Like you said, we're waiting for a substorm.  

 

Even with the 6 hours of Kp 9 in 2003, the actual show lasted maybe an hour before reverting to the bland green arc along the horizon.

Yeah? Wow, I didn't realize that. I only had a passing interest back then, so I don't think I spent more than a few moments looking upward for that one. It's pretty incredible to read the accounts of zenithal coronas over Chicago and NYC in 1859, 1882, etc., knowing how difficult it is to even see diffuse greens on the horizon.

 

I got lazy and hooked my camera up to an intervalometer for some warmup time indoors. Will check again in a bit.

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I noticed the faint green on the northern horizon earlier too.

 

Yeah? Wow, I didn't realize that. I only had a passing interest back then, so I don't think I spent more than a few moments looking upward for that one. It's pretty incredible to read the accounts of zenithal coronas over Chicago and NYC in 1859, 1882, etc., knowing how difficult it is to even see diffuse greens on the horizon.

 

I got lazy and hooked my camera up to an intervalometer for some warmup time indoors. Will check again in a bit.

Time for Eek to post his 2003 corona.

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Does the human eye see this. The pics out of Finland are surreal

IMG_20150317_210858.jpg

Reds and violets are visible from the darkest locations in the strongest storms.  Cameras will pick reds up easily, but the human eye won't.  Most photos are long exposed and exaggerated in that sense,  but the one you posted is probably very close to accurate.  

 

I've only seen reds and violets twice.

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I saw stuff like that in 2003.

 

 

Reds and violets are visible from the darkest locations in the strongest storms.  Cameras will pick reds up easily, but the human eye won't.  Most photos are long exposed and exaggerated in that sense,  but the one you posted is probably very close to accurate.  

 

I've only seen reds and violets twice.

 

In the Lakes Region? That's awesome.

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Reds and violets are visible from the darkest locations in the strongest storms. Cameras will pick reds up easily, but the human eye won't. Most photos are long exposed and exaggerated in that sense, but the one you posted is probably very close to accurate.

I've only seen reds and violets twice.

wow

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In the Lakes Region? That's awesome.

03 was insane. I was working in Bedford at the time. It wasn't even dark yet and the show was amazing. Lots of pinks and greens like Eek's pic.

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03 was insane. I was working in Bedford at the time. It wasn't even dark yet and the show was amazing. Lots of pinks and greens like Eek's pic.

 

Bedford, in SNH? That's insane. I'll be doing some driving next time something like that happens.

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In the Lakes Region? That's awesome.

I picked this up as a hobby from 2001-2003... you could see the lights about 1-2 times per month... the sun was just completely unhinged those years.  

 

I hope you've made money off of these.

Not much money to be made from small, grainy images.  Would be nice though!

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Eek,

 

Do you have the link for that image that monitors the Bz/Bt index numbers?

 

I used it last time, but can't find it now.

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this has got to be the same night i saw this on my way to canada started seeing it in vermont and when i got to my grandparents in southern quebec it was just amazing!!! 

A few more from that night.

 

phoca_thumb_l_3.jpg

 

 

 

phoca_thumb_l_4.jpg

 

phoca_thumb_l_5.jpg

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Nevermind, found the link....

 

I figured it is easier to watch the Bz than stare outside or take long exposure pics.

 

edit: thanks for the response anyway :)

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Yes, 03 was amazing. Tonight, even with crap Bz, there's still a definite green glow to the north. Kp=8 will do that I guess. Without a doubt a kick in the nutsack the Bz shooting at like -18 all afternoon to head to -4ish right around dark, only to remain there now.

...think we're done?

Btw, took some pics, not worth uploading. What are you ruining for ISO on those pics? Everything I took tonight was horrifically grainy.

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03 was insane. I was working in Bedford at the time. It wasn't even dark yet and the show was amazing. Lots of pinks and greens like Eek's pic.

Yep, i remember watching it in a field in Middlebury, Vt. Fantastic show.

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Btw, took some pics, not worth uploading. What are you ruining for ISO on those pics? Everything I took tonight was horrifically grainy.

What you can get away with for ISO settings totally depends on your camera.  If you've got noise, it's set too high.

 

My camera is over a decade old and has horrible noise above ISO 200.  New cameras supposedly maintain decent quality and go up to 1600 or even 3200.

 

Secret tip:  Leave your camera outside.  Excessive grain/noise issues can be caused by heat on your cameras sensor, so keeping it cold makes a big difference.  You can really see this in action if you look at dendrites webcam in the winter vs summer.

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Saw some in Lowell MA of all places around 1989 or so

Cloudy to my north attm.

 

Probably.  I was at Lyndon at the time and it was an awesome show.   I think it was visible down to Florida on that one.

 

Just came in from taking a look and didn't see anything.  I don't have the best view to the north due to hills though.  The wind makes it tougher to stay out too long unless you're dressed for it.

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