Author Topic: AURORA BOREALIS: How far south will they go?  (Read 1229 times)

Yowbarb

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AURORA BOREALIS: How far south will they go?
« on: January 30, 2012, 04:15:25 PM »
Spaceweather http://spaceweather.com/

ARIZONA AURORAS: The geomagnetic storm of Jan. 24th produced some spectacular auroras around the Arctic Circle. Unnoticed by most observers, the Northern Lights reached all the way down to Arizona. In Payson, AZ, a robotic camera system operated by amateur astronomer Chris Schur captured the telltale green glow:
"From sunrise to sunset, our automated robotic camera system with a fish-eye lens recorded the northern half of the sky every five minutes," says Schur. "When reviewing all the frames taken during this night of massive auroral storming to the north, I discovered that the display had reached us, too. The normally neutral grey sky to the north suddenly at around 3am glowed an intense green hue for only about half an hour, then returned to normal. Although we have some airglow visible on many nights here photographically, we never get one this bright. I suspect I was actually getting the topmost layers of the aurora which was seen in its entirety in the northern US that evening."

The auroras were not visible to the unaided eye. It took a five-minute exposure by a low-light astronomy camera to reveal the faint and distant lights. These "deep-sky auroras" are a promise of bigger things to come--maybe even naked-eye auroras in Arizona--as solar maximum approaches in 2013. "The sun," says Schur, "is finally waking up!"

Yowbarb

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Re: AURORA BOREALIS: How far south will they go?
« Reply #1 on: May 20, 2013, 08:17:42 AM »
http://www.spaceweather.com/

WEEKEND CME STRIKES: Over the weekend, a pair of CMEs hit Earth--one on May 18th (0100 UT) and another on May 19th (2250 UT). The impacts, especially the first one, rattled Earth's magnetic field and sparked Northern Lights visible as far south as Colorado. Some of the brightest appeared over Cape Cod, Massachusetts, where photographer Chris Cook took this self-portrait

"This is the first time since September 2005 that the lights have been visible from here," says Cook. " It was a beautiful display. During the peak, which lasted about 20 minutes, I could see red and pink pillars with my unaided eye." With only a short exposure, Cook's camera revealed the true depth of color shown above.
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Spaceweather Photo Gallery of Auroras:

http://spaceweather.com/gallery/index.php?title=aurora&title2=lights

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