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APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 4:05 am
by APOD Robot
Aurora over Maine
Explanation: It has been a good week for auroras. Earlier this month active sunspot
region 2158 rotated into view and unleashed a series of
flares and plasma ejections into the Solar System during its journey across the Sun's disk. In particular, a pair of
Coronal Mass Ejections (CMEs)
impacted the Earth's
magnetosphere toward the end of last week, creating the most intense
geomagnetic storm so far this year. Although power outages were feared by some, the most dramatic effects of these
impacting plasma clouds were auroras seen as far south as
Wisconsin, USA. In the
featured image taken last Friday night, rays and sheets of multicolored auroras were captured over
Acadia National Park, in
Maine,
USA. Since another CME plasma cloud is currently approaching the Earth, tonight offers another good chance to see an
impressive auroral display.
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Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 12:58 pm
by Boomer12k
WOW....the violet and Rose colored curtain is AWESOME...as well as the "alien" green.
Is that a woman laying on her back????
OH...er....um....well.....NICE AURORA!!!!
:---[===] *
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 1:30 pm
by starsurfer
Boomer12k wrote:Is that a woman laying on her back????
OH...er....um....well.....NICE AURORA!!!!
:---[===] *
BAN THIS SICK FILTH!
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 1:33 pm
by geckzilla
Blink...blink... simmer down, now. Simmer down. It's too early in the morning for banning of suggestively shaped mountains.
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 2:12 pm
by owlice
This is a lovely image! Now if only I could get to Maine before sundown tonight, somewhere with clear dark skies so I could see an aurora with mine own eyes...
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 2:36 pm
by Cousin Ricky
owlice wrote:This is a lovely image! Now if only I could get to Maine before sundown tonight, somewhere with clear dark skies so I could see an aurora with mine own eyes...
You think you live far from aurora country? At least
you can make it by car if you can avoid the radar guns.
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 3:41 pm
by Beyond
Boomer12k wrote:...as well as the "alien" green.
Wadda ya mean "alien"?Ok, Mr. :---[===] *, how did you find us out?
Beyond
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 4:00 pm
by Bellerophon
I recognize the vantage point in the photo. It's taken from the south end of Jordan Pond, looking northward. The suggestive shapes are called "The Bubbles." As usual, I'm glad I was keeping abreast of APOD!
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Wed Sep 17, 2014 8:43 pm
by ThePiper
.
In this picture we can see auroras in almost all colors of the spectre. From nearly ultraviolet down to red . Except blue. Why? 
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Thu Sep 18, 2014 1:20 am
by saturno2
Beautiful image
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Thu Sep 18, 2014 1:53 am
by alter-ego
ThePiper wrote:.
In this picture we can see auroras in almost all colors of the spectre. From nearly ultraviolet down to red . Except blue. Why?
The dominant (naked-eye-visible) auroral photon energies do not typically include pure blue.
http://www.swpc.noaa.gov/ovation/documents/About_Aurora.html wrote:
Colors of the aurora: The most common color is a pale yellowish green color at a very specific wavelength (557.7 nm). It is produced by atomic oxygen excited to the 1S state (singlet S state). The other common color is a red glow at 630.0 nm which is produced by oxygen excited to the 1D state (singlet D state). Sometimes the lower edges of aurora rays can be a bluish purple (427.8 nm) from molecular nitrogen in the 2P state. And if you see aurora near sunrise or sunset, the sunlight hits the tops of the auroral rays and ionizes the excited nitrogen to create a purple color. There are many other colors in the aurora but they are either too dim to see with the naked eye or they are outside the visible spectrum either in the infrared or ultraviolet (where the human eye can?t see them).
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Thu Sep 18, 2014 2:08 am
by Boomer12k
Beyond wrote:Boomer12k wrote:...as well as the "alien" green.
Wadda ya mean "alien"?Ok, Mr. :---[===] *, how did you find us out?
Beyond
I am well aware of the Squirrels and their connections....they have been after me for years. It is a conspiracy I tell you....they are after me....yeah...I know too much.
I have this whole Squirrel Conspiracy Theory that I tell the ladies at the store and the bank. They just laugh and think it is funny. But every story I tell them is true. OK...my conclusions could be wrong...and if it was just me, I might BE crazy...but it is not just me....
So...when I see "alien green"...in an aurora....I know....WINK, WINK, NUDGE, NUDGE.....
:---[===] *
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Thu Sep 18, 2014 6:49 am
by LocalColor
We were so hoping to see the aurora from central Idaho, but the "storm" arrived several hours before sundown.
Lovely photo and thank you for sharing this awesome event.
Re: APOD: Aurora over Maine (2014 Sep 17)
Posted: Thu Sep 18, 2014 7:52 pm
by DavidLeodis
In the information that is available through the "featured image" link in the "the featured image taken last Friday night" it states the image was taken September 12 2014 (thus Friday) but in the Exif data that is directly available it states it was taken "2014:09:14 03:10:22" thus in the early hours of Sunday. I'm
.
It's a great image though.
