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APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Wed Jan 13, 2021 5:05 am
by APOD Robot
Arches Across an Arctic Sky
Explanation: What are these two giant arches across the sky? Perhaps the more familiar one, on the left, is the central band of our
Milky Way Galaxy. This grand disk of stars and nebulas here appears to encircle much of the southern sky. Visible below the stellar arch is the
rusty-orange planet
Mars and the extended
Andromeda galaxy. For a few minutes during this
cold arctic night, a second
giant arch appeared to the right, encircling part of the northern sky: an
aurora. Auroras are much closer than stars as they are composed of glowing air high in
Earth's atmosphere. Visible outside the
green auroral arch is the group of stars popularly
known as the
Big Dipper. The
featured digital composite of 18 images was captured in mid-December over the
Lofoten Islands in
Norway.
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Wed Jan 13, 2021 11:29 am
by zeecatman
Beautiful composite image!
Given the location and approximate date, I gave my best shot at identifying some of the other bright objects visible in the image. Please let me know if I made any mistakes. Does anyone have any idea what the bright-ish spot just above the horizon on the far left of the milky way could be?
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Wed Jan 13, 2021 12:14 pm
by orin stepanek
zeecatman wrote: ↑Wed Jan 13, 2021 11:29 am
ArcticSky_
Beautiful composite image!
Given the location and approximate date, I gave my best shot at identifying some of the other bright objects visible in the image. Please let me know if I made any mistakes. Does anyone have any idea what the bright-ish spot just above the horizon on the far left of the milky way could be?
[/quote]
[attachment=0]ArcticSky_Cobianchi_1080_annotated.jpg
Don't know if this is what you are looking for?
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Wed Jan 13, 2021 2:34 pm
by Bill Adair
Beautiful photo! One of the best I've seen in the fifteen years (or so) I've been following this site.
What might the person with the flashlight be doing?
I grew up on a farm in Missouri USA with no running water, so figured he might have had too much water or other liquids to drink before retiring for the night.
There appears to be a very tiny typo at the end of the last sentence of the photo description. To your credit it's the very first typo I've ever noticed on this site in all the years I've been watching!
Bill Adair
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Wed Jan 13, 2021 3:19 pm
by Glasterpiece
Why would the Milky Way ever appear as a tight arc like that rather than something closer to a straight line? Would latitude do that?
Thank you.
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Wed Jan 13, 2021 3:23 pm
by Chris Peterson
Glasterpiece wrote: ↑Wed Jan 13, 2021 3:19 pm
Why would the Milky Way ever appear as a tight arc like that rather than something closer to a straight line? Would latitude do that?
Thank you.
Because you're seeing a large section of a sphere projected onto a plane.
No arches in the photograph
Posted: Wed Jan 13, 2021 4:25 pm
by geoffrey.landis
Yeah, I'm a little puzzled by the photo being described as "arches".
There are no arches in the picture. What visually looks like arches is simply the image being badly distorted, due to compressing about 300 degrees of panorama onto a flat page.
Re: No arches in the photograph
Posted: Wed Jan 13, 2021 4:42 pm
by Chris Peterson
geoffrey.landis wrote: ↑Wed Jan 13, 2021 4:25 pm
Yeah, I'm a little puzzled by the photo being described as "arches".
There are no arches in the picture. What visually looks like arches is simply the image being badly distorted, due to compressing about 300 degrees of panorama onto a flat page.
So... if you were standing directly underneath the Gateway Arch in St. Louis, you wouldn't describe it as an arch?
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Wed Jan 13, 2021 7:52 pm
by BillBixby
Bill Adair wrote: ↑Wed Jan 13, 2021 2:34 pm
Beautiful photo! One of the best I've seen in the fifteen years (or so) I've been following this site.
What might the person with the flashlight be doing?
I grew up on a farm in Missouri USA with no running water, so figured he might have had too much water or other liquids to drink before retiring for the night.
There appears to be a very tiny typo at the end of the last sentence of the photo description. To your credit it's the very first typo I've ever noticed on this site in all the years I've been watching!
Bill Adair
The person in the photo is demonstrating that the stars are not so far away as we are led to think. One has been taken from the sky and is being held in hand to enlighten us of the impossibilities. Let us hope it does not go nova while being held so close.
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Thu Jan 14, 2021 12:19 am
by WWW
A small building with "two giant arches" in the background? Where have we seen that before? Looks like there might also be a drive through lane along the front of that building!
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Thu Jan 14, 2021 1:51 am
by neufer
WWW wrote: ↑Thu Jan 14, 2021 12:19 am
A small building with "two giant arches" in the background? Where have we seen that before?
Looks like there might also be a drive through lane along the front of that building!
https://en.wikipedia.org/wiki/The_Lexus_and_the_Olive_Tree#Golden_Arches_theory wrote:
<<
The Lexus and the Olive Tree : Understanding Globalization is a 1999 book by Thomas L. Friedman that posits that the world is currently undergoing two struggles: the drive for prosperity and development, symbolized by the Lexus LS, and the desire to retain identity and traditions, symbolized by the olive tree. The book puts forward a capitalist peace theory, first published as an opinion piece in The New York Times in December 1996, called the Golden Arches Theory of Conflict Prevention; although slightly tongue-in-cheek, it states:
No two countries that both had McDonald's had fought a war against each other since each got its McDonald's.
He supported that observation, as a theory, by stating that when a country has reached an economic development where it has a middle class strong enough to support a McDonald's network, it would become a "McDonald's country", and will not be interested in fighting wars anymore.
Shortly after the book was published, NATO bombed Yugoslavia. On the first day of the bombing, McDonald's restaurants in Belgrade were demolished by the Serbian people and were rebuilt only after the bombing ended. In the 2000 edition of the book, Friedman argued that this exception proved the rule: the war ended quickly, he argued, partly because the Serbian population did not want to lose their place in a global system "symbolised by McDonald's".>>
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Thu Jan 14, 2021 6:42 am
by zeecatman
orin stepanek wrote: ↑Wed Jan 13, 2021 12:14 pm
ArcticSky_Cobianchi_1080_annotated.jpg
Don't know if this is what you are looking for?
Yes, this one's perfect
Re: APOD: Arches Across an Arctic Sky (2021 Jan 13)
Posted: Thu Jan 14, 2021 7:16 am
by VictorBorun
Re: No arches in the photograph
Posted: Mon Feb 15, 2021 5:55 pm
by geoffrey.landis
Chris Peterson wrote: ↑Wed Jan 13, 2021 4:42 pm
So... if you were standing directly underneath the Gateway Arch in St. Louis, you wouldn't describe it as an arch?
Exactly the opposite. This APOD image is something that is
not actually an arch, but
looks like an arch in the picture. What you are describing is something that
is an arch, but would
not look like an arch in the picture.
Re: No arches in the photograph
Posted: Mon Feb 15, 2021 6:13 pm
by Chris Peterson
geoffrey.landis wrote: ↑Mon Feb 15, 2021 5:55 pm
Chris Peterson wrote: ↑Wed Jan 13, 2021 4:42 pm
So... if you were standing directly underneath the Gateway Arch in St. Louis, you wouldn't describe it as an arch?
Exactly the opposite. This APOD image is something that is
not actually an arch, but
looks like an arch in the picture. What you are describing is something that
is an arch, but would
not look like an arch in the picture.
Well, an arch is just a disc (or half of one) with a non-uniform radial density. Just like the Milky Way.