APOD: Red Moon Rising (2011 Dec 16)

Comments and questions about the APOD on the main view screen.
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APOD: Red Moon Rising (2011 Dec 16)

Post by APOD Robot » Fri Dec 16, 2011 5:05 am

Image Red Moon Rising

Explanation: This surreal, wintry scene is a composite picture recorded on December 10 as the Moon rose behind the Zagros Mountains of Iran. A total lunar eclipse was already in progress. The image combines nearly 500 successive frames taken over 1.5 hours beginning in twilight as the eclipsed Moon steadily climbed above the rugged landscape. The reddened lunar disk and deep blue twilight make for a striking contrast, yet the contrasting colors have the same root cause. The eclipsed Moon is red because the Earth's umbral shadow is suffused with a faint red light. The ruddy illumination is from all the reddened sunsets and sunrises, as seen from a lunar perspective. But the sunsets and sunrises are reddened because the Earth's atmosphere scatters blue light more strongly than red, creating the twilight sky's dim, blue glow.

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geckzilla
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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by geckzilla » Fri Dec 16, 2011 5:07 am

Dwecember? :really?:

(click big image, look lower right)
Just call me "geck" because "zilla" is like a last name.

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by Beyond » Fri Dec 16, 2011 5:54 am

Dwight you are, geckzilla. As for the APOD, I've seen sticks that look like that, but they weren't red.
To find the Truth, you must go Beyond.

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Ann
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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by Ann » Fri Dec 16, 2011 9:44 am

Oshin Zakarian, who made this image, may or may not speak a lot of English, but it clearly isn't his mother tongue. It's so easy to make mistakes when you are juggling a foreign language... I can sympathize.

He has, on the other hand, created a rather spectacular Moon and sky image. I'm impressed. Thank you, Oshin.

Ann
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Koninda

Re: APOD: Red Moon Rising (2011 Dec 16)

Post by Koninda » Fri Dec 16, 2011 10:16 am

And here I thought this was a picture of a particularly large meteor streaking towards the earth! Your explanation will allow me to sleep easier tonight.

sea_bee_ay

Re: APOD: Red Moon Rising (2011 Dec 16)

Post by sea_bee_ay » Fri Dec 16, 2011 11:08 am

I think the first posted comment here misses the point of APOD completely. It is unbecoming to make such a petty comment, sardonically or otherwise. I would have no idea how to write any of the months of the year in Persian myself, I wish I was that clever, and so I would like to applaud the photographer for both his technical and linguistic abilities. In my opinion the image is original and thought provoking and, therefore, everything an APOD should aspire to be. Thank you and goodbye.

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by nstahl » Fri Dec 16, 2011 11:58 am

It is a striking image and a lot of work or else some respectable expertise or both. I agree it's a very good APOD.

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by geckzilla » Fri Dec 16, 2011 12:55 pm

Hey, it won't ever get corrected if no one points it out!
Just call me "geck" because "zilla" is like a last name.

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owlice
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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by owlice » Fri Dec 16, 2011 12:56 pm

It's clearly a typo; Oshin's English is excellent.

You can see more (amazing, fabulous, gorgeous) images from him in the post here.
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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by orin stepanek » Fri Dec 16, 2011 1:03 pm

Interesting APOD; I liked it! 8-) :)
Orin

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xuxa

Re: APOD: Red Moon Rising (2011 Dec 16)

Post by xuxa » Fri Dec 16, 2011 1:57 pm

is there a "simple" way 2 post a pic to this site?
its not on line but in my docs folder..maybe an email addy i could submit it 2?

thx

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by Ann » Fri Dec 16, 2011 1:58 pm

Right, geckzilla and owlice, I stand corrected. The spelling mistake must be a typo. And geckzilla, you're right, too: If no one points out the typos you've made, you may never correct them.

Then again, the typo queen is me, so I still sympathize!

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Tszabeau

Re: APOD: Red Moon Rising (2011 Dec 16)

Post by Tszabeau » Fri Dec 16, 2011 2:00 pm

Where are the arcs, normally, seen in astronomical timelapse? How do orbiting bodies create straight lines as depicted in this pic? For example, yesterday's APOD.

sajy

Re: APOD: Red Moon Rising (2011 Dec 16)

Post by sajy » Fri Dec 16, 2011 2:04 pm

What are the thin white lines running parallel to the images of the moon?

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by geckzilla » Fri Dec 16, 2011 2:23 pm

Day to day typos are fine. It's the ones that end up in important places like APODs that must be smitten.
Just call me "geck" because "zilla" is like a last name.

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by owlice » Fri Dec 16, 2011 3:00 pm

And smitten it has been; the replacement will show up shortly.
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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by Chris Peterson » Fri Dec 16, 2011 3:20 pm

Tszabeau wrote:Where are the arcs, normally, seen in astronomical timelapse? How do orbiting bodies create straight lines as depicted in this pic? For example, yesterday's APOD.
Stars along the celestial equator travel in a straight line, with stars north or south arcing around the north and south poles, respectively. During this eclipse, the Moon was only 22° from the celestial equator, so its path (and that of the stars around it) were not all that curved to begin with. In addition, this image was made at a long focal length, and therefore a narrow field of view (as seen by the fairly large apparent size of the actually small Moon). When you zoom in on the arc of a circumpolar object, the curvature gets smaller. So looking at only 1.5 hours of motion (22.5°) near the celestial equator simply doesn't produce very obvious arcing. It is there, however, if you look closely.

Besides these matters, there is the issue of how the spherical sky gets mapped onto a flat sensor when you make an image. Here again, field of view is important, as well as where in the sky you are centered, and the optical details of your lens.
Chris

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Chris Peterson
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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by Chris Peterson » Fri Dec 16, 2011 3:28 pm

sajy wrote:What are the thin white lines running parallel to the images of the moon?
Stars.
Chris

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by zloq » Fri Dec 16, 2011 3:29 pm

geckzilla wrote:Day to day typos are fine. It's the ones that end up in important places like APODs that must be smitten.
I don't mind obvious typos and grammar slips, but I think conceptual and quantitative errors in the APOD caption itself should be fixed with high priority. I have noticed a focus here on fixing errors of grammar and semantics, while mistakes directly pertinent to astronomical content remain uncorrected. Recent examples are: Factor of ten in W5 Pillar image scale (2000 instead of 200 ly), factor of at least two in light echo size (6 instead of >12 ly diameter), and the jupiter animation where the caption encourages people to see cloud motion in what is actually a static image being spun 360 degrees. Them three aint been smitten. I'm not sure what the mechanism is to get such captions corrected - but the procedure in place appears to view it more as a writing exercise rather than an accurate presentation of scientific information.

zloq

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by geckzilla » Fri Dec 16, 2011 3:33 pm

Oh, just send them an email. Their addresses are on the bottom of this page. http://apod.nasa.gov/apod/lib/about_apod.html
Just call me "geck" because "zilla" is like a last name.

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by zloq » Fri Dec 16, 2011 3:47 pm

geckzilla wrote:Oh, just send them an email.
Thanks - I will. I wasn't sure who had write permission on the captions and how the process worked. I guess I'll find out.

zloq

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by moonstruck » Fri Dec 16, 2011 4:20 pm

Very nice. Thanks, Oshin.

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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by bystander » Fri Dec 16, 2011 5:00 pm

owlice wrote:It's clearly a typo; Oshin's English is excellent.

You can see more (amazing, fabulous, gorgeous) images from him in the post here.
And at TWAN.
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Re: APOD: Red Moon Rising (2011 Dec 16)

Post by Half Slow » Fri Dec 16, 2011 5:11 pm

You can see more (amazing, fabulous, gorgeous) images from him in the post here.[/quote]
Wow! What a great gallery of images. Choosing between them must have been quite a trial!

saturn2

Re: APOD: Red Moon Rising (2011 Dec 16)

Post by saturn2 » Sat Dec 17, 2011 12:39 am

Nearly 500 seccessive frames taken over 1.5 hours
Many work Congratulations