APOD: Green Flash and Super Moon (2012 May 10)

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APOD: Green Flash and Super Moon (2012 May 10)

Post by APOD Robot » Thu May 10, 2012 4:06 am

Image Green Flash and Super Moon

Explanation: It was really not about superheroes as on May 6 the much touted Super Moon, the largest Full Moon of 2012, rose over this otherwise peaceful harbor. And no supervillains were present either as boats gently rocked at their moorings near the checkerboard La Perdrix lighthouse on the coast of Brittany, France. But the rise of the Super Moon was preceded by a Green Flash, captured in the first frame of this timelapse video recorded that night. The cropped image of the frame, a two second long exposure, shows the strongly colored flash left of the lighted buoy near picture center. While the Super Moon was enjoyed at locations all around the world, the circumstances that produced the Green Flash were more restrictive. Green flashes for both Sun and Moon are caused by atmospheric refraction enhanced by long, low, sight lines and strong atmospheric temperature gradients often favored by a sea horizon.

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neufer
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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by neufer » Thu May 10, 2012 4:13 am

So it was green cheese after all :!:
Art Neuendorffer

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by pausanias » Thu May 10, 2012 4:41 am

Can anyone explain why the APOD website features so few actual astronomical images (as in, taken by a research telescope) these days? There's a lot of moon photography, scenic pictures of conjunctions, montages, space shuttle nostalgia... Would it be possible to get back to actual images taken by the world's best telescopes?

I am sorry to be negative, but it really has been weeks and weeks of scenery lately and not so much of what's new in astronomy.

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by owlice » Thu May 10, 2012 6:03 am

Because APOD has a broader definition of astronomical images than you have, pausanias, as it's not limited to images "taken by a research telescope."
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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by Ann » Thu May 10, 2012 6:29 am

Color Commentator

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by Moonlady » Thu May 10, 2012 10:48 am

Yay...I am SuperMoonlady today :mrgreen:

I thought green flash can appear only while sunset... learning here becomes never boring!

K1NS

Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by K1NS » Thu May 10, 2012 11:24 am

Triple Green Flash

The day of our wedding, at sunset on our honeymoon, my new wife and I were having an evening cocktail on the balcony of our hotel room overlooking the sea in Newport, California. We had a spotting scope set up and we both had binoculars, and as the sun set we both saw, very clearly, a triple green flash, as the refracted light "bleebed" into 3 distinct spots. I have never seen this phenomenum before or since.

Needless to say, we took this as a good omen for what has become a long and happy marriage.

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by starstruck » Thu May 10, 2012 11:37 am

Well, must say, I really enjoy the variety and breadth of images and subjects featured on APOD; it is what makes it fascinating and stimulating and more than worthwhile coming back to see every day. Almost without exception, there is something new to be learned. And the comments on Asterisk are always enlightening and/or entertaining too! So, today's pic is another good example. I've never seen a green flash at sunrise or sunset myself yet, but that's not going to stop me from looking out for one. I never actually realised you could get the same effect with the moon too, so there you go, something new. Any road up, as we say in my part of the world, this is a visually pleasing composition :D . . and I enjoyed revealing the geographical location of the photo by zooming out of the map at the 'on the coast' link. Ta very much.

(and hey, congrats K1NS, great story!)

Jsquared

Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by Jsquared » Thu May 10, 2012 11:48 am

If the sun is setting to the left of the image, as suggested by the sunlight on the boats, why is the green flash at 90 degrees to it instead of 180?

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by Moonlady » Thu May 10, 2012 12:06 pm

starstruck wrote:Well, must say, I really enjoy the variety and breadth of images and subjects featured on APOD; it is what makes it fascinating and stimulating and more than worthwhile coming back to see every day. Almost without exception, there is something new to be learned. And the comments on Asterisk are always enlightening and/or entertaining too! So, today's pic is another good example. I've never seen a green flash at sunrise or sunset myself yet, but that's not going to stop me from looking out for one. I never actually realised you could get the same effect with the moon too, so there you go, something new. Any road up, as we say in my part of the world, this is a visually pleasing composition :D . . and I enjoyed revealing the geographical location of the photo by zooming out of the map at the 'on the coast' link. Ta very much.
Where is the "like" button when you need one?

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by geckzilla » Thu May 10, 2012 12:09 pm

You are expected to exercise your brain a little bit here and provide some input beyond a single word. ;)
Just call me "geck" because "zilla" is like a last name.

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by geckzilla » Thu May 10, 2012 12:11 pm

Jsquared wrote:If the sun is setting to the left of the image, as suggested by the sunlight on the boats, why is the green flash at 90 degrees to it instead of 180?
Did you consider the presence of a light other than the sun out of frame? If you check the video link, you can see the light to the left is indeed static.
Just call me "geck" because "zilla" is like a last name.

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Vue Gènérale et Feu de la Perdrix

Post by neufer » Thu May 10, 2012 12:28 pm

Art Neuendorffer

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by orin stepanek » Thu May 10, 2012 12:49 pm

I liked today's picture; it's going to make a nice background! 8-) Kudos to Laurent Laveder! :thumb_up: :thumb_up:
Orin

Smile today; tomorrow's another day!

jimchar

Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by jimchar » Thu May 10, 2012 1:26 pm

Only parts (mostly northern) of Brittany have eastern facing shorelines.

In which town/harbor was this photo taken? Was it Loctudy?

http://maps.google.com/maps?q=Loctudy,+ ... ce&t=m&z=8

Thank you.

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by SLake » Thu May 10, 2012 1:38 pm

What did the mariners of old call the green flash? I've forgotten.

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neufer
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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by neufer » Thu May 10, 2012 2:17 pm

jimchar wrote:
Only parts (mostly northern) of Brittany have eastern facing shorelines.

In which town/harbor was this photo taken? Was it Loctudy?
Yes: http://asterisk.apod.com/viewtopic.php? ... 10#p175284
Art Neuendorffer

bolenan

Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by bolenan » Thu May 10, 2012 2:48 pm

Is there PEPELATS on the photo?

Picture from Kin-Dza-Dza film:
Image

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by moonstruck » Thu May 10, 2012 3:25 pm

pausanias wrote:Can anyone explain why the APOD website features so few actual astronomical images (as in, taken by a research telescope) these days? There's a lot of moon photography, scenic pictures of conjunctions, montages, space shuttle nostalgia... Would it be possible to get back to actual images taken by the world's best telescopes?

I am sorry to be negative, but it really has been weeks and weeks of scenery lately and not so much of what's new in astronomy.

Go to the archives and you can spend several years looking back at all the space pictures of your choice. Today's APOD was super.

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by pausanias » Thu May 10, 2012 8:04 pm

I didn't say the scenery pictures are bad. I agree that most of them are beautiful.

I was just remarking that whereas before, there seemed to be an even mix of scenery and scientific images, now the posts now seem disproportionately dominated by scenery images.

And yes, in the archive, which I've downloaded the entirety of, there used to be an even balance of all different types of images. The change/bias towards scenery has been recent (like in the past few months).

petunia

Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by petunia » Thu May 10, 2012 8:52 pm

Makes me pine for the Keys 8-)

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by LocalColor » Thu May 10, 2012 8:53 pm

Wonderful catch! Congrats on it making the APOD.

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by Beyond » Thu May 10, 2012 11:02 pm

geckzilla wrote:You are expected to exercise your brain a little bit here and provide some input beyond a single word. ;)
I like.
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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by Moonlady » Fri May 11, 2012 8:54 pm

geckzilla wrote:You are expected to exercise your brain a little bit here and provide some input beyond a single word. ;)
Yes, ma'am!

How about this ? : :thumb_up:


okeeeeeeeeeeey I know now. a smiley is not enough too, right?... I will use latin letters, form words and with help of grammar rules, build a sentence to express my thoughts and feelings...

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Re: APOD: Green Flash and Super Moon (2012 May 10)

Post by geckzilla » Fri May 11, 2012 11:59 pm

That's the spirit!
Just call me "geck" because "zilla" is like a last name.