APOD: A Paper Moon Solar Eclipse (2021 Jun 28)

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APOD Robot
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APOD: A Paper Moon Solar Eclipse (2021 Jun 28)

Post by APOD Robot » Mon Jun 28, 2021 4:05 am

Image A Paper Moon Solar Eclipse

Explanation: It may look like a paper Moon. Sailing past a canvas Sun. But those are not cardboard clouds. And it's not make believe.  The featured picture of an orange colored sky is real -- a digital composite of two exposures of the solar eclipse that occurred earlier this month. The first exposure was taken with a regular telescope that captured an overexposed Sun and an underexposed Moon, while the second image was taken with a solar telescope that captured details of the chromosphere of the background Sun. The Sun's canvas-like texture was brought up by imaging in a very specific shade of red emitted by hydrogen. Several prominences can be seen around the Sun's edge. The image was captured just before sunset from Xilingol, Inner Mongolia, China. It's also not make-believe to imagine that the Moon is made of dense rock, the Sun is made of hot gas, and clouds are made of floating droplets of water and ice.

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Ann
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Re: APOD: A Paper Moon Solar Eclipse (2021 Jun 28)

Post by Ann » Mon Jun 28, 2021 4:17 am

It's an amazing image. Stunning!

Ann
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UweGermany

Re: APOD: A Paper Moon Solar Eclipse (2021 Jun 28)

Post by UweGermany » Mon Jun 28, 2021 8:53 am

'Pacman got a ghost' :wink: . Lovely composite! Thanks again for a great picture!

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orin stepanek
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Re: APOD: A Paper Moon Solar Eclipse (2021 Jun 28)

Post by orin stepanek » Mon Jun 28, 2021 12:51 pm

PaperMoonSolarEclipse_Letian_3000.jpg
A Paper moon and Canvas Sun; turns out to be a nice combination! :D

d6a07ee7c87bfaf14a7b9114c23c8037.jpg
OMG Kitty! What are you doing! 8-) Now that's what I call a fur ball! :wink:
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Re: APOD: A Paper Moon Solar Eclipse (2021 Jun 28)

Post by geoffrey.landis » Mon Jun 28, 2021 2:29 pm

I'm puzzled, why is the left limb of the moon outlined as a thin yellow line as it crosses the solar disk?
Is that an artifact of unsharp masking, or something?

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Chris Peterson
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Re: APOD: A Paper Moon Solar Eclipse (2021 Jun 28)

Post by Chris Peterson » Mon Jun 28, 2021 2:31 pm

geoffrey.landis wrote:
Mon Jun 28, 2021 2:29 pm
I'm puzzled, why is the left limb of the moon outlined as a thin yellow line as it crosses the solar disk?
Is that an artifact of unsharp masking, or something?
I'd say it's an artifact of the layering method used to combine the white light and Ha images, which have very different intensity profiles across the disk of the Sun.
Chris

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Re: APOD: A Paper Moon Solar Eclipse (2021 Jun 28)

Post by neufer » Mon Jun 28, 2021 4:59 pm

Click to play embedded YouTube video.
Guest wrote:
Mon Jun 28, 2021 4:24 pm


Plasma.

https://www.youtube.com/watch?v=sLkGSV9WDMA
Art Neuendorffer

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A True Story

Post by neufer » Wed Jun 30, 2021 8:34 pm

https://en.wikipedia.org/wiki/A_True_Story wrote:
<<A True Story (Ancient Greek: Ἀληθῆ διηγήματα; Latin: Vera Historia or Latin: Verae Historiae) is a long novella written in the second century AD by Lucian of Samosata, a Greek-speaking author of Assyrian descent. It is the earliest known work of fiction to include travel to outer space, alien lifeforms, and interplanetary warfare.

The narrative begins with Lucian and his fellow travelers journeying out past the Pillars of Heracles. Blown off course by a storm, they come to an island with a river of wine filled with fish and bears, a marker indicating that Heracles and Dionysus have traveled to this point, and trees that look like women. Shortly after leaving the island, they are caught up by a whirlwind and taken to the Moon, where they find themselves embroiled in a full-scale war between the king of the Moon and the king of the Sun over colonization of the Morning Star. Both armies include bizarre hybrid lifeforms. The armies of the Sun win the war by clouding over the Moon and blocking out the Sun's light. Both parties come to a peace agreement.

After returning to Earth, the adventurers are swallowed by a 200-mile-long whale, in whose belly they discover a variety of fish people, against whom they wage war and triumph. They kill the whale by starting a bonfire and escape by propping its mouth open. Next, they encounter a sea of milk, an island of cheese, and the Island of the Blessed. There, Lucian meets the heroes of the Trojan War, other mythical men and animals, as well as Homer and Pythagoras. They find sinners being punished, the worst of them being the ones who had written books with lies and fantasies, including Herodotus and Ctesias. After leaving the Island of the Blessed, they deliver a letter to Calypso given to them by Odysseus explaining that he wishes he had stayed with her so he could have lived eternally. They discover a chasm in the ocean, but eventually sail around it, discover a far-off continent and decide to explore it. The book ends abruptly with Lucian stating that their future adventures will be described in the upcoming sequels, a promise which a disappointed scholiast described as "the biggest lie of all".>>
Art Neuendorffer