Cool astronomy photos

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Witness
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Re: Cool astronomy photos

Post by Witness » Fri Jan 11, 2019 5:07 am

The Chinese rover has awakened and taken a picture of the lander (he's mirrored next to the flag):

Image
https://gbtimes.com/yutu-2-rover-reawak ... objectives

I'm astonished by the whitish stones looking out of the regolith. Don't remember anything similar on the other face.

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sparks
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Re: Cool astronomy photos

Post by sparks » Fri Jan 11, 2019 5:39 am

Perhaps it comes down to better camera technology?
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Rob Lister
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Re: Cool astronomy photos

Post by Rob Lister » Fri Jan 11, 2019 10:11 am

sparks wrote:
Fri Jan 11, 2019 5:39 am
Perhaps it comes down to better camera technology?
Concur

Image

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Abdul Alhazred
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Re: Cool astronomy photos

Post by Abdul Alhazred » Fri Jan 11, 2019 10:17 am

Isn't there supposed to be a significant difference in geology between the two sides?
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Re: Cool astronomy photos

Post by Rob Lister » Fri Jan 11, 2019 10:24 am

Abdul Alhazred wrote:
Fri Jan 11, 2019 10:17 am
Isn't there supposed to be a significant difference in geology between the two sides?
yea

Image

https://slate.com/technology/2014/07/th ... erent.html

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Re: Cool astronomy photos

Post by Anaxagoras » Fri Jan 11, 2019 11:24 am

I wonder what that green thing is in the upper left quadrant. A galaxy?
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Re: Cool astronomy photos

Post by Doctor X » Fri Jan 11, 2019 11:28 am

Your Mom?

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Re: Cool astronomy photos

Post by Anaxagoras » Fri Jan 11, 2019 11:33 am

😡
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Witness
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Re: Cool astronomy photos

Post by Witness » Sat Jan 12, 2019 4:32 am

sparks wrote:
Fri Jan 11, 2019 5:39 am
Perhaps it comes down to better camera technology?
Image

Hmmm...

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Witness
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Re: Cool astronomy photos

Post by Witness » Sat Jan 12, 2019 5:10 am

Image

Where are the whitish stones? A matter of light direction?

Image

https://gizmodo.com/see-the-first-panor ... 1831671449

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Re: Cool astronomy photos

Post by Witness » Tue Jan 15, 2019 3:09 am


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Re: Cool astronomy photos

Post by Witness » Wed Jan 16, 2019 12:47 am


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Re: Cool astronomy photos

Post by Witness » Fri Jan 25, 2019 3:43 am


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Re: Cool astronomy photos

Post by sparks » Fri Jan 25, 2019 3:44 am

Spectacular.

And faked.
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Re: Cool astronomy photos

Post by Witness » Fri Jan 25, 2019 4:01 am

sparks wrote:
Fri Jan 25, 2019 3:44 am
faked.
Image

https://www.youtube.com/watch?v=Dh0x-6UBkQA

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Re: Cool astronomy photos

Post by sparks » Fri Jan 25, 2019 4:26 am

Double down.

Sorry.

No fucking camera ever made could take that video as ... given.
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Re: Cool astronomy photos

Post by Witness » Fri Jan 25, 2019 4:39 am

Okay, I'll be happy to learn – as you made the claim. Or are you just pulling my leg?

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Re: Cool astronomy photos

Post by sparks » Fri Jan 25, 2019 4:50 am

Once again, I offer no proof as I didn't make the claim. You did.

Now then, you and I have both looked through telescopes at distant objects (excluding Doc X's Mom of course) and we both know how difficult it is to take a decent picture of even so close an object as the Moon. To get a shot of Saturn 'rising' with the brightness of the Moon in the foreground is just too damned ridiculous to contemplate.

I remain skeptical unless and until you offer the appropriate evidences.

I think that just about sums it up my friend.
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Re: Cool astronomy photos

Post by Witness » Fri Jan 25, 2019 5:16 am

Ah, OK, I understand your skepticism now.

I'll try to locate the source of the GIF.

Meanwhile, some facts:

Moon albedo ~ 0.12 (the Moon is roughly the color of coal)
Saturn albedo ~ 0.5
Saturn/Earth solar irradiation ratio ~ 0.011

0.12/(0.5*0.011) ~ 22

So the Moon's surface is 22 times brighter than Saturn's (at most, depending on the angle of the sunlight to the Moon's surface), or 4 to 5 stops in photographic parlance. Any camera can manage that.

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Re: Cool astronomy photos

Post by sparks » Fri Jan 25, 2019 5:55 am

I bow to your superior photographic expertise.

And just as soon as you reproduce that shot yourself, you let us all know, Umkay?
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