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Artemis 2 Going back to the moon.


Dark Traveller said:
Love the info about the Earth photo, all the info contained in the metadata…

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“Now let's get serious about the photo.

This is a tweet for those interested in photography, astrophotography, and anyone who wants to know. Why is this photo incredible? Some conspiracy theorist, acting all suspicious, asked why this photo taken by the Artemis II commander looked more washed out than the photo taken by the Apollo 17 crew in 1972.

Well. Here's the exciting part. This photograph would have been impossible to take with an analog camera; and not just any digital camera can capture it. The original file for this photo is available for download on NASA's website. In the file's properties, you can see what camera it was taken with and the exposure settings that were used. Even the camera's serial number.

This, first and foremost, guarantees that the photo we're seeing wasn't created digitally or with AI, but captured by a real camera by a human. I know that's not enough argument for the conspiracy theorists, but oh well. That's the Earth right there. Now for the really interesting part. Why does it look more washed out than the one from '72?

Because it turns out that on the side of the Earth we see in that photo, it's nighttime; if you zoom in, you can see the glow of nighttime lighting. But how, if it's nighttime, can it look like daytime?

Because the photo was taken with a super high ISO of 51200! ISO is the sensor's sensitivity to light. With most digital cameras, at ISOs over 6400, the noise is so much that the photo looks practically unreadable. But the camera that Commander Reid Wiseman has is a NIKON D5, which isn't a very new camera; it was released 10 years ago.

But its sensor is renowned for guaranteeing decent image quality at high ISOs. And that, for those who always ask how to take a good sky photo, is fundamental.

Why? Well, to be able to photograph the stars without having to lower the exposure speed too much. Because if you lower the exposure too much to let in more light, it captures the movement of the stars and the Earth's rotation, when you're on Earth.

So a high ISO like that made it possible for Wiseman to shoot at a speed of 1/4 of a second. Which is low, but not that low. It's, let's say, the limit for astrophotography. That's why this photo has noise, because it's still a super high ISO anyway.”
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I never really thought about it until I read that, but of course it is night. You can see the sun light just showing behind the earth, so the side facing the camera must be dark.

Again though it is a shame that discussion about this has to mention and put up a bit of a fight against the conspiracy theorists. You would not expect RLB and KLD to be mentioning Birtley over 60s 5-a-side Thursday night club in their pre season plans,because they are insignificant. But the internet has given this tiny minority an amplified voice.
admwil said:
All world leaders upon inauguration should be sent up to look back at the pale blue dot
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And some should not be brought back.
 
Dadsarmy73 said:
Just watching this on nasa TV thinking this is genuinely the best of humanity and what can be achieved, while at the same time we are witnessing the very worst in humanity in Trump and Iran
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I'm a massive space enthusiast but think the whole Artemis/Orion project is driven by American greed, not the greater good of humanity. It's a race to stick flags in the moon and claim the deuterium.
 
smoker said:
I'm a massive space enthusiast but think the whole Artemis/Orion project is driven by American greed, not the greater good of humanity. It's a race to stick flags in the moon and claim the deuterium.
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Oh absolutely.

It must have been quite the change in mindset to go from seeing a solar eclipse behind the moon whilst seeing Earth shining back at them to speaking to that absolute clown Trump shortly after. What a comedown.
 
DaveH said:
Again though it is a shame that discussion about this has to mention and put up a bit of a fight against the conspiracy theorists.
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Who on this thread are conspiracy theorists? I'd like to read their comments to see what they said.
 
smoker said:
I'm a massive space enthusiast but think the whole Artemis/Orion project is driven by American greed, not the greater good of humanity. It's a race to stick flags in the moon and claim the deuterium.
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i think there's likely a bit of both in that, same with apollo - even the whole space program. humans are fundementally selfish.







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Cosmo said:
Who on this thread are conspiracy theorists? I'd like to read their comments to see what they said.
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i must defer to my learned colleague on that matter...


Cockney Mackem said:
Seems like a deliberate attempt to waste people's time, asking them to explain to a dribbling shitgibbon what everyone who isn't a dribbling shitgibbon already knows
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32nd of December said:
I see whats going on here, this is no coincidence we've decided to go into orbit again.

The Petrova line is a faint, infrared arc stretching from the Sun to Venus, discovered by Russian scientist Dr. Irina Petrova. It represents the path of trillions of "Astrophage"

Astrophage is a spacefaring interstellar microorganism that feeds on stellar energy, acting as a solar parasite. Nicknamed "star-eater" (derived from Latin), it reduces a star’s luminosity by inhabiting its surface, threatening to cause a global ice age on dependent
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It's ok, Ken Barlow and The Rock will save us.
 
Red said:
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does that have a source? presume that's not from integrity but something else, or a few days ago? thought they were only beginning to transmit the data now once they were into their sleep zone and bandwidth could be free'd up?
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Slightly gutted they've tagged dipshit donny in this, I guess this is the photo they've been waiting for...

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errant said:
does that have a source? presume that's not from integrity but something else, or a few days ago? thought they were only beginning to transmit the data now once they were into their sleep zone and bandwidth could be free'd up?
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Slightly gutted they've tagged dipshit donny in this, I guess this is the photo they've been waiting for...

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That's just.. awesome.
 
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