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Artemis II crew take “spectacular” image of Earth

bbc.com

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Re: Artemis II crew take “spectacular” image of Earth

#191

Post by adamm255 »

ourmandave wrote: post #162
porphyra wrote: post #120

Earlier quoted context omitted.

I'd have probably shot it wide open at f/2.8 rather than cranking the ISO up to 51200. Incredibly impressed at the steady hands for a sharp image at 1/4 s shutter speed though! Maybe they just let the camera float in space with the mirror up, triggering it remotely.

You can get a D5 on amazon.com. It would be amazing if one of the astronauts did a review explaining how it performs in space.

Oh man. "Rolled with the D5 on my recent trip around the moon, decent performance, very light and easy to hold in zero gravity".

Re: Artemis II crew take “spectacular” image of Earth

#192

Post by nntwozz »

For anyone not understanding the high ISO please have a look at this recent video by minutephysics.

Do you understand ISO?

It took me 21 years...

https://youtu.be/ZWSvHBG7X0w

This video explains how ISO is very different to what most people imagine, and how you can use this knowledge to take less noisy photos.

Re: Artemis II crew take “spectacular” image of Earth

#193

Post by tacostakohashi »

There's something a bit weird having these digital photos and crisp digital audio and video of the astronauts, and seeing pictures of mission control with flat screens after having grown up on grainy analogue video, crackly audio with lots of beeps, and mission control being choc full of CRTs being watch by men in short sleeve shirts with black ties and cigarettes.

Re: Artemis II crew take “spectacular” image of Earth

#194

Post by dotancohen »

narmiouh wrote: post #145
porphyra wrote: post #120

Earlier quoted context omitted.

I'd have probably shot it wide open at f/2.8 rather than cranking the ISO up to 51200. Incredibly impressed at the steady hands for a sharp image at 1/4 s shutter speed though! Maybe they just let the camera float in space with the mirror up, triggering it remotely.

I would imagine since they are not circling the earth, that there will be pull of gravity and the camera would start to move relative to the spacecraft. But may not fast enough for a short exposure

The gravity of the Earth (and moon, and everything else) is uniform (i.e. no gradient) on the scale of things the size of that capsule at the distance that capsule is from them, on the order of time of the exposure of that photograph. So the gravity (from any source) will pull on the spacecraft and on the camera in the same fashion.

To fully answer the question, the moon's gravitational gradient does pull on the Earth, the ocean closest to the moon, and the ocean furthest from the moon differently. But those are objects separated by thousands of kilometers, having hours of gravitational influence acting upon them.

Re: Artemis II crew take “spectacular” image of Earth

#196

Post by pndy »

sgt wrote: post #59
damnitbuilds wrote: post #3

Anyone find the full res version of this ? Nasa images page is useless. Government work.

I don't understand why media, such as BBC, keep uploading heavily compressed versions of photos that could be beautiful. The original has grain, sure but that's not a problem. The BBC version is horrific. Are they trying to save on bandwidth in 2026?

If the content loads fast, more views are given and more data is collected.

My uBo caught 6 elements, Privacy Possum got referer headers blocked from 28 sources

Re: Artemis II crew take “spectacular” image of Earth

#198

Post by [deleted] »

layer8 wrote: post #83
hannesfur wrote: post #73

Looking at the EXIF (with exiftool) for the image uploaded by NASA ( https://www.nasa.gov/wp-content/uploads/2026/04/art002e00019... ), apparently this was taken by a Nikon D5 with an AF-S Zoom-Nikkor 14-24mm f/2.8G ED and developed with Lightroom. It also seems like very little was done in Lightroom. Amazing... I dumped the whole EXIF here: https://gist.github.com/umgefahren/a6f555e6588a98adb74eed79d...

Before Lightroom it might have looked closer to this: https://images-assets.nasa.gov/image/art002e000193/art002e00...

[deleted]

Re: Artemis II crew take “spectacular” image of Earth

#199

Post by syncsynchalt »

thaumasiotes wrote: post #165
Sharlin wrote: post #11

I was confused when I first saw this photo, as I don't think I've ever before seen a nightside, moonlit Earth, exposed so that it looks like the dayside at a first glance. I wonder how many casual viewers actually realize it's the night side. A nice demonstration of how moonlight is pretty much exactly like sunlight, just much much dimmer. In particular it has the same color, even though moonlight is often thought of…

> even though moonlight is often thought of as bluish and sunlight as yellowish! Is that... true? Sunlight is seen as yellow, of course, but the moon is usually thought of as white.

Sunlight is yellowish in atmosphere since some blue's been scattered by the atmosphere[1], but it's white in space.

[1] https://en.wikipedia.org/wiki/Rayleigh_scattering

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