Artemis (NASA moon mission)

[Checkmite]

Nice image taken as Orion approached the halfway point of its distant-retrograde orbit

[Mike!]

Originally Posted by Checkmite

Nice image taken as Orion approached the halfway point of its distant-retrograde orbit

Very cool!

[jadebox]

Best selfie ever!

[arthwollipot]

Wow.

[mgidm86]

That is spectacular.

My Dad says he held me up to the TV when I was a toddler so I could say I watched the first man on the moon. I don't remember it but I bet the picture was just a bit lower in quality.

I needed something cool to see today, thanks NASA.

[Gord_in_Toronto]

Originally Posted by mgidm86

That is spectacular.

My Dad says he held me up to the TV when I was a toddler so I could say I watched the first man on the moon. I don't remember it but I bet the picture was just a bit lower in quality.

I needed something cool to see today, thanks NASA.

It was awful. My then girlfriend and now wife watched it on a big screen (must have been at least 50 inches) at Toronto City Hall Square along with a few hundred other people. We were close enough to see a fuzzy grey blob step foot on a fuzzy grey ground. I guess people a few rows back could at least say they were there.

Here it is:

YouTube Video This video is not hosted by the ISF. The ISF can not be held responsible for the suitability or legality of this material. By clicking the link below you agree to view content from an external website.

I AGREE

[rjh01]

Originally Posted by Gord_in_Toronto

It was awful. My then girlfriend and now wife watched it on a big screen (must have been at least 50 inches) at Toronto City Hall Square along with a few hundred other people. We were close enough to see a fuzzy grey blob step foot on a fuzzy grey ground. I guess people a few rows back could at least say they were there.

Here it is:

YouTube Video This video is not hosted by the ISF. The ISF can not be held responsible for the suitability or legality of this material. By clicking the link below you agree to view content from an external website.

I AGREE

It was
- shot through a window of Eagle,
- transmitted to Earth
- displayed on a TV with a nonstandard number of lines
- recorded on a standard TV camera
- transmitted around the world
- broadcast by all the TV stations

So yes, the quality was poor. To add insult to injury the original recording has been lost. After all the hardware it was recorded on was valuable and it was considered what was recorded had no value so it was reused.

[Darat]

Originally Posted by mgidm86

That is spectacular.



My Dad says he held me up to the TV when I was a toddler so I could say I watched the first man on the moon. I don't remember it but I bet the picture was just a bit lower in quality.



I needed something cool to see today, thanks NASA.

My mother did the same!

[pzkpfw]

Originally Posted by rjh01

It was
- shot through a window of Eagle,
...

The initial ladder climb and first step was shot from a camera mounted on a fold out flap of the descent stage.

[Trebuchet]

Originally Posted by mgidm86

That is spectacular.

My Dad says he held me up to the TV when I was a toddler so I could say I watched the first man on the moon. I don't remember it but I bet the picture was just a bit lower in quality.

I needed something cool to see today, thanks NASA.

In addition to being spectacular, it provides a good example of how dark the moon actually is.

[jadebox]

The first live image from Aretamis 1 after it swung around the moon on its way home made me gasp. It looks like a scene from 2001.

[Puppycow]

It's now heading back toward earth again.

[arthwollipot]

On track for a 11 December splashdown.

[Foster Zygote]

Some spectacular video of the launch with excellent sound. Headphones definitely recommend, although it sounds great through my living room sound system, too. The shots from the launch complex are especially impressive, particularly when the SRBs ignite.

YouTube Video This video is not hosted by the ISF. The ISF can not be held responsible for the suitability or legality of this material. By clicking the link below you agree to view content from an external website.

I AGREE

[3point14]

Originally Posted by Foster Zygote

Some spectacular video of the launch with excellent sound. Headphones definitely recommend, although it sounds great through my living room sound system, too. The shots from the launch complex are especially impressive, particularly when the SRBs ignite.

YouTube Video This video is not hosted by the ISF. The ISF can not be held responsible for the suitability or legality of this material. By clicking the link below you agree to view content from an external website.

I AGREE

That thing fairly leaps off the launchpad. I'm used to a much more sedate ascent while watching big rockets.

[crescent]

Originally Posted by Foster Zygote

Some spectacular video of the launch with excellent sound. Headphones definitely recommend, although it sounds great through my living room sound system, too. The shots from the launch complex are especially impressive, particularly when the SRBs ignite.

YouTube Video This video is not hosted by the ISF. The ISF can not be held responsible for the suitability or legality of this material. By clicking the link below you agree to view content from an external website.

I AGREE

I like that the audio was not adjusted to match the sound of the launch with the video - if that makes sense. I mean that they kept it real, so if the sound takes 20 seconds to get from the launchpad to the viewer, then that's what we see. We see the rocket light up and start moving but don't hear it until 20 seconds or so later (from the first camera position in the video).

It's surprising (and disappointing) how often that sort of thing gets edited out of videos. I watch a lot of video coming out of Ukraine, and they often sync up the sounds of bombs with the appearance of bombs even it you can naturally assume that the sound actually took some time to get to the camera. There's no need to edit the video like that, but they do it anyway.

Like this one, for example: Underwater nuke test. It's obvious that the camera is some miles from the blast but the image and sound of the blast have been synced to remove the speed of sound. That just seems unnecessary.

[Trebuchet]

Originally Posted by 3point14

That thing fairly leaps off the launchpad. I'm used to a much more sedate ascent while watching big rockets.

Solid rocket motors generally provide higher acceleration.

[Mike!]

Originally Posted by Trebuchet

Solid rocket motors generally provide higher acceleration.

Advantage: Lots of thrust, NOW!
Disadvantage: No 'off' switch, whatsoever. It's gonna run as long as it's meant to run, and not a moment less.

[jadebox]

Originally Posted by Mike!

Disadvantage: No 'off' switch, whatsoever. It's gonna run as long as it's meant to run, and not a moment less.

...under normal circumstances.

Pedant Alert!

But there is a dramatic off-switch. There are explosives along the body of the SRBs that, when activated, split open the SRB causing the pressure in the combustion chamber to quickly drop and the solid propellant to stop burning.

Of course, this is part of the Flight Termination System used in an emergency. It was used after the Challenger accident. In the videos of that tragic accident, you can see the SRBs start to fly off, still under power, until the Range Safety Officer triggers the FTS and the SRBs break apart.

Even more pedantic ...

Solid rocket motors are designed to produce specific thrust curves mostly by varying the geometry of the core. Many are designed to produce a regressive burn (higher thrust at first) because you often need that.

The hobby rockets like I fly usually require air flowing past the fins to be stable so they are designed with high initial thrust so they are going fast enough when leaving the launch rod or rail.

But many of our hobby motors have progressive burns mainly because they are easier to produce, but also for specific situations, for example to reduce drag and stress at lower altitudes where the air is thicker.

[Jimbo07]

I've beaked about the production quality of the launch broadcast. You might think I can't be impressed by anything low-res. Of course, that's not the case:

Artemis I Earth-moon transit

Wow!

I've never seen that before, and neither have you (not counting if you viewed it earlier today )! We know from physics and common navigation (even here on Earth) that at some point, transits have to happen... we just don't often get to see this particular one!

[3point14]

Originally Posted by Jimbo07

I've beaked about the production quality of the launch broadcast. You might think I can't be impressed by anything low-res. Of course, that's not the case:

Artemis I Earth-moon transit

Wow!

I've never seen that before, and neither have you (not counting if you viewed it earlier today )! We know from physics and common navigation (even here on Earth) that at some point, transits have to happen... we just don't often get to see this particular one!

Thank you for this. Somehow it's rather moving. I suspect the music they've chosen helps.

The moon somehow doesn't look like the moon, because I (and everyone else on the planet) am not used to seeing that side of it.

[Puppycow]

Originally Posted by Jimbo07

I've beaked about the production quality of the launch broadcast. You might think I can't be impressed by anything low-res. Of course, that's not the case:

Artemis I Earth-moon transit

I wonder why it seems to be pulsating or throbbing? (growing and shrinking in size) I get that it's a time lapse. Did the zoom change as it was happening?

It's very cool nevertheless, but would be even cooler if it were smooth.

Reminds me of something that was filmed in a desert or hot summer day through hot rising air, but I know that can't be it because it's in the vacuum of space.

[jadebox]

Originally Posted by Puppycow

I wonder why it seems to be pulsating or throbbing? (growing and shrinking in size) I get that it's a time lapse. Did the zoom change as it was happening?

It's very cool nevertheless, but would be even cooler if it were smooth.

Reminds me of something that was filmed in a desert or hot summer day through hot rising air, but I know that can't be it because it's in the vacuum of space.

My guess is that it is because the camera is mounted on the end of a solar panel wing which moves and flexes.

Someone could process the video to remove the "throbbing." It isn't a lot of frames so it might be something someone with a bit of free time could do manually frame -by-frame.

Not me!

[Puppycow]

YouTube Video This video is not hosted by the ISF. The ISF can not be held responsible for the suitability or legality of this material. By clicking the link below you agree to view content from an external website.

I AGREE

Frasier Cain's latest video has some nice pictures from Artemis

[Darat]

Originally Posted by pzkpfw

The initial ladder climb and first step was shot from a camera mounted on a fold out flap of the descent stage.

Don't be silly, that was a camera man!

[mgidm86]

I don't think anything makes me feel more insignificant and vulnerable as viewing Earth from space.

[Mike!]

Splashdown!

https://www.cnn.com/2022/12/11/world...scn/index.html

[miatasport99]

The NASA stream just ended right as the mission was handed off to the "recovery team." The team that's actually going to pull it out of the water. Anyone know if there's a way to watch that live?

[jadebox]

Originally Posted by miatasport99

The NASA stream just ended right as the mission was handed off to the "recovery team." The team that's actually going to pull it out of the water. Anyone know if there's a way to watch that live?

https://youtu.be/Si2iks2-T34

[miatasport99]

Thank you!

[jadebox]

BTW, it was explained earlier that they are leaving the capsule in the water longer than they will in later missions so they can perform some tests. They are doing things like determining how well and low long the cooling system would keep the crew comfortable.

They also said that NASA hasn't decided yet if the astronauts will remain in the capsule until it is lifted onto the recovery ship or if they will exit while it is still in the water. The astronaut in that discussion made it clear that her preference would be to get out as soon as possible. Watching it bounce around in the relatively calm waters right now, I see her point.

[miatasport99]

Originally Posted by jadebox

BTW, it was explained earlier that they are leaving the capsule in the water longer than they will in later missions so they can perform some tests. They are doing things like determining how well and low long the cooling system would keep the crew comfortable.

They also said that NASA hasn't decided yet if the astronauts will remain in the capsule until it is lifted onto the recovery ship or if they will exit while it is still in the water. The astronaut in that discussion made it clear that her preference would be to get out as soon as possible. Watching it bounce around in the relatively calm waters right now, I see her point.

I heard the part about the extended recovery time here for testing/documentation, but not that the crew extraction timeline is still in flux for future missions. Yeah, I gotta imagine that after that ride, I'd want out right away

[Mike!]

Originally Posted by miatasport99

I heard the part about the extended recovery time here for testing/documentation, but not that the crew extraction timeline is still in flux for future missions. Yeah, I gotta imagine that after that ride, I'd want out right away

"I love you guys, and it's been fun, but I need some 'me' time, if you don't mind."

[miatasport99]

Well, the capsule is finally out of the water and onto a ship. I thought it would be picked up by a helicopter, not pulled into the hull of a ship. Thanks jadebox for the KSC link.

[jadebox]

Originally Posted by miatasport99

Well, the capsule is finally out of the water and onto a ship. I thought it would be picked up by a helicopter, not pulled into the hull of a ship. Thanks jadebox for the KSC link.

Wasn't that exciting? I should have made popcorn! :-)

Remembering Apollo, I was expecting them to use a helicopter also.

When I was a kid, we lived near Eglin AFB in Florida. When we visited the base swimming area, we could see a barge with an Apollo capsule on it docked near by. We even saw it being towed out into the ocean once or twice. It was used for training the crews that recovered the capsules. The boilerplate capsule is now on display near the building where I later worked on-base.

[miatasport99]

Originally Posted by jadebox

Wasn't that exciting? I should have made popcorn! :-)

Remembering Apollo, I was expecting them to use a helicopter also.

When I was a kid, we lived near Eglin AFB in Florida. When we visited the base swimming area, we could see a barge with an Apollo capsule on it docked near by. We even saw it being towed out into the ocean once or twice. It was used for training the crews that recovered the capsules. The boilerplate capsule is now on display near the building where I later worked on-base.

That's pretty cool! I live in Lancaster, Ca. We used to have a capsule on display outdoors at a local "Apollo Park". It got taken away a while ago to a museum.

This article talks about it: https://www.presstelegram.com/2011/0...akes-re-entry/