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Perseverance Rover lands on Mars [video]

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Re: Perseverance Rover lands on Mars [video]

#41

Post by someperson »

comfydragon wrote: post #33
ryankrage77 wrote: post #18

Earlier quoted context omitted.

Probably around 20-30 minutes after it's landed. Perseverance needs to lock onto sattelites that are part of the Deep Space Network for the bandwidth required to send media. It also takes 22 minutes to send a command and get a response back.

We actually got a picture like 3 minutes after landing. (Okay, a picture from shortly after landing.)

Probably routed through the Mars Reconnaissance Orbiter, Maven and possibly Europe's Mars Express satellites, rather than a direct connection to the Deep Space Network

https://en.wikipedia.org/wiki/Mars_Reconnaissance_Orbiter

https://en.wikipedia.org/wiki/MAVEN

Re: Perseverance Rover lands on Mars [video]

#42

Post by shadowgovt »

comfydragon wrote: post #33
ryankrage77 wrote: post #18

Earlier quoted context omitted.

Probably around 20-30 minutes after it's landed. Perseverance needs to lock onto sattelites that are part of the Deep Space Network for the bandwidth required to send media. It also takes 22 minutes to send a command and get a response back.

We actually got a picture like 3 minutes after landing. (Okay, a picture from shortly after landing.)

If I understood the livestream correctly, it's because they were able to (maintain|quickly establish) lock to the MRO after touch-down and zip a couple of images up through the "bent-pipe" UHF-to-high-power relay into the Deep Space Network.

Re: Perseverance Rover lands on Mars [video]

#43

Post by ceejayoz »

ryankrage77 wrote: post #18
drewblaisdell wrote: post #15

When can we expect any imagery from Perseverance? The Curiosity photos were incredible.

Probably around 20-30 minutes after it's landed. Perseverance needs to lock onto sattelites that are part of the Deep Space Network for the bandwidth required to send media. It also takes 22 minutes to send a command and get a response back.

It was already communicating with DSN the whole way down, via one of the orbiters, and "send a pic" was apparently a pre-programmed command not requiring Earth initiation.

Re: Perseverance Rover lands on Mars [video]

#46

Post by tnorthcutt »

WJW wrote: post #39
shadowgovt wrote: post #36

Earlier quoted context omitted.

Upright and in one piece. :) No, but seriously: amazing engineering and amazing work. So great to see the images streaming in already.

The skycrane system is just SO COOL. It's also one of those things that is super easy to explain but incredibly difficult to actually construct, let alone have it work well after flying all the way to Mars.

They're not that hard to make and fly... in Kerbal Space Program ;)

(I'm totally kidding; what they've accomplished is incredible!)

Re: Perseverance Rover lands on Mars [video]

#48

Post by jasonjayr »

drewblaisdell wrote: post #15

When can we expect any imagery from Perseverance? The Curiosity photos were incredible.

First few low-res pictures posted here:

https://twitter.com/NASAPersevere

I'd bet they post the first high-res pictures once they arrive. The link from Mars to earth is sending a lot of information about what just happened, so understandably bandwidth is pretty saturated

Re: Perseverance Rover lands on Mars [video]

#50

Post by user3939382 »

raphaelj wrote: post #47

NASA's ability of succeeding at landing things successfully on the first try on foreign bodies since 1969 is mind-blowing. Meanwhile, SpaceX takes half a dozen tries before managing to do the same on a fully known environment on Earth.

Yeah, c’mon Elon. It’s not rocket science!
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