Mars2020 landing cameras |
Mars2020 landing cameras |
Jun 16 2016, 06:43 PM
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#16
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
...clearly we gotta be more careful what we post in jest lest it be taken seriously...
You just don't buy a couple of $300 cams at an electronics store & slap them on to a top-of-the-line interplanetary mission with planned significant longevity, obviously. I can see GoPro getting a contract to build custom cams to reduce mass & comply with both vehicle interface requirements & PPPs. No idea if that would be favorable in terms of cost and performance vs. building them in-house or procuring them from flight-proven vendors, but it really would have to be in order to offset the increased risk level. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jun 16 2016, 08:48 PM
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#17
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Junior Member Group: Members Posts: 22 Joined: 7-January 13 Member No.: 6834 |
One of the main issues is to decouple the GoPros from the spacecraft onboard software to avoid any pollution in case of firmware crash. The validation of GoPro's firmware is very far from those of space software. If the interface is still USB (not native at all in space hardware), one can imagine there will be a dedicated hardware to ensure the proper interface and soft safety. Not a small business.
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Jun 16 2016, 09:15 PM
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#18
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
No, not at all. I strongly suspect that this idea will be off the table in short order for those reasons alone.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jun 16 2016, 09:25 PM
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#19
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Junior Member Group: Members Posts: 22 Joined: 7-January 13 Member No.: 6834 |
Yes maybe. But it went through the clearance procedures in JPL up to a publication and presentation at a conference. Not a big deal, but... still an official publication toward the scientific/engineering community.
We may suspect those details have been discussed and considered not a show stopper so far. I cannot imagine JPL presenting fairytales in a project that will launch 4 years from now. |
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Jun 22 2016, 11:16 PM
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#20
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
The cameras on the descent stage will obviously need to send and store their data real-time to the rover, obviously, for transmission back to Earth after landing.
Is there any advantage to making this a wireless connection, which can then also provide video from rover release to the end of the fly-away maneuver? That could provide an initial low-level flyover of a section of the local terrain where the rover won't likely be allowed to go (contamination issues), and give more data about the entire site. Sort of a first survey along the lines of the proposed hopper-copter's aerial surveys. This could even use the same radio data channel that will later be used to connect the rover to the hopper-copter. I'm just trying to think of ways to get the maximum value out of these cameras. Besides the extreme cool factor, of course... -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Jul 16 2016, 12:37 AM
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#21
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
A microphone, at last! http://www.planetary.org/blogs/bruce-betts...es-on-mars.html
Mounted on the camera, for scientific purposes (to listen to the cracking noise from the laser), though I'm glad whatever the reason! |
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Jul 16 2016, 09:18 AM
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#22
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
I'd expect to hear some occasional cracking of rocks near sunrise and sunset when temperature is changing rapidly. But maybe InSight is better equipped for this purpose.
Another conceivable application could be a sonar. By measuring signal travel times after a ChemCam shot you could reconstruct some 3d information about the environment; this would of course work better with more than one microphone. But zapping several targets might work, too. And you could learn something about the sound damping properties of the ground, which is related to roughness and hardness. Combine this acoustic surface property map with visual, and maybe with thermal maps, and you get an enriched basis to select targets of interest for contact science. |
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Jul 16 2016, 10:29 PM
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#23
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Gotta remember how exceedingly thin Mars' atmosphere is, though. I suspect that the only truly noisy part will be EDL, and even that's gonna sound pretty subdued compared to an equivalent event on Earth.
We'll probably hear sounds from the rover mechanisms via structural conduction, and perhaps there will be a windstorm or a direct hit by a dust devil that might produce a faint whistle or two, but short of that I suspect that Mars is very quiet indeed. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jul 17 2016, 10:42 AM
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#24
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Senior Member Group: Members Posts: 2922 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
Will be surprised if Mars will not surprise...
-------------------- |
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Jul 17 2016, 11:14 PM
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#25
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Member Group: Members Posts: 715 Joined: 22-April 05 Member No.: 351 |
The cameras on the descent stage will obviously need to send and store their data real-time to the rover, obviously, for transmission back to Earth after landing. Maybe they will just store the data on the microSD card and download it at leisure via a usb cable. -------------------- |
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Jul 17 2016, 11:22 PM
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#26
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Senior Member Group: Members Posts: 1669 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Would a LIDAR help with 3D mapping of the local terrain to help with stereo imaging and constructing 3D models?
-------------------- Steve [ my home page and planetary maps page ]
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Jul 18 2016, 12:01 AM
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#27
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
Maybe they will just store the data on the microSD card and download it at leisure via a usb cable. After the descent stage flies away? You'd need a rather long cable. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 19 2016, 03:23 PM
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#28
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
Maybe they will just store the data on the microSD card and download it at leisure via a usb cable. From Earth to Mars? That would require a seriously long USB cable, not to mention the need to use serious bug and virus detection before any transfer can be allowed. Another risk is that if we have such a direct connection to Mars, it would not take long before we get the first spams with messages like: I am the widow of the former president of Cryse. Help me transfer my 3 billion from Hellas to Syrtis Major, please send 10^7 Maritan rollads to my account to faciliate the transfer. |
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Jul 20 2016, 01:43 PM
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#29
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Member Group: Members Posts: 715 Joined: 22-April 05 Member No.: 351 |
From Earth to Mars? That would require a seriously long USB cable, not to mention the need to use serious bug and virus detection before any transfer can be allowed. Another risk is that if we have such a direct connection to Mars, it would not take long before we get the first spams with messages like: I am the widow of the former president of Cryse. Help me transfer my 3 billion from Hellas to Syrtis Major, please send 10^7 Maritan rollads to my account to faciliate the transfer. I had been thinking of just a few inches to a bus in the rover, but a cable stretching all the way back to Earth would eliminate the need for those expensive relay orbiters. -------------------- |
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Aug 28 2016, 11:38 AM
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#30
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Senior Member Group: Members Posts: 2922 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
There is the following information on AW&ST August 15-28 2016 issue regarding the microphone:
"SuperCam also will have a microphone, both to gather information about the targets being hit with the laser light and to collect more data on the Martian weather. Wind sounds will be correlated with wind-speed measurements collected by the rover's weather instruments, while the volume of sound generated by laser's "zap" is directly proportional to the hardness of the rocks". The quote is from Roger Wiens of Los Alamos, the PI of both ChemCam and SuperCam This is much more than I was anticipating regarding sound conduction by Martian air. Must be very sensitive to collect such information. Most of us were thinking we'll listen only at rover's noises I'd said. -------------------- |
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