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djellison
Posted on: Jun 25 2011, 12:52 AM


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Wow - time warp thread. Who would have thought I'd end up at the technical director for that animation :0

Fairly pleased with the end result. And yeah - it has sounds-in-space syndrome, but that part wasn't my doing smile.gif
  Forum: MSL · Post Preview: #174788 · Replies: 135 · Views: 198992

djellison
Posted on: Jun 24 2011, 04:42 PM


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So does driveability analysis based on HiRISE DTM's and other data.
  Forum: MSL · Post Preview: #174774 · Replies: 365 · Views: 228351

djellison
Posted on: Jun 24 2011, 04:02 PM


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Yup - a couple of possible traverse routes from Bell/Anderson.
  Forum: MSL · Post Preview: #174771 · Replies: 365 · Views: 228351

djellison
Posted on: Jun 23 2011, 02:02 PM


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Quite clearly I meant an advantage over the other sites.

No site had that.
  Forum: MSL · Post Preview: #174691 · Replies: 365 · Views: 228351

djellison
Posted on: Jun 23 2011, 01:44 PM


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QUOTE (Juramike @ Jun 23 2011, 06:24 AM) *
. It has the advantage


Clearly not an advantage, or it would have risen above the other sites on scientific merit.
  Forum: MSL · Post Preview: #174688 · Replies: 365 · Views: 228351

djellison
Posted on: Jun 23 2011, 07:17 AM


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QUOTE (ngunn @ Jun 23 2011, 12:09 AM) *
Is that with or without vertical stretch?

Without.


QUOTE
Did this really carry any weight in the selection process?


The conclusion of the 5th landing site meeting was this - ALL the sites were scientifically interesting and all met the engineering requirements. There was no scientific consensus that puts one above the other. So - did aesthetics play into it? They were certainly mentioned at the landing site meeting - and all other things being equal, I don't know why they shouldn't. If you have four safe, interesting landing sites that the science community can't choose between, then why not go to the most spectacular one?

One good side-effect of Gale - it's a very very low landing site. This could offer lots of spare time margin for EDL.
  Forum: MSL · Post Preview: #174681 · Replies: 365 · Views: 228351

djellison
Posted on: Jun 23 2011, 06:10 AM


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A longer animation involving more data from HRSC/CTX/HiRISE - http://www.youtube.com/watch?v=rvXHu-U02UE
  Forum: MSL · Post Preview: #174678 · Replies: 365 · Views: 228351

djellison
Posted on: Jun 23 2011, 05:29 AM


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Totally different. A central peak that exposes 5km of layered rock, for starters. A delta in the landing ellipse.

Ryan et.al. have by far the best analysis and study of the place.

http://martianchronicles.wordpress.com/201...aper-published/

  Forum: MSL · Post Preview: #174674 · Replies: 365 · Views: 228351

djellison
Posted on: Jun 22 2011, 08:05 PM


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MAHLI will generate an single extended DOF image and a height map, on the back-electronics for the camera, before transmitting those to the ground. It need a focusing mechanism, but it doesn't need a month to download it smile.gif
  Forum: Image Processing Techniques · Post Preview: #174657 · Replies: 3 · Views: 5575

djellison
Posted on: Jun 22 2011, 03:29 PM


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A change in stance from 'it's good enough' to 'just how good is it?' - and with Spirit, TIRS/DIMES doing its thing, we probably benefited from that.
  Forum: MSL · Post Preview: #174646 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 22 2011, 02:04 PM


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Exactly why? Don't know.

A quick google finds this:

https://imageserv5.team-logic.com/mediaLibr...Exploration.pdf

Mentions Dec 2003 as the final test.

"Full system inflation testing was completed
successfully in December 2003. Desired pressure
profiles were achieved and deployment occurred
with no damage to the airbag assembly."

  Forum: MSL · Post Preview: #174640 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 22 2011, 01:44 PM


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Rule 1.3 people - you're tip-toeing along the edge of it perilously.
  Forum: Telescopic Observations · Post Preview: #174639 · Replies: 1264 · Views: 731478

djellison
Posted on: Jun 22 2011, 01:39 PM


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Just to give you one analogy - engineering model MER airbags were still being tested AFTER the launch of Spirit and Opportunity.
  Forum: MSL · Post Preview: #174636 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 21 2011, 06:20 PM


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QUOTE (Bobby @ Jun 21 2011, 07:47 AM) *
Us Americans are still old school and use that still.


Then you can figure it out for yourself. I'm sure you know how.

Why not figure it out, add them, then share it with the rest of the forum - rather than asking someone who already spends HUGE amounts of time giving you amazing resources for nothing, to do even more work.

  Forum: Chit Chat · Post Preview: #174593 · Replies: 123 · Views: 155291

djellison
Posted on: Jun 21 2011, 05:55 AM


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QUOTE (Astro0 @ Jun 20 2011, 09:48 PM) *
Does anyone know if the light shining at the bottom of the frame is Saturn's limb/terminator, a moon or some other feature? Is the planet part of the background?


Eyes on the Solar System has predicted trajectory (but not pointing) for this - and looking at the geometry, I think it's the limb of Saturn, The 'darkness' you have, is the night side of Saturn. C/A was well after that and the dark side of Saturn was no longer in the FOV.
  Forum: Cassini's ongoing mission and raw images · Post Preview: #174572 · Replies: 77 · Views: 117751

djellison
Posted on: Jun 18 2011, 05:34 AM


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For security reasons - the exact how/when/where of rover movements from JPL to KSC are not made public
  Forum: MSL · Post Preview: #174442 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 17 2011, 08:10 AM


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A few pics from the final Curiosity Cam Ustream chat event - http://flic.kr/s/aHsjuZ6Pqa
  Forum: MSL · Post Preview: #174397 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 17 2011, 01:14 AM


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This end up for the rocket, and this end up for Mars...and opposite smile.gif
  Forum: MSL · Post Preview: #174390 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 16 2011, 04:32 AM


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Ones I can name off the top of my head in rough chronological order...

Eagle
Fram
Endurance
Vostok (highly erroded)
James Caird
Viking
Voyager
Erebus
Beagle
Victoria
Concepcion
Santa Maria

And the recent swath of early manned spaceflight ones.
  Forum: Opportunity · Post Preview: #174353 · Replies: 1559 · Views: 801287

djellison
Posted on: Jun 16 2011, 04:06 AM


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RTG. Laser. Power tools.

Only option "Whatever the hell it wants to be called"
  Forum: MSL · Post Preview: #174351 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 15 2011, 09:55 PM


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Or George.
  Forum: MSL · Post Preview: #174341 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 15 2011, 03:42 PM


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The two are very clearly totally different spacecraft. One is a small airbag lander for a netlander style mission in the 150-200kg range that would last two years on the surface. The other is a Phoenix sized pulse-throttled-hydrazine engined EDL test soft lander in the 600kg range that will last one week on the surface.
  Forum: ExoMars Program · Post Preview: #174325 · Replies: 589 · Views: 581352

djellison
Posted on: Jun 15 2011, 02:01 PM


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QUOTE (spdf @ Jun 15 2011, 04:36 AM) *
3-6 landers at a mass of 170 kg.


Like I said - the 600kg test lander actually kills off an EDL test for a vehicle of this size.

And that's not really a document about Mars-Next (infact, that phrase doesn't appear in the entire 100 pages of it) - it's the technology roadmap for robotic exploration of the entire agency. Yes, it talks about a presumed networked lander - it simply cites 2011 funding for 4 different technological requirements - Aerogel, UHF/Xband comms, an orbiter re-entry breakup analysis tool and small lander airbags.. total funding is 3.6M Euros. It cites other tech research projects that would stretch into 2014 as a precursor to any possible network lander projects. It doesn't attest as to the likelihood of such a mission happening.
  Forum: ExoMars Program · Post Preview: #174320 · Replies: 589 · Views: 581352

djellison
Posted on: Jun 15 2011, 06:56 AM


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They're actually etched into the metal components of the rover in some cases. They're not going anywhere.

I'd be carefull calling it 'Curie' though. Marie Curie is the flight-spare of the '97 Sojourner rover.
  Forum: MSL · Post Preview: #174316 · Replies: 414 · Views: 203792

djellison
Posted on: Jun 15 2011, 06:03 AM


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I spoke to the ATLO lead ( Peter Illsley ) just outside SAF today 'You get to say goodbye soon!' 'No, I get to go to Florida'

Much of the team will travel east with the hardware.
  Forum: MSL · Post Preview: #174314 · Replies: 414 · Views: 203792

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