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djellison
Posted on: Sep 23 2009, 07:44 PM


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http://downforeveryoneorjustme.com/http://ntrs.nasa.gov/

Yup - down.
  Forum: Chit Chat · Post Preview: #146623 · Replies: 8 · Views: 9002

djellison
Posted on: Sep 22 2009, 10:02 PM


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MRD = MIPLRAD Radiometrically-corrected RDR calibrated to absolute radiance units, specific to archived datasets only
  Forum: Spirit · Post Preview: #146568 · Replies: 1068 · Views: 609987

djellison
Posted on: Sep 22 2009, 08:13 PM


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FINISHED smile.gif

http://www.dougellison.com/?p=82

Not perfect - but it's about the best I can do.
  Forum: MRO 2005 · Post Preview: #146556 · Replies: 127 · Views: 250686

djellison
Posted on: Sep 22 2009, 05:57 PM


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Open an envelope, crack a mint in half. Same thing.
  Forum: Venus Express · Post Preview: #146549 · Replies: 500 · Views: 1360584

djellison
Posted on: Sep 22 2009, 03:14 PM


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I'm seing differences in colour between pointings. Does the ImageJ PDS reader use the offset and scaling like img2png ?
  Forum: Phoenix · Post Preview: #146535 · Replies: 8 · Views: 32600

djellison
Posted on: Sep 22 2009, 09:18 AM


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Plus the unusual extra that you don't have in the typical corporate situation. The ISIL, maintaining two TB rovers, liasing with other missions for UHF relay etc, science teams (outside that number of people figure)

Just 50 people at $200k a head. Plus $5m DSn. Plus $5m for the 'only in MER land' extras. $20m.

I don't honestly think it could be done cheaper without compromising mission safety or productivity significantly.

One pertinent tweet from Scott last night

QUOTE
I worked "only" 11.5 hours today and now I feel like a slacker. I'm guessing that's not a healthy attitude toward life.


I still think MER at $20M is CHEAP.
  Forum: Exploration Strategy · Post Preview: #146524 · Replies: 37 · Views: 44028

djellison
Posted on: Sep 21 2009, 10:13 PM


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Doing an updated 2009 version of my Columbia Hills DEM. Bit of a bug in the first render, but should be finished tomorrow night.

Just got a new Core i7 860 CPU. My Q6600 has been retired to status of render node. New rig does these frames in about 35 seconds. Old rig in about 60 seconds - so I've nearly trebled my rendering power smile.gif
  Forum: MRO 2005 · Post Preview: #146500 · Replies: 127 · Views: 250686

djellison
Posted on: Sep 21 2009, 09:37 PM


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QUOTE (dvandorn @ Sep 21 2009, 10:20 PM) *
If Doug's numbers are right, then it would seem that we're paying something like $16 million a year for the rather limited staffing and facilities required to operate the MERs. Apologies, but that doesn't sound realistic, either.


Take a trip to JPL. If you're lucky Scott or Paolo or someone can show you around. I've seen it, and Cornell as well. It's a lot of people, a lot LESS than it was, but still a lot of people, a lot of offices, a lot of stuff going on. Remember the rows of desks during the early MER ops, Steve and Justin with the images on two monitors - that whole room is still used, day in day out. There's multiple sequencing rooms, theres instrument teams, there's the ISIL. Multiple daily teleconfs between JPL, Cornell, and host institutions of other participating scientists and engineers. The not insignificant effort in PDS releases. Training, IT support, security, oh the damn security, PAO, the servers for the jpg's. Hell - they've spent more on sand, grit, dirt, clay etc than a small building firm.

If it were a business, I can very easily imagine an 8 digit annual turnover.

For comparison - Cassini's 2 years extension is $80m per year.
  Forum: Exploration Strategy · Post Preview: #146494 · Replies: 37 · Views: 44028

djellison
Posted on: Sep 21 2009, 09:16 PM


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It wasn't an especially considered or ambiguous statement you made toDoug, so forgive me for taking it at face value - ignoring the attack word - you still described the DSN as "the real funding-drain of any and all deep space missions".

My very rough estimation demonstrates, I hope, that this isn't true.

As for multi-spacecraft on one dish, it's called Multiple Spacecraft Per Aperture - it's all over google in various places. We mentioned it here in '06.

  Forum: Exploration Strategy · Post Preview: #146491 · Replies: 37 · Views: 44028

djellison
Posted on: Sep 21 2009, 09:07 PM


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Pah - 93kft. 100+ is where the fun starts smile.gif

Lots of teams now doing this. The Cambridge boys almost had a launch this w'end - but they needed a bit more dev time on their 2.0 avionics board.
  Forum: Private Missions · Post Preview: #146489 · Replies: 225 · Views: 228634

djellison
Posted on: Sep 21 2009, 07:56 PM


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QUOTE (mcaplinger @ Sep 21 2009, 07:27 PM) *
I'm a little bemused about why this is so offensive



QUOTE
It's getting to be time to attack the real funding-drain of any and all deep space missions -- the astronomical (pun intended) fees being charged for communicating with the spacecraft.


This statement is what has offended people. The statement that DSN time was 'astronomical' and should be 'attacked'. I would like to see some numbers to establish if indeed the charges are 'astronomical' before making such a bold statement. Wouldn't you? It's quite a bold claim.

If wanting some numbers and evidence before claiming something needs to be attacked for being astronomical means I'm a fanboy - then I am a fanboy.

Let's try and make an estimation. Looking at the MER Analyst notebook - you can see MER schedules. Sol 1798B, for example.


CODE
2009-02-13T11:09:16 - Sol_1798_AM_HGA
2009-02-13T11:38:17 - Sol_1798_new_master_blip
2009-02-13T11:50:16 - r1218_DRIVE_DRIVE_FOR_TIME_sol_1798_Drive


The HGA starts at 11:09 - and including beep, it must be finished by 11:50. The same pattern is on all sols I can found where uplink was done. Let's round up to an hour.

1hr DSN pass + 45min setup and 15min setdown (that's a req in the docs) is 2 hrs of DSN time. Twice a day. 4 hrs per day.

AF = $1057 * ( 1 * (0.9 + 14/10) ) =, I think, $2431 / hr.

So - I get about $3.55M / year.

I'm not even accounting for the fact that the DSN can now operate multiple spacecraft from one dish at the same time - thus the costs can be shared across multiple missions in some way. Furthermore, for some significant swathes of MER ops - they don't uplink daily - especially during very low power periods. But let's ignore that - and stick with the $3.55M / year.

If the figure I've heard of around $20M/year for MER ops is true - then about 17% of MER costs would be required for 1 x 1hr uplink, per rover, per day.

The costing of downlink is going to be far more complex as it's tied in to Odyssey DSN fees. When Dan and I were at the DSN - it was the 70m dish that was Mars pointed (which costs 4x as much ). BUT - a 15 min UHF pass might generate 30-60 mins of MODY downlink budget. So perhaps it's fair to basically double that $3.55M / year figure for the MER share of downlink as a ballpark estimation. That basically comes out to DSN being 1/3rd of the alleged MER budget at, what I would classify, a worst case rough estimation.

Now - is that astronomical - does it need attacking? I don't think so.

Hands up if you do.
  Forum: Exploration Strategy · Post Preview: #146479 · Replies: 37 · Views: 44028

djellison
Posted on: Sep 21 2009, 06:24 PM


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To be fair - the calculations for DSN time are from published documents from the DSN itself, not Wikipedia.
  Forum: Exploration Strategy · Post Preview: #146470 · Replies: 37 · Views: 44028

djellison
Posted on: Sep 21 2009, 04:18 PM


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QUOTE (tedstryk @ Sep 21 2009, 03:41 PM) *
Frankly, I find this to be a disrespectful and uninformed way to describe the folks who do the Herculean task of commanding the spacecrafts and recovering data from their faint signals.


That's exactly what I've been thinking as well.
  Forum: Exploration Strategy · Post Preview: #146457 · Replies: 37 · Views: 44028

djellison
Posted on: Sep 20 2009, 08:37 PM


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The majority of uplink is still done directly to the HGA from the DSN however.
  Forum: Exploration Strategy · Post Preview: #146431 · Replies: 37 · Views: 44028

djellison
Posted on: Sep 20 2009, 12:40 PM


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We've already covered that comment Phil. Spaceflightnow, as with all the media, are taking that statement (which is no less or more true today than the day she got stuck) and running with it. It's what all the media have done.
  Forum: Spirit · Post Preview: #146417 · Replies: 1068 · Views: 609987

djellison
Posted on: Sep 20 2009, 07:16 AM


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The star patttern isn't there for fun though, it's where the wheels were bolted down onto the lander deck for launch, cruise and landing.
  Forum: Opportunity · Post Preview: #146410 · Replies: 916 · Views: 424873

djellison
Posted on: Sep 19 2009, 05:58 PM


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QUOTE (dvandorn @ Sep 19 2009, 06:37 PM) *
Of course, just speaking of *extension* costs of running each rover past its 90-sol design lifetime,


We are.

If you REALLY want to do MER accounting - then good luck figuring out the DSN costs for MER based on MODY relay.
  Forum: Spirit · Post Preview: #146396 · Replies: 1068 · Views: 609987

djellison
Posted on: Sep 18 2009, 03:24 PM


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The only two things I could think of were the ESOC blogging team from recent flybys, and the VMC guys for turning it back on. In all of ESA, that's the only good outreach I could think of.
  Forum: Conferences and Broadcasts · Post Preview: #146360 · Replies: 34 · Views: 23848

djellison
Posted on: Sep 18 2009, 01:55 PM


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QUOTE (vikingmars @ Sep 18 2009, 02:53 PM) *
If Spirit becomes a static lander, we will have probably to fight more to save a budget for her daily operations in the coming years... :


They don't fund Spirit. They fund MER. As long as one rover is active, the project should be OK getting funding.
  Forum: Spirit · Post Preview: #146355 · Replies: 1068 · Views: 609987

djellison
Posted on: Sep 17 2009, 09:43 PM


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QUOTE (climber @ Sep 17 2009, 08:58 PM) *
Is there a place where I can se what I, I mean we sent?


Because I'm a total genius who basically FORGOT to send cards in time for Spirit's 3rd - so I rushed it and didn't take pictures before I sent them. They had big fluffy blue monsters on them smile.gif
  Forum: Opportunity · Post Preview: #146316 · Replies: 916 · Views: 424873

djellison
Posted on: Sep 17 2009, 02:54 PM


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Bingo. That's three. I'll be in touch after the w'end smile.gif
  Forum: Conferences and Broadcasts · Post Preview: #146296 · Replies: 34 · Views: 23848

djellison
Posted on: Sep 17 2009, 02:23 PM


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Actually - it needs me + 3 EU people.

That's two - need one more smile.gif
  Forum: Conferences and Broadcasts · Post Preview: #146292 · Replies: 34 · Views: 23848

djellison
Posted on: Sep 17 2009, 10:58 AM


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http://www.europlanet-eu.org/demo/index.ph...3&Itemid=41

I'm thinking that the ESOC MEX team for turning the VMC back on deserve a nomination. Anyone fellow Europeans want to come in on it and co-sign it?
  Forum: Conferences and Broadcasts · Post Preview: #146283 · Replies: 34 · Views: 23848

djellison
Posted on: Sep 17 2009, 06:46 AM


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QUOTE (Ron Hobbs @ Sep 16 2009, 11:09 PM) *
. Did anyone do a cake?


Nope - but UMSF, as ever, sent Birthday Cards to Cornell and JPL.
  Forum: Opportunity · Post Preview: #146278 · Replies: 916 · Views: 424873

djellison
Posted on: Sep 16 2009, 02:54 PM


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All these tracks remind me of the time up near Larrys Lookout where we did the U-Turn and ended up with three sets of near parallel tracks smile.gif
  Forum: Opportunity · Post Preview: #146217 · Replies: 916 · Views: 424873

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