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djellison
Posted on: Oct 25 2011, 09:27 PM


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QUOTE (Oersted @ Oct 25 2011, 01:40 PM) *
Surely the Multi-Mission Radioisotope Thermoelectric Generator is already in place?


It gets installed, thru the fairing and the backshell, once the rocket is on the launch pad.


  Forum: MSL · Post Preview: #179542 · Replies: 84 · Views: 94879

djellison
Posted on: Oct 21 2011, 02:57 AM


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QUOTE (JohnVV @ Oct 20 2011, 07:42 PM) *
I would not use paint shop
....
in vip's you can do it all from the terminal without the gui overhead
simple bash script would do .


And for those without a background in command line syntax and so on, what you describe lies a great big steep chasm of learning away from being possible.

For that vast majority of people, Paintshop Pro, Gimp or Photoshop is far, far more appropriate.

For those with the skills, what you describe may be ultimately faster - but for most, it's folly to suggest.

  Forum: Tech, General and Imagery · Post Preview: #179406 · Replies: 9 · Views: 14972

djellison
Posted on: Oct 20 2011, 02:29 PM


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QUOTE (Sunspot @ Oct 19 2011, 11:33 PM) *
The power must be really bad if they are thinking about parking already.


This statement really does baffle me.

Do you not remember the mad rush before Winter Haven 1 on the SE side of Home Plate or WH3 on it's Northern slope.

Is Troy really that long ago that you've just forgotten how we lost Spirit?

Or maybe you always let the fuel light on your car come on, drive another 50 miles and let the engine start spluttering before even thinking about a gas station.

I don't, and fortunately, neither do the MER folks.
  Forum: Opportunity · Post Preview: #179389 · Replies: 531 · Views: 334036

djellison
Posted on: Oct 19 2011, 12:20 AM


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They did that quite some time ago as well - checking how well the Navcam's can be used for sunfinding.

One result looked like this :
http://marsrovers.jpl.nasa.gov/gallery/all...GTP1926L0M1.JPG

another

http://marsrovers.jpl.nasa.gov/gallery/all...6AP1926L0M1.JPG



  Forum: Opportunity · Post Preview: #179350 · Replies: 531 · Views: 334036

djellison
Posted on: Oct 18 2011, 03:30 PM


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That's great news.
  Forum: Past and Future · Post Preview: #179339 · Replies: 664 · Views: 543146

djellison
Posted on: Oct 17 2011, 10:20 PM


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Thought has just occurred to me. I wonder if they plan to (or even can) operate the lander, after the ascent stage has left on the flight back to Earth?
  Forum: Past and Future · Post Preview: #179312 · Replies: 664 · Views: 543146

djellison
Posted on: Oct 12 2011, 12:17 AM


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Consider that a strawman placeholder for an Extended Extended mission. As of yet - no such mission has been approved/funded.
  Forum: Cometary and Asteroid Missions · Post Preview: #179192 · Replies: 378 · Views: 339596

djellison
Posted on: Oct 6 2011, 06:32 PM


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QUOTE (Airbag @ Oct 6 2011, 11:10 AM) *
I would hazard a guess that the ones pointing slightly more "outward" are the ones used at the end (to minimize the blast effects on any surface dust).


Exactly that - the proj. animation reflects that. What it doesn't show is the jolt the system gets transitioning from all 8 to just the final four in prep for the skycrane maneuver.

And, I think the mylar's coming off....probably just contamination control and esd protection.
  Forum: MSL · Post Preview: #179051 · Replies: 84 · Views: 94879

djellison
Posted on: Oct 6 2011, 12:41 AM


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QUOTE (Stu @ Oct 5 2011, 04:21 PM) *
and on NASA's own websites


Yeah, someone should do something about that.


ph34r.gif

  Forum: Cassini PDS · Post Preview: #179038 · Replies: 64 · Views: 89283

djellison
Posted on: Oct 5 2011, 06:59 PM


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Well - when submitting a person for the award - you have to cite one story. Make no mistake, this is for all of Emily's work..and is very very well deserved.
  Forum: Chit Chat · Post Preview: #179031 · Replies: 26 · Views: 15137

djellison
Posted on: Oct 2 2011, 04:21 PM


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From the Cornell Pancam team with multiple references:
http://pancam.astro.cornell.edu/pancam_ins...projects_1.html

That's as close to " how Nasa or JPL converts the Black and White images into true Color Images" as you will find.

This is more of a laypersons discussion of it:
http://www.highmars.org/niac/education/mer/


  Forum: Opportunity · Post Preview: #178942 · Replies: 201 · Views: 193874

djellison
Posted on: Oct 1 2011, 11:04 PM


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It's important to differentiate between color and colorized. That mosaic, Stu - is color. Taking a Navcam pan and tinting it orange would be colorized.

One creates something with more information than the component parts alone, the other, technically, reduces it. Yours - importantly - is the former.
  Forum: Opportunity · Post Preview: #178929 · Replies: 201 · Views: 193874

djellison
Posted on: Sep 30 2011, 10:36 PM


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QUOTE (jasedm @ Sep 30 2011, 03:07 PM) *
I assumed that 'oDoug' had had a disagreement with the mods re: forum rules and decided UMSF wasn't for him anymore.


To my knowledge, that didn't happen. From what I can tell, he simply stopped visiting all together towards the end of Sept '09. He did get the attention admins over a discussion about the DSN at the time, but was certainly not banned or told to leave, nor did he make any suggestion he was about to leave either.


People come, people go. It happens.




  Forum: Chit Chat · Post Preview: #178912 · Replies: 7 · Views: 6499

djellison
Posted on: Sep 24 2011, 01:33 PM


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QUOTE (Floyd @ Sep 24 2011, 03:45 AM) *
Really expected more from NASA; NASA_Watch; and other sites, but alas little real information has yet been released.


That's because little information exists. What do you want NASA to do - make stuff up?

They reported all the info they had as quickly as can be expected.
  Forum: Earth Observations · Post Preview: #178802 · Replies: 49 · Views: 69488

djellison
Posted on: Sep 20 2011, 03:30 PM


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All that different to earlier grindings?

http://marsrovers.jpl.nasa.gov/gallery/pre...1-B041R1_br.jpg
  Forum: Opportunity · Post Preview: #178690 · Replies: 201 · Views: 193874

djellison
Posted on: Sep 19 2011, 05:49 PM


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QUOTE (Bill Harris @ Sep 19 2011, 02:38 AM) *
That is what I initially thought but decided that the surface looked "too glassy" to be deeply weathered. I imagine that the actual criteria for hardness of the rock would be Oppy's RAT engineering telemetry, such as the current draw or the grind time of the operation, and not amount of cuttings.

--Bill



They have indeed done just that - infer hardness based on RAT performance. If you remember back in the early days - a berry was picked up mid-grind as a spike, and later caused the RAT to stall.
  Forum: Opportunity · Post Preview: #178673 · Replies: 201 · Views: 193874

djellison
Posted on: Sep 19 2011, 06:30 AM


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QUOTE (stevesliva @ Sep 18 2011, 10:23 PM) *
Or dust. Depends on how you see it. They do gamely keep checking it.


Check the documentation for the MER Analysts Notebook.

For example - Sol 2261-2267 MER B Downlink Report
QUOTE
Opportunity is healthy and all* subsystems are nominal as of the Sol 2267 UHF downlink. Energy is currently 296 Whr with Tau at 0.370 and a dust factor of 0.5820 as of Sol 2267.

*except the Mini-Thermal Emission Spectrometer (MTES) which has experienced a failure. Investigations into the Mini-TES failure are ongoing.


or
Sol 2281-2287 MER B Downlink Report
QUOTE
[Mini-TES, the miniature Thermal Emission Spectrometer experienced an anomaly on Sol 2257 which is currently being investigated.]


later, you will just find

QUOTE
*with the exception of a known problem with Mini-TES as of the Sol 2308 downlink.



Or from the excellent : http://www.planetary.org/news/2011/0901_Ma...ver_Update.html

QUOTE
Last Sunday, the rover's Sol 2700, the team decided to have the rover conduct another set of diagnostics on the miniature thermal emission spectrometer (Mini-TES) that began acting up last year and hasn't been working since. "We’re all about trying to exhaust even remotely likely possibilities," noted Nelson. Opportunity followed her commands to exercise the back-up laser and back-up optical switch.



Or going back further in time
http://www.planetary.org/news/2011/0430_Ma...ate_Spirit.html

QUOTE
Last year, after being turned on, the Mini-TES failed to conduct a transferring kind of "handshake" with the PMA. "It timed out, and then said it wasn't talking to the flight software, and it was also not properly commanding the motors that would have changed the PMA azimuth, and we got a PMA fault," Nelson recounted. The ensuing diagnostics indicated the PMA azimuth motor is fine, and the issue is likely between the Mini-TES and the motor control board.

This month, the Mini-TES exhibited more anomalous behavior. Specifically, it failed to draw power. A functioning Mini-TES should draw 200-250 milliamperes up to about ¼ amp, according to Nelson. "We're not seeing that current draw," he said.

That would seem to suggest that the Mini-TES is simply not turning on, or that something somewhere between the instrument and motor control board has failed. Although the instrument investigation is continuing, the Mini-TES remains, Nelson said, "effectively out of commission."


It is, as I said.... bust.
  Forum: Opportunity · Post Preview: #178657 · Replies: 201 · Views: 193874

djellison
Posted on: Sep 19 2011, 02:45 AM


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Pancam - Fine, and less dusty than it has been
MiniTES - Bust

IDD - Azimuth joint bust - can position instrument along a vertical plane, not full 3D space.
APXS - Fine
MI - Fine
RAT - Fine ( but obviously, teeth are consumed to near death )
Mossbauer - VERY VERY tired. We're > 10 half-lives into it - so integrations that would have taken 6 hrs could technically take > 6 months. A good integration now would involved several weeks.




  Forum: Opportunity · Post Preview: #178651 · Replies: 201 · Views: 193874

djellison
Posted on: Sep 16 2011, 03:11 PM


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Remember - the MI could be oriented different way depending on where the IDD is placed. This isn't a post-production issue, so to speak.
  Forum: Opportunity · Post Preview: #178595 · Replies: 201 · Views: 193874

djellison
Posted on: Sep 15 2011, 09:59 PM


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How many times do I have to clean up this thread because of rule 1.2?
  Forum: Telescopic Observations · Post Preview: #178575 · Replies: 297 · Views: 418891

djellison
Posted on: Sep 15 2011, 07:41 PM


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That's the normal Sept 2011 release that should include data from March/April/May/June
  Forum: LRO & LCROSS · Post Preview: #178569 · Replies: 509 · Views: 554973

djellison
Posted on: Sep 15 2011, 06:27 PM


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Have you tried sending them a friendly email rather than post an angry face here?
  Forum: Dawn · Post Preview: #178562 · Replies: 125 · Views: 159252

djellison
Posted on: Sep 14 2011, 05:27 PM


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No - it'll be in the update after that.
  Forum: LRO & LCROSS · Post Preview: #178539 · Replies: 509 · Views: 554973

djellison
Posted on: Sep 13 2011, 11:38 PM


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A reminder about rule 1.3 - a rule this thread is rapidly approaching and likely to start leaping towards in the near future. (which is why it's been a pending admin nightmare for years)
  Forum: Telescopic Observations · Post Preview: #178524 · Replies: 1264 · Views: 731478

djellison
Posted on: Sep 13 2011, 09:38 PM


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Can we save the meaningless semantic argument for another forum please.
  Forum: Telescopic Observations · Post Preview: #178518 · Replies: 1264 · Views: 731478

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