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djellison
Posted on: Sep 6 2006, 07:55 AM


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QUOTE (climber @ Aug 29 2006, 05:49 PM) *
Didn't the first cleaning event still occur before Spirit reached the Columbia hills


I don't recall any cleaning events before the area around Larrys Lookout.

Doug
  Forum: Spirit · Post Preview: #66905 · Replies: 603 · Views: 379892

djellison
Posted on: Sep 5 2006, 07:55 PM


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A lot of drives end with a turn in place just to orient as best as possible for the UHF passes that follow.

Doug
  Forum: Opportunity · Post Preview: #66837 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 5 2006, 07:54 PM


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Well - I had a look around the house for the perfect metal disc, etching CNC tooling and gold plating bath but I can't find them...maybe I put them in the loft but hey smile.gif

If it helps - yes - I put an old IDE DVD Rom drive in there smile.gif

Doug
  Forum: Chit Chat · Post Preview: #66836 · Replies: 30 · Views: 26369

djellison
Posted on: Sep 5 2006, 07:21 PM


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disclaimer : I was born in Chester, a few miles from Jodrell Bank

I voted for this - the other's on offer were all well and good - but JB is an astonishing place - bigger even than the large DSN assets smile.gif

Doug
  Forum: Telescopic Observations · Post Preview: #66827 · Replies: 5 · Views: 6163

djellison
Posted on: Sep 5 2006, 03:59 PM


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Well - I'll still ask the same question - why do the images look fuzzy because of a 'stretch' process?

Doug
  Forum: Lunar Exploration · Post Preview: #66799 · Replies: 127 · Views: 268216

djellison
Posted on: Sep 5 2006, 03:48 PM


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QUOTE (RNeuhaus @ Sep 5 2006, 04:44 PM) *
due to the scratch process


Scratch process?

Doug
  Forum: Lunar Exploration · Post Preview: #66793 · Replies: 127 · Views: 268216

djellison
Posted on: Sep 5 2006, 03:07 PM


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If Phil thinks the Moon is greyscale - it means his publisher saves a fortune on printing costs wink.gif

Seriously - yes - there are some very subtle colours on the moon - but not so much as one would notice with the naked eye really.

Doug
  Forum: LRO & LCROSS · Post Preview: #66785 · Replies: 175 · Views: 266791

djellison
Posted on: Sep 5 2006, 02:48 PM


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QUOTE (RNeuhaus @ Sep 5 2006, 03:43 PM) *
The Epsilon crater, on the rightmost of the picture has a perfect circle. This has lead me to think that the surface was somewhat semi-liquid when a rocky stone fell on that.


Why? Look at all the perfectly circular craters on the moon....no semi-liquid state there smile.gif

Doug
  Forum: Opportunity · Post Preview: #66782 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 5 2006, 02:47 PM


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Stationary Lander @ Meridiani - one of the first questions I asked SS last autumn smile.gif

Doug
  Forum: Past and Future · Post Preview: #66781 · Replies: 114 · Views: 114599

djellison
Posted on: Sep 5 2006, 02:31 PM


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The problem with one large "catch all" forum is that we have some very varied topics that do not overlap that much.

For instance - people reading up on Cassini do not want to have the Opportunity route-map thread in the way, or people following New Horizons do not want to scroll through the threads of STEREO etc etc.

Getting it right is not easy - but I much much prefer this way to having them all in one bucket. I think it's probably just a matter of getting used to things. The forum I frequented the most before this one had over 400 sub forums within it...some of which I never visited because the content didn't interest me and as a result it saves me a lot of time when i go there. The majority of sites I've visited do seperate content up into sub forums and I try to resist the creation of a new subforum where possible ( i.e. recently people wanted a new thread of extra solar planets, and I simply gave extra solar planets a home within an existing forum )

Paxdan is right - the "view new post" button is great and essentially does what you want - makes a large virtual forum with all the new content in it.

Thanks for the comments - and I'll certainly pop into the Eastern US WX BB just to see how things feel when clumped together.

Doug
  Forum: Chit Chat · Post Preview: #66777 · Replies: 14 · Views: 11440

djellison
Posted on: Sep 5 2006, 02:08 PM


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Top of the list in priority to be returned, but not the first image taken smile.gif

Doug
  Forum: Tech, General and Imagery · Post Preview: #66773 · Replies: 18 · Views: 19715

djellison
Posted on: Sep 5 2006, 11:35 AM


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Well - for that we'd need to know the height of the far rim w.r.t. the near rim

It'll work the other way around - once we see the far rim we'll know, from the distance to the near rim and height of the pancam mast - the height of the far rim :0

Doug
  Forum: Opportunity · Post Preview: #66759 · Replies: 409 · Views: 219246

djellison
Posted on: Sep 5 2006, 10:14 AM


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Here's my take... everything blue is beyond Victoria crater, everything red is bits of Victoria we can see.

Doug
  Forum: Opportunity · Post Preview: #66749 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 5 2006, 08:53 AM


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Tosol will be untargetted remote sensing only - yesterday was Labour day in the US, and that drive was the last sol of what was probably a 3 or 4 sol plan over the weekend.

What they WILL do today is take the rest of the navcam 360 from this position (5 pointings centred on 324 degrees ) and quite a lot of atmospheric pancam observations.

I'm not sure if they'll make the decision to drive on from Epsi..whatever it's called from just the Navcam imagery - they may do some targetted remote sensing tomorrow and then drive on, or some targetted remote sensing follow by approach drives for in-situ work. I think we'll have a better idea tomorosol (930)

Doug
  Forum: Opportunity · Post Preview: #66743 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 5 2006, 07:21 AM


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The party only really started after I went to bed smile.gif

Doug
  Forum: Opportunity · Post Preview: #66728 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 5 2006, 07:10 AM


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I think you're right - because we're just not seing the sort of outcropping or features on the far rim that we should from here if the crater were 'flat' from side to side. I think it might be at quite a slope and thus we're seing some near rim, a tiny bit of far rim, and then the annulus beyond and etched terrain beyond that.

Doug
  Forum: Opportunity · Post Preview: #66725 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 5 2006, 06:55 AM


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LMA - Lockheed Martin Aeronautics
Doug
  Forum: MRO 2005 · Post Preview: #66721 · Replies: 95 · Views: 95904

djellison
Posted on: Sep 4 2006, 10:26 PM


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I think the sort of words they would use are instrument power up, check out and calibration.

Doug
  Forum: MRO 2005 · Post Preview: #66672 · Replies: 95 · Views: 95904

djellison
Posted on: Sep 4 2006, 10:19 PM


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QUOTE (Jim from NSF.com @ Sep 4 2006, 11:16 PM) *
All the appendages of MRO were deployed right after launch


SHARAD has to be deployed and CRISM has a cover to be ejected.

Doug
  Forum: MRO 2005 · Post Preview: #66670 · Replies: 95 · Views: 95904

djellison
Posted on: Sep 4 2006, 10:17 PM


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I can't imagine it being anything else - near as makes no difference we've covered 100m which would put us a few metres from Epsil...whatever it's called smile.gif

I'd expect some Nav's and perhaps some of the drive dir Pancams in about 7 minutes time ( 2235UT ...ish... ctrl-refresh, ctrl refresh.....maybe at 2335 then... images normally come up at specific minutes past the hour - so if a few are done at X:35...the next lot will be x+1:35 ish.)

OK - a few mintues late - but here come the navcams...

Epsilon...
http://qt.exploratorium.edu/mars/opportuni...23P0685L0M1.JPG

Victoria...
http://qt.exploratorium.edu/mars/opportuni...23P0685L0M1.JPG

Doug
  Forum: Opportunity · Post Preview: #66669 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 4 2006, 10:10 PM


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The images have been on the ground for less than an hour....give us a chance ohmy.gif

The record drive was 220m just south of Vostok crater - typical drives back then ( with quite a bit more power than we have now ) were 100m or so.

However - I make this drive 98 metres.

Doug
  Forum: Opportunity · Post Preview: #66666 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 4 2006, 07:41 PM


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'post bump' would suggest a short backup - followed by imaging of the scuff area - and THEN followed by a larger drive. A 'bump' drive wouldn't be long enough to warrent 'penultimate' Hazcam imagery on its own.

Also - if we were only having a bump drive, it's unlikely we'd have Drive Direction imagery when we already HAVE drive direction imagery from this spot.

Don't quote me....but I think we'll see quite a good drive distance. 70m is the dougcasted drive distance.

Doug
  Forum: Opportunity · Post Preview: #66652 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 4 2006, 04:08 PM


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Every time I try and think of when uplink and downlink are w.r.t. EDT and PDT, and I think I know when restricted sols is going to be - I get it wrong....not sure why...

I agree though - Epsilon as this coming weekend's science stop, it makes sense to see if it's anything different to what we've seen before.

Doug
  Forum: Opportunity · Post Preview: #66636 · Replies: 702 · Views: 371529

djellison
Posted on: Sep 4 2006, 03:20 PM


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No no - there ARE no blowers on the rovers - that's the point smile.gif

What you point out are the pyrotechnic bolts that held the solar arrays together before the thing deployed on Sol 1 smile.gif

Doug
  Forum: Tech, General and Imagery · Post Preview: #66631 · Replies: 18 · Views: 19715

djellison
Posted on: Sep 4 2006, 01:40 PM


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You do know about google don't you. laugh.gif
http://en.wikipedia.org/wiki/Viking_program

Viking 1 Lander 20 July 1976 till 11 November 1982 for a total of 6 years, 3 months, 22 days

Viking 2 Lander 3 September 1976 till 11 April 1980 for a total of 3 years, 7 months, 8 days
  Forum: Past and Future · Post Preview: #66621 · Replies: 114 · Views: 114599

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