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djellison
Posted on: Oct 28 2005, 08:49 AM


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I cheat, and just use http://maps.google.com

smile.gif

Home
http://maps.google.com/maps?ll=52.601171,-...52967&t=k&hl=en


Local airport
http://maps.google.com/maps?ll=52.826320,-...09560&t=k&hl=en

Where we're going for Holiday in a fortnight...
http://maps.google.com/maps?ll=36.744662,-...05935&t=k&hl=en




Doug
  Forum: Earth Observations · Post Preview: #24734 · Replies: 36 · Views: 45313

djellison
Posted on: Oct 27 2005, 07:34 PM


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I must admit - doing mosaics with a combo of PTGui and Photoshop is a lot easier now Photoshop has the warp tool, very powerfull and usefull

Doug
  Forum: Cassini PDS · Post Preview: #24695 · Replies: 172 · Views: 193991

djellison
Posted on: Oct 27 2005, 03:32 PM


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Nooooo - that's a Phil-O-Sphere - Phil-O-Vision is vertical stretching smile.gif

Doug
  Forum: Image Processing Techniques · Post Preview: #24654 · Replies: 555 · Views: 309904

djellison
Posted on: Oct 27 2005, 03:00 PM


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http://www.space.t.u-tokyo.ac.jp/cubesat/index-e.html has a few

to be honest, they're terrible, but it's the thought that counts smile.gif

Take enough of them...

  Forum: Private Missions · Post Preview: #24650 · Replies: 78 · Views: 243769

djellison
Posted on: Oct 27 2005, 01:40 PM


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As I understand it - XI-V is one of the development models for XI-IV (which emailed me lovely earth pics every now and again biggrin.gif ) - but with a better, 320x240 camera.

Of the three - UWE has been detected fine, NCube2 may have had a beacon signal detected, no news from XI-V yet.

Strangely, NCube 1 was a failure, but they've taken it's engineering model camera and adapted it for SSETI itself - 1280x1024 images with approx 100m/pixel resolution.

Doug
  Forum: Private Missions · Post Preview: #24642 · Replies: 78 · Views: 243769

djellison
Posted on: Oct 27 2005, 10:31 AM


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L1 is usually used for an albedo type observation in conjunction with an orbiter...i.e. it looks this bright HERE, and that bright from up THERE, so we can interpolate actual surface brightness across more of the planet.

But damn - it looks like it's out of focus doesnt it? I hate L1 smile.gif

Doug
  Forum: Opportunity · Post Preview: #24631 · Replies: 690 · Views: 512126

djellison
Posted on: Oct 27 2005, 08:55 AM


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QUOTE (Rakhir @ Oct 27 2005, 08:04 AM)


And with it - three new cubesats smile.gif

Doug
  Forum: Private Missions · Post Preview: #24626 · Replies: 78 · Views: 243769

djellison
Posted on: Oct 25 2005, 08:49 PM


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QUOTE (ljk4-1 @ Oct 25 2005, 06:11 PM)
Hundreds of years from now (or longer), our descendants will have an incomplete picture of us,


I disagree. smile.gif

Yes - we have a very poor understanding of anything other than recent history, but because the means to record, archive and document things that happened did not exist in the way it does today.

Doug
  Forum: Cometary and Asteroid Missions · Post Preview: #24496 · Replies: 26 · Views: 27552

djellison
Posted on: Oct 25 2005, 02:39 PM


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QUOTE (ljk4-1 @ Oct 25 2005, 02:05 PM)
While I do not have monetary figures for the Voyager Records, I can tell you that a lot of the work was on a voluntary basis from Sagan and his team, using local resources.

If the signatures will be on a chip on Dawn, then good, that means there is room for another medium to carry information of substance.
*



For what purpose? It'll just be sat in the inner solar system, probably end up getting crashed onto an asteroid as an extended mission. If the ability ever exists to find and retrieve it, then we'll have no need for the information. smile.gif

PS - you can be the one to take a few tens of grammes of RCS prop. out to carry the mass of your info-store at the expense of a few extra days of extended operations wink.gif

As a Plan.Soc. member, yes, I'd support spending money for the adition of information to misisons leaving the solar system, but I would rather not see money wasted in doing similar exercises for inner solar system missions.

Doug
  Forum: Cometary and Asteroid Missions · Post Preview: #24436 · Replies: 26 · Views: 27552

djellison
Posted on: Oct 25 2005, 08:54 AM


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Ahh - I think what happened was that he uploaded an image with one post, but didnt put any content in it - and I accidentally deleted that post as it said something along the lines of duplicate or delete or something on it.

T - you might want to re-attach the attachment to another post.

Doug
  Forum: Spirit · Post Preview: #24405 · Replies: 663 · Views: 767566

djellison
Posted on: Oct 24 2005, 03:46 PM


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Eeek - not sure I like where this thread will end up going, but let's see what happens. Play nice boys smile.gif

Doug
  Forum: Voyager and Pioneer · Post Preview: #24323 · Replies: 186 · Views: 176838

djellison
Posted on: Oct 24 2005, 02:42 PM


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Well - MEX can do about 6 - 12m res in colour, but the suposed 1.5m res super resolution channel is really really crappy, and can actually get about half of that.

Given MEX's orbit and it's visiting of any one site on mars less regularly than MGS, and it's resolution to MGS, MGS is by far the better spacecraft to do this sort of thing.

Doug
  Forum: Opportunity · Post Preview: #24306 · Replies: 15 · Views: 18596

djellison
Posted on: Oct 23 2005, 03:28 PM


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QUOTE (Bill Harris @ Oct 22 2005, 03:18 AM)
This is the first tricolor image in a while.  It is an L257 of image 1P183045612EFF6300P2401L2M .  The Payson outcrop at the Mogollon Rim is centered near the horizon.

--Bill
*


Here it is with its next door frame, not a lot of colour imaging being done, but then I'd rather they just did imaging dedicated to good driving. 40m+ is great in these conditions. -
http://www.unmannedspaceflight.com/doug_images/erebus_3.jpg

Doug
  Forum: Opportunity · Post Preview: #24255 · Replies: 690 · Views: 512126

djellison
Posted on: Oct 22 2005, 08:29 PM


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The dynmaics of something as complex as the cruise stage entering the martian atmosphere is almost un-calculatable.

And iirc, there was a distance of several tens of km's between the cruise stage and the entry shell before entry.

Doug
  Forum: Opportunity · Post Preview: #24236 · Replies: 263 · Views: 173605

djellison
Posted on: Oct 21 2005, 09:04 AM


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They're the pancam and navcam electronics boxes. They contain circuitry for the cameras. There's one for each of the four Hazcams as well, and the MI ( it's on the end of the IDD, we saw a cool picture taken by a Hazcam, of itself, reflected in the MI's electronics box once) and the DC (it's on the empty lander)

You can see the two Navcam ones in the middle there ( one is 'upsidedown' compared to the other ) and the Pancam ones are at 90 degrees to them, tucked in at each end.

Lots of pictures like this one...


Here ->
http://marswatch.astro.cornell.edu/pancam_...ng_testing.html

Doug
  Forum: Tech, General and Imagery · Post Preview: #24112 · Replies: 5 · Views: 6758

djellison
Posted on: Oct 20 2005, 08:00 PM


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QUOTE (Edward Schmitz @ Oct 20 2005, 03:00 PM)
Probably up range.  And probably not much of it.  The entry vehicle is is much more massive and aerodynamic.  Those small pieces would not make it this far.  They are much more likely to melt and have a higher drag/mass ratio.
*


We dont know that smile.gif

If they went up range, then how could they not make it this far.

I'm just suggesting it as a possibility - there's possible other reasons, obviously. I thikn they warrant some closer inspection.

Doug
  Forum: Opportunity · Post Preview: #24060 · Replies: 263 · Views: 173605

djellison
Posted on: Oct 20 2005, 07:32 AM


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QUOTE (mchan @ Oct 20 2005, 03:32 AM)
But then Sagan wasn't around to press the case.  sad.gif
*


And neither is the cash - this isnt a BIG budget mission.

I appreciated the motive, but to be honest, there's little point in putting something on NH as no one's going to see it again. There's no point putting something on a solar system spacecraft because if someone does see it again, they've come from this planet to see it.

And it may seem like a fickle, quick, easy thing to impliment, but you would not BELIEVE how much it would cost to flight qualify and buid something to bolt on there.

Doug
  Forum: Cometary and Asteroid Missions · Post Preview: #23994 · Replies: 26 · Views: 27552

djellison
Posted on: Oct 20 2005, 07:30 AM


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QUOTE (Edward Schmitz @ Oct 20 2005, 12:22 AM)
The distribution pattern is not consistant with any of the hardware impacts.
*


So where did the cruise stage remains impact then smile.gif

Doug
  Forum: Opportunity · Post Preview: #23993 · Replies: 263 · Views: 173605

djellison
Posted on: Oct 19 2005, 04:12 PM


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QUOTE (ljk4-1 @ Oct 19 2005, 04:01 PM)
This is why I say that for a relatively minimum amount of effort, important historical data should be placed on deep space probes *in addition* to the cutesy and promotional signatures and inane messages. 


Consider the 4 big budget genuinely deep space missions ( Voyager 1, 2 and Pioneer 10 and 11 ) - they have included imporant data.

But a mission constrained to the solar system, well, it's pointless.

Doug
  Forum: Cometary and Asteroid Missions · Post Preview: #23938 · Replies: 26 · Views: 27552

djellison
Posted on: Oct 19 2005, 02:53 PM


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Ahh - THAT'S Haskin ridge, I thought it was something way down the East spur.

See your point now - that'll be fun smile.gif

Doug
  Forum: Spirit · Post Preview: #23931 · Replies: 378 · Views: 255390

djellison
Posted on: Oct 18 2005, 11:29 PM


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Another drive...

Before
http://qt.exploratorium.edu/mars/spirit/na...00P0635L0M1.JPG

after
http://qt.exploratorium.edu/mars/spirit/na...00P0655L0M1.JPG

You might be able to spot a small black triagular rock in both shots that demonstrates the progress, probably the same as the last one I'd have thought. Good driving terretory all the way out here - I could imagine some really big drives soon - 50+

Doug
  Forum: Spirit · Post Preview: #23885 · Replies: 378 · Views: 255390

djellison
Posted on: Oct 18 2005, 10:56 PM


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I cant imagine enough convection on mars to keep a raindrop elevated long enough for a good sized hailstone to form.

It beats me though - one would have thought that the dunes are active and that something like this wouldnt last long.

Are we seing the results of the cruise-stage entering behind the spacecraft? Small components making into the surface and bouncing out, and the resultant crater being 'softened' over 600 sols by wind?

Doug
  Forum: Opportunity · Post Preview: #23884 · Replies: 263 · Views: 173605

djellison
Posted on: Oct 18 2005, 03:18 PM


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There are smaller, similar-from-MOC-images patches seen on the south slopes to the north of Husband hill - just depressions that collect the stuff, just like Bonneville has.

Doug
  Forum: Spirit · Post Preview: #23853 · Replies: 378 · Views: 255390

djellison
Posted on: Oct 18 2005, 02:54 PM


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I tink 900 sols and 6000 m would be a major milestone - that would be exceeding the two main mission requirements by an order of magnitude smile.gif

Doug
  Forum: Spirit · Post Preview: #23848 · Replies: 378 · Views: 255390

djellison
Posted on: Oct 17 2005, 07:19 PM


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It's in this forum somewhere - the search tool will probably help. I dont think the exact algos have been diulged, but they were improved upon.

Doug
  Forum: Cassini's ongoing mission and raw images · Post Preview: #23779 · Replies: 91 · Views: 100698

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